
Video lessons
74 published lessons — choose a poster to watch, with no autoplay.
Video lessons
74 published lessons available.


Action Reverse
Like two if-bets running forward AND backward at once — spreads your risk across both orders.
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American Odds
−150 means risk $150 to win $100. +130 means risk $100 to win $130.
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Arbitrage / Arb
Finding two books with different odds where you can bet both sides and always win. Rare!
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ATS (Against The Spread)
How often a team covers the spread. "Chiefs are 8-4 ATS this season."
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Backdoor Cover
Game's basically over but a late touchdown makes the underdog cover. Painful!
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Bad Beat
The most painful losses. You should have won but something crazy happened.
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Book / Sportsbook
The place where you make your bets - like DraftKings, FanDuel, or a casino.
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Buying Points
Pay more to get a better number. Move Chiefs -7 to Chiefs -6 by paying extra vig.
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Chasing
Betting more because you're losing. BAD IDEA! This is how bankrolls disappear.
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CLV (Closing Line Value)
If you bet Chiefs −6 and it closes −7, you beat the closer by a point. That is CLV.
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Cooler
A person whose presence brings bad luck. Similar to a mush — when a cooler shows up, the winning stops.
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Expected Value (EV)
Math that estimates whether a price is good or bad long-term — not a promise that today's bet wins.
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If Bet
A conditional bet: if the first bet wins, the winnings automatically go on the next one.
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Implied Probability
What percent chance the price says this side has. −110 ≈ 52.4%; +150 ≈ 40%.
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Key Numbers
In football, games often end with a 3 or 7 point difference (field goals and touchdowns).
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Line Movement
The line "moved" from Chiefs -7 to Chiefs -7.5 because of betting action.
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Line Shopping
Like price comparing before buying. Different books have different odds!
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Middle
The dream! Bet one side at one number, bet the other side when the line moves, and win BOTH.
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No-Vig Fair Value
What the odds might look like if the book took no cut — a fair coin-flip split of the market's prices.
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Opening Line
The starting point - odds when they first come out, often days before the game.
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Parlay
A single bet that links two or more picks together. All legs must hit to win. Higher risk, bigger payout.
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Parlay Combinations
How many different parlays your teams can make. Round robins are built from these combinations.
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Pick'em / Pick
No favorite! Just pick the winner. Usually shown as PK or PICK.
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Public Money
What casual fans are betting. Sharps sometimes bet against the public.
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RLM (Reverse Line Movement)
70% on Team A but the line moves toward Team B? Sharp money on B!
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ROI (Return on Investment)
How much profit you make compared to how much you bet. Sustained positive ROI is rare and hard-earned.
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Round Robin
Pick 3 or more teams and the book builds all the smaller parlays for you — one loss doesn't sink everything.
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Same Game Parlay
A parlay where all legs are from the same game. Also called SGP.
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Stale Line
When a sportsbook is slow to update a number, the price you see may be stale. It can still move or be rejected before your bet is accepted — a stale line is not guaranteed value and not a command to bet.
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Teaser
A parlay where you get extra points on every leg in exchange for lower payout.
Read the written lessonTeaser Points
The head start you buy on every leg of a teaser — bigger head start, smaller payout.
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Tout
People selling "winning picks." Be VERY careful - most are not profitable.
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Trap Game
When a good team might not take a bad team seriously and lose or not cover.
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Vig
Short for vigorish. The book's cut on every bet. In loving memory of Vigtoria "Vig" the Goody Girl — a beloved English Bulldog who carried the name with grace.
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Moneyline
beginnerYou're just picking who wins the game. That's it! Like choosing which team you think is better.
Full Explanation
A moneyline bet is the simplest type of bet. You pick which team will win. No point spreads, no complications.
💡 Example
Chiefs are -150, Bills are +130. If you bet $150 on Chiefs and they win, you get $100 profit. Bet $100 on Bills and win, you get $130 profit.
See It In Action
Chiefs vs Bills
Chiefs win 27-24
Chiefs bettors win, Bills bettors lose
Pro Tips
- →Negative numbers = favorite (bet more to win less)
- →Positive numbers = underdog (bet less to win more)
- →Great for games where you have a strong opinion on the winner
Related terms
Point Spread (ATS)
beginnerThe favorite has to win by MORE than a certain number. It's like giving the underdog a head start!
Full Explanation
Point spread betting evens out the competition. The favorite must win by more than the spread; the underdog can lose by less than the spread OR win outright. If the margin lands exactly on the number, it's called a PUSH - nobody wins, nobody loses, and you get your money back.
💡 Example
Chiefs -7 vs Bills +7. Chiefs win by 8+? Chiefs cover. Chiefs win by 6 or less? Bills cover. Chiefs win by EXACTLY 7? That's a PUSH - bets are refunded.
See It In Action
Chiefs -7 vs Bills +7
Chiefs win 28-21 (by exactly 7)
PUSH! Both sides get their money back.
Pro Tips
- →ATS = Against The Spread
- →Key numbers: 3 and 7 are most common margins in football
- →Half-point spreads (like -7.5) eliminate pushes - someone always wins
- →A push on a parlay removes that leg (3-team becomes 2-team)
Related terms
Totals (Over/Under)
beginnerYou're guessing if both teams together will score MORE or LESS than a certain number. Like guessing how many cookies are in a jar!
Full Explanation
Bet on whether the combined final score will be over or under a set number. You're not picking a winner - just whether it's a high-scoring or low-scoring game.
💡 Example
Chiefs vs Bills, Total: 48.5. Combined score of 52? OVER wins. Combined score of 45? UNDER wins.
See It In Action
Total set at 48.5
Final: Chiefs 31, Bills 24 = 55 total
OVER wins!
Pro Tips
- →Weather can influence totals (wind/rain may suppress scoring — severity and market pricing matter)
- →Consider both offenses AND defenses
- →Overtime counts toward the total
Related terms
First Half Bets
intermediateSame bets as regular ones, but only the first half counts! After halftime, your bet is done.
Full Explanation
These work exactly like regular spreads, totals, and moneylines - but they only apply to the first half of the game.
💡 Example
Chiefs 1H -3.5 means they need to be winning by 4+ at halftime. 1H Over 24 means both teams need 25+ combined points by halftime.
See It In Action
1H Over 24
Halftime: Chiefs 17, Bills 10 = 27
OVER wins! (Second half doesn't matter)
Pro Tips
- →Good for teams that start fast or slow
- →Weather impact is less predictable for first halves
- →Study teams' first-half tendencies
Second Half Bets
intermediateBets that only count what happens AFTER halftime. Like a whole new game starting!
Full Explanation
These bets are graded only on what happens in the second half (and overtime if applicable). First half score doesn't count.
💡 Example
2H Chiefs -2 means the Chiefs need to outscore the Bills by 3+ in the second half alone.
Pro Tips
- →Lines often come out during halftime
- →Consider fatigue and coaching adjustments
- →Great if you're watching the game unfold
Parlay
intermediateA parlay is like stringing Christmas lights together. If ONE light breaks, they ALL go out. But if they all work? Extra bright! More bets = more risk = more reward.
Full Explanation
A parlay combines multiple bets into one. ALL selections must win for the parlay to pay out. The payout is higher because the risk is higher.
💡 Example
3-team parlay: Chiefs -7, Bills/Dolphins Over 48, Ravens ML. All 3 must hit. $100 could pay $600+.
See It In Action
3-team parlay at +600
2 legs win, 1 loses
Entire parlay loses. No partial payout.
Pro Tips
- →Higher payouts but lower probability
- →A push (tie) usually reduces the parlay to fewer legs
- →Correlated parlays (related outcomes) often restricted
Related terms
Teaser
intermediateIt's like a parlay with training wheels! You get extra points on every pick, but the payout is less. Makes it easier to win, but you don't win as much.
Round Robin
advancedInstead of one big parlay where everything must win, you make a bunch of smaller parlays from your picks. Some can lose and you can still win something!
Full Explanation
A round robin creates multiple parlay combinations from your selections. Pick 4 teams? You could make six 2-team parlays, four 3-team parlays, and one 4-team parlay.
💡 Example
Round robin with A, B, C, D creates: AB, AC, AD, BC, BD, CD (six 2-teamers). If 3 of 4 hit, you still win some parlays!
Pro Tips
- →Costs more upfront (multiple bets)
- →Provides a safety net compared to straight parlays
- →Good for when you like several picks equally
If Bet
advancedIF your first bet wins, THEN your second bet automatically happens. Like saying 'if I finish my dinner, I get dessert.'
Full Explanation
An if bet places wagers sequentially. If the first bet wins, a predetermined amount goes to the next bet. If the first bet loses, the chain stops.
💡 Example
If-bet: $100 on Chiefs -7, then $100 on Bills ML. Chiefs lose? Only out $100. Chiefs win? Bills bet is automatically placed.
Pro Tips
- →Order matters - put your most confident pick first
- →Limits your exposure compared to parlays
- →Winnings from bet 1 can fund bet 2
Action Reverse
advancedTwo if-bets going in opposite directions. It's like having a backup plan for your backup plan!
Full Explanation
An action reverse (or reverse bet) is essentially two if-bets - one starting with selection A, one starting with selection B. Provides action on both regardless of which wins first.
💡 Example
Reverse on Chiefs and Bills: If Chiefs wins → Bills bet activates. If Bills wins → Chiefs bet activates. You get action both ways.
Pro Tips
- →More expensive than a single if-bet
- →Guarantees you get multiple bets in play
- →Best when you strongly like both selections
Related terms
Prop Bets
intermediateBetting on the little things that happen IN the game - not who wins, but stuff like 'will this player score?' or 'how many yards will they run?'
Full Explanation
Proposition bets are wagers on specific events within a game, not tied to the final outcome. Can be player-based, team-based, or game-based.
💡 Example
Patrick Mahomes Over 285.5 passing yards. Travis Kelce anytime touchdown scorer. Total sacks in game Over 4.5.
Pro Tips
- →Research individual matchups and trends
- →Weather impacts passing props heavily
- →Game script matters - blowouts affect playing time
Related terms
Futures
intermediateBetting on something that won't happen for a long time - like who wins the NFL Championship or MVP before the season even starts!
Full Explanation
Futures are long-term bets on outcomes determined weeks or months in the future. Your money is tied up until the event concludes.
💡 Example
Chiefs to win NFL Championship at +450 (bet before season). Lamar Jackson MVP at +800.
Pro Tips
- →Odds change throughout the season
- →Shop around - futures odds vary widely
- →Consider hedging if your team makes deep playoff run
Related terms
Live/In-Game Betting
intermediateBetting WHILE the game is happening! The odds keep changing based on what's going on. Fast and exciting!
Full Explanation
Live betting allows wagers during the game with constantly updating odds. Lines shift based on score, time remaining, momentum, and other factors.
💡 Example
Chiefs down 14-0 early? Their live spread might move from -7 to +3. Jump in if you think they'll rally.
Pro Tips
- →Odds move fast - be decisive
- →Watch the game; don't bet blind
- →Great for reacting to injuries or momentum shifts
Section review
Quick check: Bet types
1.You bet the Chiefs −7. They win 28–21 (by exactly 7). What happens?
2.A moneyline bet is mainly about…
3.In a parlay, how many legs must win for the ticket to cash?
Visual learner? Watch the under-one-minute lessons.
Browse video lessonsWhen you have a bet riding on a game, you have action on it.
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What is action in sports betting? A wager or betting interest in an event. In some sportsbook rules, action can also describe whether a wager remains valid despite a listed-player or starting-pitcher change. In plain terms: if money is riding, you have action. And when a book grades a bet as action, it means the bet stands even though something about the listing changed. “I've got action on the late game.” Let's use this example. You bet a baseball game listed with a certain starting pitcher. Under that book's rules the wager is action even if the pitcher changes — the ticket stands. House rules differ, so know what your book counts as action before you bet. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Ticket, Stake, and Book. Every term is explained free at thecoldline.com.
A wager or betting interest in an event. In some sportsbook rules, "action" can also describe whether a wager remains valid despite a listed-player or starting-pitcher change.
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"I have action on the late game."
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Like two if-bets running forward AND backward at once — spreads your risk across both orders.
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What is an action reverse in sports betting? Two or more if-bets linked in both directions; each chain proceeds on a win, push, or no-action result under the named contract, while a loss stops that chain. “I placed an A and R on this game to make things interesting.” Let's use this example. This is a hypothetical fixed-risk Double Action Action Reverse with picks in two distinct games. Pick A is Kansas City minus three at minus one ten in Game A. Pick B is Buffalo plus four at minus one ten in Game B. In this named Double Action contract, the next fixed one-hundred-dollar ticket activates after a win, push, or no-action result. A loss stops only that direction. A push or no-action ticket returns its stake and adds zero to the net. This action reverse contains two simultaneous double-action if-bet chains: one hundred dollars on Kansas City, then one hundred dollars on Buffalo; and one hundred dollars on Buffalo, then one hundred dollars on Kansas City. Each one-hundred-dollar win at minus one ten earns ninety dollars and ninety-one cents. If both picks win, all four reached tickets win: four hundred dollars total staked, seven hundred sixty-three dollars and sixty-four cents aggregate return, and three hundred sixty-three dollars and sixty-four cents maximum profit. If both picks lose, only the two first legs lose, for a two-hundred-dollar maximum loss. One win and one loss nets a loss of one hundred nine dollars and nine cents. A win plus a neutral result nets one hundred eighty-one dollars and eighty-two cents. A loss plus a neutral result also reaches the two-hundred-dollar maximum loss, and two neutral results net zero. These figures apply only to this fixed-risk hypothetical; the accepted ticket and house rules control. An action reverse does not guarantee profit. Related lessons: If Bet, Parlay, and Stake.
Two or more if-bets linked in both directions; each leg triggers the next with "action" (the chain proceeds even on a push or no-action leg).
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"A $50 action reverse on Chiefs and Bills runs Chiefs→Bills and Bills→Chiefs. Total risk $100; one loss only stops the chains from that point on."
Related terms
Term quiz
Check yourself: Action reverse
1.An action reverse is…
2.A $50 action reverse on the Chiefs and Bills risks a total of…
3.In an ACTION reverse, what happens when a leg pushes (no action)?
−150 means risk $150 to win $100. +130 means risk $100 to win $130.
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What are American odds in sports betting? The US-style price format: negative for favorites (how much to risk to win $100), positive for underdogs (profit on a $100 risk). In plain terms: minus 150 means risk $150 to win $100. plus 130 means risk $100 to win $130. “Thank God for American odds — I still don't understand how these Europeans do it.” Let's use this example. A $100 stake at minus 150 profits $66.67 and returns $166.67 total on a win. A $100 stake at plus 130 profits $130 and returns $230 total on a win. Lines move and books differ. Nothing here is a guarantee or a command to bet — it's how the number works. Related lessons: Implied Probability, Moneyline, and Vigorish. Every term is explained free at thecoldline.com.
The US-style price format: negative for favorites (how much to risk to win $100), positive for underdogs (profit on a $100 risk).
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"Standard sides often sit near −110 on both sides after juice."
Related terms
Finding two books with different odds where you can bet both sides and always win. Rare!
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What is arbitrage in sports betting? Exploiting odds differences to guarantee profit regardless of outcome. In plain terms: two books disagree hard enough that backing both sides costs less than either payout. Every outcome returns more than the total staked — on paper. “Last night was a great day — wound up having a day to myself without a sweat. Picked off some arb plays that guaranteed landing in the green.” Let's use this example. Book A has the over at plus one ten; Book B has the under at plus one five. Stake both sides correctly and either result returns more than the combined outlay. Real arbs are small, vanish fast, and books limit accounts that chase them — the catch is the career, not the math. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Line Shopping, No-Vig Fair Value, and Hedge. Every term is explained free at thecoldline.com.
Exploiting odds differences to guarantee profit regardless of outcome.
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Related terms
How often a team covers the spread. "Chiefs are 8-4 ATS this season."
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What does against the spread mean in sports betting? A team's record when accounting for the point spread. In plain terms: straight-up says who won the game. Against the spread says who beat the number. A team can win every headline and still be a losing bet. “Did you see the Raiders are 0 and 12 against the spread against the Broncos?” Let's use this example. Kansas City is eleven and one straight up but only eight and four against the spread — they win games, they don't always win by enough. For a spread bettor, the eight and four is the record that matters. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Point Spread, Cover, and Chalk. Every term is explained free at thecoldline.com.
A team's record when accounting for the point spread.
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Game's basically over but a late touchdown makes the underdog cover. Painful!
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What is a backdoor cover in sports betting? Covering the spread with a late, often meaningless score. In plain terms: the game is decided but the ticket isn't. A garbage-time score flips the spread result while nobody on the field cares. “I warned you about celebrating early. You just got backdoored, and you have no one to blame but yourself.” Let's use this example. Buffalo trails 35 to 14 as ten-point underdogs, then scores twice against a soft defense to lose 35 to 28. The favorite backers had it covered all night — one meaningless drive, and Buffalo plus ten cashes through the back door. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Cover, Bad Beat, and Point Spread. Every term is explained free at thecoldline.com.
Covering the spread with a late, often meaningless score.
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"Bills down 35-14 score twice in garbage time to lose 35-28. Bills +10 covers."
The most painful losses. You should have won but something crazy happened.
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What is a bad beat in sports betting? January 2000. Wild-card weekend, Buffalo at Tennessee — the Titans closed as a four-and-a-half-point favorite. With sixteen seconds left, Buffalo kicks a field goal to take the lead, 16 to 15. Bills backers are already counting the money — the moneyline and Buffalo plus four and a half both look home free. All that is left is a kickoff. Then this happened. Dyson and Byrd are deep. Taken by Neal. He gives it to Wycheck. Wycheck... that looked like a forward pass... ...taken by Dyson! Dyson down the sideline! Dyson's gonna go all the way! And there are no flags. There are no flags on the play. It is a touchdown — but we need to look at that replay. Losing a bet in an improbable, heartbreaking way. “I see a lot of bad beats in my day, but that Music City Miracle is the icing on the cake.” Let's use this example. That was the Music City Miracle. A throwback across the field to Frank Wycheck, a lateral out to Kevin Dyson — upheld as backward on review — and seventy-five yards later, Tennessee had won it, 22 to 16. And here is the betting scar: Tennessee had closed as a four-and-a-half-point favorite, so that one return did not just win the game — Tennessee won by six and covered the spread too. The Buffalo moneyline and Buffalo plus four and a half died on the same kickoff. That is a bad beat: the ticket settles on the final score, no matter how it gets there. Bad beats happen, but they do not make the next bet more likely to win. Do not chase a loss or raise your next stake to win it back. Bet only where it is legal and only if you meet your jurisdiction's age requirement. If betting feels hard to control, stop and seek help. Related lessons: Moneyline, Hedge, and Backdoor Cover. Every term is explained free at thecoldline.com. Before you go: take the mini quiz right here on this page. And when you're ready, build a test parlay, round robin, or if bet in the free guided calculator — it explains exactly what you built, in plain English.
Losing a bet in an improbable, heartbreaking way.
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"You bet Under 47.5. Score is 44-3 with 10 seconds left. Garbage time TD makes it 47. Bad beat."
Your betting piggy bank. Only bet with money you can afford to lose.
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What is a bankroll in sports betting? Rounders. Everything Mike McDermott has — thirty grand, his entire bankroll — is riding along in his pocket to Teddy KGB's basement. Then this happened. This is Teddy KGB's place. You won't find it in the Yellow Pages. Give me three stacks of high society. Thirty thousand. The total amount of money you've set aside specifically for betting. In plain terms: Your betting piggy bank. Only bet with money you can afford to lose. Keep it separate from everyday money, so you always know exactly what betting is costing you. Most bettors size each bet as a small, steady percentage of their bankroll. If the bankroll is gone, betting stops — never top it up with money you need. “It's all about bankroll management — if you aren't disciplined, you too can wind up the next Joey Jacoby.” Let's use this example. For an illustrative $5,000 bankroll, 2 percent is a $100 stake: $5,000 times 0.02 equals $100. The percentage is an example, not a universal recommendation. Lines move and books differ. Nothing here is a guarantee or a command to bet — it's how the number works. Related lessons: Action, Sportsbook, and Handle. Every term is explained free at thecoldline.com.
The total amount of money you've set aside specifically for betting.
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"If your bankroll is $500, a 2% bet would be $10."
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The place where you make your bets - like DraftKings, FanDuel, or a casino.
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What is a book in sports betting? The company or establishment that accepts bets. In plain terms: the book is the house — it posts the prices, takes both sides, and keeps a cut either way. Every number you see starts at a book. “It's a whole new world, son — ten years ago everyone had a local book.” Let's use this example. The same game can sit at different prices at different books: Book A posts Kansas City minus six and a half, Book B posts minus seven. Same game, different number — which is exactly why line shopping exists. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Vig, Line Shopping, and Moneyline. Every term is explained free at thecoldline.com.
The company or establishment that accepts bets.
Pay more to get a better number. Move Chiefs -7 to Chiefs -6 by paying extra vig.
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What are buying points in sports betting? Paying extra juice to move the spread in your favor. In plain terms: Pay more to get a better number. Move Chiefs minus 7 to Chiefs minus 6 by paying extra vig. “We should rename it the Jacoby special, because he just can't get out of his own way — he's literally buying points on games that don't have a key number in sight.” Let's use this example. In one illustrative market, Kansas City minus 6.5 at minus 110 moves to Kansas City minus 6 at minus 120. The bettor buys half a point and accepts a higher price. Point and price increments vary by book. Lines move and books differ. Nothing here is a guarantee or a command to bet — it's how the number works. Related lessons: Action Reverse, Against The Spread, and Cover. Every term is explained free at thecoldline.com.
Paying extra juice to move the spread in your favor.
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"Standard -110 might become -120 to buy a half-point."
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The team everyone expects to win.
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What is chalk in sports betting? The favorite. Betting on chalk means betting favorites. In plain terms: chalk is the team everyone expects to win. Chalk prices are shorter, so winning pays less — favorites win more often, but not always. “Who's the chalk in the Yankees–Cubs game tonight? Haven't had a chance to look it up yet.” Let's use this example. Kansas City at minus 180 is the favorite, or chalk. The label describes the market favorite; it does not guarantee that the ticket wins. Lines move and books differ. Nothing here is a guarantee or a command to bet — it's how the number works. Related lessons: Arb, Backdoor Cover, and Bad Beat. Every term is explained free at thecoldline.com.
The favorite. Betting on chalk means betting favorites.
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""I'm taking the chalk this week" = betting all favorites."
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Betting more because you're losing. BAD IDEA! This is how bankrolls disappear.
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What is chasing in sports betting? Owning Mahowny. A bank manager has been feeding a secret habit with the bank's money. Tonight he is up millions — enough to walk away clean — and the one man who knows it is begging him to quit. Then this happened. I gotta say something. — What's that? You gotta pick up right now. Now. Walk out. — Can't do that. — Sure you can. — Can't do that. — Look what you did — you've got him by the balls. Tell me, man. Please. Just pick up. Walk. Right now. Bernie, I just got here. Increasing bet sizes after losses to try to get even. Very dangerous! In plain terms: chasing is betting bigger because you just lost — trying to win it all back in one swing. It is the single fastest way a bankroll disappears. “Well guys, I'm done for the week. Monday's a new week — the last thing I need is to bury myself chasing.” Let's use this example. Owning Mahowny is the truest chasing story ever filmed — Philip Seymour Hoffman as a bank manager betting bigger and bigger to get out of the hole, until the hole owned him. The real rule is brutal and simple: after a loss, the next bet is the same size — or nothing at all. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Tilt, Bankroll, and Unit. Every term is explained free at thecoldline.com.
Increasing bet sizes after losses to try to get even. Very dangerous!
The last odds before kickoff. Sharps try to beat this line.
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What is the closing line in sports betting? The final odds available right before the event starts. In plain terms: the closing line is the market's final answer — every bet, injury, and forecast baked into one last number. Sharps measure themselves against it. “What did the Lions close at? They've been crushing the closing line all year.” Let's use this example. Kansas City closes minus seven. If your ticket says minus six, you beat the close; if it says minus eight, the market beat you. Do that math across hundreds of bets and you get closing line value — the sharpest scoreboard there is. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Closing Line Value, Opening Line, and Line Movement. Every term is explained free at thecoldline.com.
The final odds available right before the event starts.
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If you bet Chiefs −6 and it closes −7, you beat the closer by a point. That is CLV.
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What is closing line value in sports betting? Beating the closing market on the number or price you bet — a better spread/total, a better American price on the same outcome, or an improvement in no-vig probability terms. In plain terms: If you bet Chiefs minus 6 and it closes minus 7, you beat the closer by a point. That is CLV. Bettors track CLV because beating the close consistently is a sign of getting good numbers. “I'm sure the guy on Twitter is a great handicapper, but the fact he don't post his CLV kinda tells me he's full of shit.” Let's use this example. At the accepted timestamp, Kansas City is minus 6; the same spread market closes minus 7. At another accepted timestamp, the same outcome is minus 110 and closes minus 125. Those are spread and price closing-line comparisons, not profit guarantees. Lines move and books differ. Nothing here is a guarantee or a command to bet — it's how the number works. Related lessons: Closing Line, Opening Line, and Line Movement. Every term is explained free at thecoldline.com.
Beating the closing market on the number or price you bet — a better spread/total, a better American price on the same outcome, or an improvement in no-vig probability terms.
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"You bet Chiefs −6 and the market closes Chiefs −7 (spread CLV). You bet Chiefs −110 and the same outcome closes −125 (price CLV)."
Related terms
A curse called down from the broadcast booth — praise a team, a kicker, or a streak on air before the result is final, and watch it flip. It is sometimes called the commentator's jinx.
A curse called down from the broadcast booth — praise a team, a kicker, or a streak on air before the result is final, and watch it flip. It is sometimes called the commentator's jinx.
""Well, Bills looked good until Tony Romo hit them with the commentator's curse.""
A person whose presence brings bad luck. Similar to a mush — when a cooler shows up, the winning stops.
Includes an authorized film excerpt for discussion and education only; it is not a betting recommendation.
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What is a cooler in sports betting? A Bronx Tale. Sonny's dice game is running hot — and the one guy nobody wants near the table just walked in. Then this happened. You can do it. No, no, no. Frankie Coffeecake, no good. I don't want his face looking at that face when he's throwing my dice. No, no, no. Jimmy, get a towel from the bar. Put it over his head. You got a towel over there? Come on, Sonny. I don't want a towel over my head. It's embarrassing. Put him in the fucking bathroom. Get him out of here. Come on. Wait a minute. I got money here! Get the fuck out of here! Get him the fuck out! Put him in the bathroom. Get over here. Rat bastard locked us in the bathroom. It's degrading. Very degrading. A person whose presence brings bad luck. Similar to a mush — when a cooler shows up, the winning stops. In plain terms: a cooler kills a heater. The table is hot, everyone is cashing — then the cooler shows up, and the run dies. The scene you just watched is the classic move: nobody wants the jinx anywhere near the action. “Get him out of here, he's a cooler — we haven't hit a bet since he walked in.” Let's use this example. The table is hot: three straight wins, everyone pressing. A cooler sits down, and the next two bets lose — the heater is dead. In the movie The Cooler, that was literally the job: the casino kept a man whose luck ran so cold they would walk him over to a hot table to end the streak. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Arb, Backdoor Cover, and Bad Beat. Every term is explained free at thecoldline.com.
A person whose presence brings bad luck. Similar to a mush — when a cooler shows up, the winning stops.
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""Get him out of here, he's a cooler — we haven't hit since he walked in.""
"The Chiefs covered!" means they won by more than the spread.
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What does cover mean in sports betting? To cover means your pick wins after the point spread is applied. A favorite covers by winning by more than the spread; an underdog can cover by losing by less than the spread or by winning outright. A team can win the game and still fail to cover; an underdog can lose the game and still cover. “Did the Titans cover the spread last night?” Let's use this example. Cover is a spread result, not simply the game winner. Kansas City is minus 6.5 and wins 27 to 20, a 7-point margin. Seven is greater than 6.5, so the Kansas City minus 6.5 spread ticket covers. If Kansas City won by only three, Kansas City would win the game but the minus 6.5 spread ticket would lose. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Against the Spread, Point Spread, and Buying Points.
Winning against the point spread.
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"Chiefs -7 win by 10 = they covered. Bills +7 lose by 3 = they covered too!"
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Short for degenerate. Someone who bets on everything compulsively.
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What is a degen in sports betting? Mississippi Grind. Two gamblers pointed a road trip at New Orleans, betting on everything that moves along the way. Tonight, the tables are listening. Then this happened. [The streak — blackjack, hand after hand] [The table can't miss — chips keep stacking] [On to the craps table — nobody walks away] Short for degenerate. Someone who bets on everything compulsively. In plain terms: degen is what bettors call themselves when the action is the point — any sport, any hour, any market. Said with a laugh, but the word is a warning wearing a joke. “Full degen mode — I'm betting Korean baseball at three A.M.” Let's use this example. Mississippi Grind rides two degens across the country — every dog track, every casino, every backroom game on the way, even a winning streak they can't walk away from. The tell isn't the size of the bets; it's that there always has to be one. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Sweating, Tilt, and Bankroll. Every term is explained free at thecoldline.com.
Short for degenerate. Someone who bets on everything compulsively.
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""Full degen mode — I'm betting Korean baseball at 3am.""
The underdog. The team expected to lose.
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What is a dog in sports betting? The underdog. The team expected to lose. In plain terms: the dog is the side the market expects to lose, so it pays more when it does win. The other side is the favorite. Upsets happen, which is why underdog prices pay more. “Joey Jacoby is so square he's never bet a dog in his life.” Let's use this example. Buffalo plus 7 loses the game 24 to 20. The margin is 4, and 4 is less than 7, so the Buffalo underdog spread ticket covers. Lines move and books differ. Nothing here is a guarantee or a command to bet — it's how the number works. Related lessons: Arb, Backdoor Cover, and Bad Beat. Every term is explained free at thecoldline.com.
The underdog. The team expected to lose.
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""I like the dog at +7.""
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A bet that pays 1:1. No juice advantage.
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What is even money in sports betting? A bet that pays 1:1. No juice advantage. In plain terms: even money doubles you up — one hundred wins one hundred. On the American board it prints as plus one hundred. “Getting even money on that? Take it.” Let's use this example. One hundred dollars at even money returns two hundred: your stake plus one hundred profit. Compare minus one ten, where one hundred profits only ninety dollars and ninety-one cents — the difference is the book's cut. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: American Odds, Vig, and Payout. Every term is explained free at thecoldline.com.
A bet that pays 1:1. No juice advantage.
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""Getting even money on that? Take it.""
Math that estimates whether a price is good or bad long-term — not a promise that today's bet wins.
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What is expected value in sports betting? The average amount you expect to win or lose per bet over time, given your estimated win probability and the offered price. In plain terms: expected value asks one question — if you made this exact bet a thousand times, would you end up ahead? It grades the price, not tonight’s result. “The expected value on the Yankees game is 3 percent — for the fourth time this week. I'm all over it.” Let's use this example. At plus one twenty with a forty-eight percent win estimate, one hundred dollars returns about five dollars and sixty cents per bet on average. Any single night can lose — the edge only shows up across the long run, and only if the forty-eight percent is honest. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Implied Probability, No-Vig Fair Value, and Closing Line Value. Every term is explained free at thecoldline.com.
The average amount you expect to win or lose per bet over time, given your estimated win probability and the offered price.
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"At +120 with a $100 stake and 48% estimated win chance, EV ≈ +$5.60 per bet."
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"I'm fading the public" = betting opposite of what most people bet.
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What does it mean to fade in sports betting? To bet against someone or something. In plain terms: fading is picking a side by betting against the other one — a team, a trend, a tout, or the public itself. “I'm fading the public on this one.” Let's use this example. Eighty percent of tickets pile onto the favorite. A fade bettor takes the underdog — not because the dog looks great, but because the popular side often carries the worst of the number. The bet is against the crowd, not for the team. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Public Money, Square, and Contrarian. Every term is explained free at thecoldline.com.
To bet against someone or something.
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A long-term bet on a season outcome like a championship winner.
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What is a futures bet in sports betting? A long-term bet on a season outcome like a championship winner. In plain terms: a future is a season-long ticket — champions, win totals, awards. Your money can be parked for months. “I grabbed Lions futures at plus five thousand back in August.” Let's use this example. In August you take a team to win the title at plus five thousand — one hundred dollars to win five thousand. The ticket lives until the season ends: months of sweat, one grade at the very end. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Payout, Implied Probability, and Moneyline. Every term is explained free at thecoldline.com.
A long-term bet on a season outcome like a championship winner.
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""I got the Lions futures at +5000 in August.""
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Meaningless action late in a blowout that can affect the spread.
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What is garbage time in sports betting? A Sunday in November. Patriots and Browns, decided for a full quarter — starters resting, crowd gone quiet. The tickets, though, are very much alive. Then this happened. Got a couple of things to show you from games that are pretty much already decided — the Patriots are going to beat the Browns, but watch this. Jakobi Meyers breaks a tackle, gets into the end zone — that is his first NFL touchdown. And you think this guy's a beloved teammate — look at the guys celebrate. Jakobi Meyers' first touchdown. That's more than eleven dudes on the field coming down to celebrate with him. They're coming from the sidelines — half the team came into the end zone. Meaningless action late in a blowout that can affect the spread. In plain terms: the game is decided, the starters are done — and the points still count. Garbage time means nothing in the standings and everything on tickets. “Garbage time killed the under.” Let's use this example. Up twenty-four with three minutes left, the backups are in and the defense is soft — and a late touchdown still moves every spread and total on the board. Ask anyone who has watched a backdoor cover walk in through garbage time. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Backdoor Cover, Cover, and Total. Every term is explained free at thecoldline.com.
Meaningless action late in a blowout that can affect the spread.
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""Garbage time killed the under.""
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A bettor who grinds out small, consistent profits over time.
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What is a grinder in sports betting? Hard Eight. Outside a Reno diner sits a kid who just lost everything in Vegas — and across the table, an old professional with an offer. Then this happened. How much money do you have left? Nothing. Why would he give you fifty dollars? What would you do with it? I'd eat. How long can you eat? How long can you live on fifty dollars? I don't know. I would bet not very long. You would bet. I'll tell you what. You come with me back to Vegas, I'll loan you fifty dollars — I'll show you what you did wrong. A bettor who grinds out small, consistent profits over time. In plain terms: a grinder wins small on purpose — steady stakes, boring bets, no hero swings. The profit is in the repetition, not the rush. “He's a grinder — two units a day, every day.” Let's use this example. Hard Eight opens with an old professional teaching a broke kid the grind — how to work a casino patiently for small edges and comps instead of swinging for the score. Zero glamour, total discipline. That is the grinder's whole religion. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Unit, ROI, and Bankroll. Every term is explained free at thecoldline.com.
A bettor who grinds out small, consistent profits over time.
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""He's a grinder — 2 units a day, every day.""
Doing your homework to figure out which bets are good.
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What is handicapping in sports betting? Sunday at the Simpsons'. Homer settles in for the expert picks — from a man who is right 52 percent of the time. Take it away, Jimmy. And now, with his picks for today's games — the man who's right 52 percent of the time — Smooth Jimmy Apollo. Thank you, Brent. Our first game today, Denver and New England, is too close to call. Aw. But if you're one of those compulsive types who just has to bet, well, I don't know... hmm... Denver. Woo-hoo! Denver! Analyzing games to find betting value. In plain terms: handicapping is the homework — injuries, matchups, weather, numbers — done before the bet, to find prices the market got wrong. “I spent all week handicapping the card before I bet a dime.” Let's use this example. The Simpsons nailed it in Lisa the Greek: Lisa breaks down the games, Homer just rides the picks — the handicapper is the one doing the work. This whole site is a handicapping desk: model, weather, market. The work happens before the wager. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Expected Value, Line Shopping, and Sharp. Every term is explained free at thecoldline.com.
Analyzing games to find betting value.
How much money was bet in total — not the same as the book's profit.
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What is handle in sports betting? The total amount of money wagered on an event, market, sportsbook, or period. In plain terms: handle is everything wagered, both sides combined. It measures how much money moved — not who won it. “The handle on the Rams game is heavy. It can break either way.” Let's use this example. A game takes sixty million on the favorite and forty million on the underdog. The handle is one hundred million. The book's profit isn't the handle — it's whatever the losing side leaves behind after winners are paid. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Vig, Book, and Public Money. Every term is explained free at thecoldline.com.
The total amount of money wagered on an event, market, sportsbook, or period.
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"The championship game generated $180 million in handle."
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Like insurance for your bet. Bet both sides to lock in some winnings.
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What does hedge mean in sports betting? A hedge is a bet on the opposite side that can reduce risk. Whether it locks in a profit depends on both prices and the stakes on each side. “I got the Bears at 15 to 1 before the season to win the Super Bowl. With them now a 3 to 1 chalk, I'm hedging out and taking a W either way.” Let's use this example. You already have one hundred dollars on the Bears to win the Super Bowl at plus nine hundred. If the Bears win, that ticket makes nine hundred dollars in profit and returns one thousand dollars total. The Bears reach the Super Bowl against the Bills as a 7-point favorite. You later place one hundred dollars on Bills full-game moneyline at plus three hundred. If the Bills win, that bet makes three hundred dollars in profit. Subtract the lost one-hundred-dollar Bears futures stake, and the net profit is two hundred dollars. If the Bears win, the futures bet makes nine hundred dollars in profit. Subtract the lost one-hundred-dollar Bills moneyline stake, and the net profit is eight hundred dollars. This assumes the Bears and Bills are the only two winner outcomes, both wagers were accepted and remain valid, the full-game moneyline includes overtime, and neither bet is voided. House and market rules control settlement. These specific prices and stakes produce a positive net in either outcome; not every hedge does. Bears minus seven is context only and is not part of this moneyline hedge math. Related lessons: Action Reverse, Against the Spread, and Buying Points.
Placing a bet on the opposite side to guarantee profit or minimize loss.
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"Your futures bet on Chiefs is alive. Bet against them in the NFL Championship to guarantee profit."
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That little half-point that can make or break your bet.
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What is the hook in sports betting? A half-point in the spread (the .5 in -7.5). In plain terms: the hook is the half point — it kills every push. On or off the number, it decides tickets all by itself. “The hook killed me — I had minus seven and a half and they won by seven.” Let's use this example. Kansas City minus seven and a half wins by exactly seven: with the hook, the ticket loses. At minus seven flat, the same game is a push and the stake comes back. Half a point, whole different outcome. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Push, Buying Points, and Key Numbers. Every term is explained free at thecoldline.com.
A half-point in the spread (the .5 in -7.5).
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""The hook killed me - I had Chiefs -7.5 and they won by 7.""
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A conditional bet: if the first bet wins, the winnings automatically go on the next one.
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What is an if bet in sports betting? A conditional bet: if the first bet wins, the winnings automatically go on the next one. In plain terms: the second bet only happens if the first one wins. Bettors use it to spread one budget across two games without risking both stakes up front. “I put in an if bet so I don't have to go back to the window later and place the second one if my first wins.” Let's use this example. Under this hypothetical book's stated rules, an initial $100 ticket that wins activates a second $100 ticket, so maximum sequential exposure is $200. If the first ticket loses, the second does not activate. Push and rollover rules vary by house. Lines move and books differ. Nothing here is a guarantee or a command to bet — it's how the number works. Related lessons: Arb, Backdoor Cover, and Bad Beat. Every term is explained free at thecoldline.com.
A conditional bet: if the first bet wins, the winnings automatically go on the next one.
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""If bet — if the early game hits, roll it to the night game.""
Term quiz
Check yourself: If bet
1.In an if bet, when is the next leg placed?
2.What happens to the later legs of an if bet after a loss?
3.How does an if bet differ from a parlay?
What percent chance the price says this side has. −110 ≈ 52.4%; +150 ≈ 40%.
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What is implied probability in sports betting? Dumb and Dumber. Lloyd drove two thousand miles to ask Mary one question — and to hear his exact odds. Then this happened. What do you think the chances are of a guy like you and a girl like me... ...ending up together? Well, Lloyd, that's difficult to say. We really don't— Hit me with it! Just give it to me straight! I came a long way just to see you, Mary. The least you can do is level with me. What are my chances? Not good. You mean, not good like... one out of a hundred? I'd say more like... one out of a million. So you're telling me there's a chance. YEAH! The win chance baked into American (or other) odds, before removing the book's hold. Posted two-way probabilities often sum above 100% because of vig. In plain terms: What percent chance the price says this side has. minus 110 is about 52.4%; plus 150 is about 40%. “That −150 price has an implied probability of about 60 percent.” Let's use this example. minus 150 = 60.0% implied probability; plus 130 is about 43.48% implied probability. Lines move and books differ. Nothing here is a guarantee or a command to bet — it's how the number works. Related lessons: Vigorish, American Odds, and No-Vig Fair Value. Every term is explained free at thecoldline.com.
The win chance baked into American (or other) odds, before removing the book's hold. Posted two-way probabilities often sum above 100% because of vig.
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"−150 = 60.0% implied probability; +130 ≈ 43.48% implied probability."
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In football, games often end with a 3 or 7 point difference (field goals and touchdowns).
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What are key numbers in sports betting? The most common margins of victory. In NFL: 3 and 7 are critical. In plain terms: football games land on three and seven far more than any other margins — field goals and touchdowns. Numbers near them are worth real money. “I only take teasers that cross key numbers.” Let's use this example. More NFL games are decided by exactly three than any other margin. That's why minus two and a half is so much stronger than minus three and a half — one field goal sits between them, and thousands of games have landed right on it. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Point Spread, Buying Points, and Hook. Every term is explained free at thecoldline.com.
The most common margins of victory. In NFL: 3 and 7 are critical.
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"Getting -2.5 instead of -3 is huge because so many games end with a 3-point margin."
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To take your winnings and roll them into the next bet.
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What does let it ride mean in sports betting? Let It Ride. Jay Trotter, career small-timer, just caught a whispered tip in his cab — and for once, the day decides to cooperate. Then this happened. Mr. Trotter — you got a minute? What do you like in the third? Yeah... seven horse. — Seven horse. All right! I won't forget this. Yes! Yes! Yes! To take your winnings and roll them into the next bet. In plain terms: letting it ride means the payout never comes home — stake and winnings roll straight onto the next bet. Streaks feel unstoppable right up until the bet that stops. “Won the early game — letting it ride on the late one.” Let's use this example. There's a whole movie about it — Let It Ride, one lucky day at the track that keeps rolling because he refuses to pocket a win. Great story, honest math: ride three coin-flips in a row and the whole pile is living on roughly a one-in-eight shot. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Parlay, Press, and Bankroll. Every term is explained free at thecoldline.com.
To take your winnings and roll them into the next bet.
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""Won the early game, letting it ride on the late one.""
The line "moved" from Chiefs -7 to Chiefs -7.5 because of betting action.
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What is line movement in sports betting? When odds change between opening and closing. In plain terms: lines move because money and news show up. Reading WHY a number moved tells you more than the move itself. “The line movement in that Giants–Jaguars game has been a rollercoaster all week.” Let's use this example. Kansas City opens minus six, sharp money arrives, and it's minus seven by Friday. Then the other team's starting quarterback is ruled out and it jumps to minus nine. Same game — two different reasons the number moved. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Steam, Reverse Line Movement, and Closing Line. Every term is explained free at thecoldline.com.
When odds change between opening and closing.
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"Sharp money on the Bills caused the line to move from -7 to -6."
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Like price comparing before buying. Different books have different odds!
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What is line shopping in sports betting? Comparing odds at multiple sportsbooks to get the best number. In plain terms: it works like price-comparing before you buy. Different books post different numbers on the same game. “Since we're so overexposed on minus 8 in the Texans game, let's start line shopping for any better number we can find.” Let's use this example. At the same observation time and on the same Kansas City spread market, Book A posts minus 6.5 and Book B posts minus 7. For a Kansas City backer, minus 6.5 is the easier number; availability can change. Lines move and books differ. Nothing here is a guarantee or a command to bet — it's how the number works. Related lessons: Arbitrage, Chasing, and Closing Line Value. Every term is explained free at thecoldline.com.
Comparing odds at multiple sportsbooks to get the best number.
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"Book A has Chiefs -6.5, Book B has Chiefs -7. Always take the -6.5!"
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Betting during the game as odds change in real time.
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What is live betting? Betting during the game as odds change in real time. In plain terms: live betting reprices the game while you watch. Every score, every possession, every injury moves the number. “I hit it live at halftime — way better number.” Let's use this example. You liked the favorite at minus seven before kickoff and passed. They fall behind early, and live the same team is plus three. Same game, better number — if your read on the game is right. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Line Movement, Moneyline, and Point Spread. Every term is explained free at thecoldline.com.
Betting during the game as odds change in real time.
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""I hit it live at halftime — way better number.""
The dream! Bet one side at one number, bet the other side when the line moves, and win BOTH.
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What does middle mean in sports betting? A middle is two opposite-side spread bets at different numbers that can both win if the final margin lands between those numbers. “Did you see Buckeye had the Eagles at plus 4 today? I wound up catching the middle on the slow line move — Pinnacle had minus 2, and miraculously it landed on 3.” Let's use this example. At Book A, the ticket is Kansas City minus two. At Book B, the opposite side is Miami plus four. Kansas City wins by three. Three is greater than two, so Kansas City minus two covers. Miami lost by only three, which is fewer than four, so Miami plus four also covers. The margin landed inside the gap: two is less than three, and three is less than four. Both spread tickets win. Different accepted lines created the middle; the result was never guaranteed. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Against the Spread, Point Spread, and Line Shopping.
Winning both sides of a bet due to line movement.
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"Bet Chiefs -3, line moves to -7, bet Bills +7. If Chiefs win by 4, 5, or 6, you win BOTH bets!"
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A bet on who wins, straight up, no spread.
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What is a moneyline in sports betting? A bet on who wins, straight up, no spread. In plain terms: you're just picking who wins the game. The final margin doesn't matter. “The only time I personally justify taking the moneyline is when the spread is between minus 1 and minus 2.5 — so I don't get pushed or hooked on a close game.” Let's use this example. Both sides are priced off a one-hundred-dollar bet. Kansas City is the favorite at minus one sixty, so one hundred dollars profits sixty-two dollars and fifty cents — you risk more to win less. Buffalo is the underdog at plus one forty, so one hundred dollars profits one hundred forty dollars — you risk less to win more. Buffalo wins twenty-four to twenty-one, so the Buffalo moneyline cashes for one hundred forty dollars while the Kansas City moneyline loses its one-hundred-dollar stake. You only needed your side to win outright; the price sets the payout. Lines move and books differ. Nothing here is a guarantee or a command to bet — it's how the number works. Related lessons: Arb, Backdoor Cover, and Bad Beat. Every term is explained free at thecoldline.com.
A bet on who wins, straight up, no spread.
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""I took the moneyline — don't care about the spread.""
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Term quiz
Check yourself: Moneyline
1.A moneyline bet is on…
2.A -150 moneyline means…
3.A +130 moneyline means…
A person who brings bad luck. Nobody wants to bet with a mush.
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What is a mush in sports betting? A Bronx Tale, at the track. C has everything on a horse called Kryptonite — and Kryptonite is cruising, right up until the unluckiest man in the neighborhood bets him too. Then this happened. He bet the fucking horse. He bet Kryptonite. Give me the tickets. But Sonny, we're winning. You can't win. Mush bet Kryptonite. Tear them up — it's over. We've been mushed. A person who brings bad luck. Nobody wants to bet with a mush. In plain terms: a mush is walking bad luck. Tell him your pick and the pick dies; bring him to the window and the window goes cold. First cousin of the cooler. “Don't tell him the pick — he's a mush.” Let's use this example. The name comes straight out of A Bronx Tale: Eddie Mush was the neighborhood gambler who lost every bet he ever touched — so when he touched yours, it was done. The crew wouldn't even let him watch the dice. That's a mush. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Cooler, Commentators Jynx, and Bad Beat. Every term is explained free at thecoldline.com.
A person who brings bad luck. Nobody wants to bet with a mush.
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""Don't tell him the pick — he's a mush.""
What the odds might look like if the book took no cut — a fair coin-flip split of the market's prices.
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What is no-vig fair value in sports betting? The estimated fair win probabilities (and fair odds) after removing the sportsbook's overround from a market. In plain terms: strip the book's cut out of the two prices and you see the market's true opinion — the fair odds a cut-free book would post. “What's the no-vig fair value at Pinnacle on Bears–Packers?” Let's use this example. A market of minus one eighty and plus one fifty-five de-vigs to roughly sixty-two percent and thirty-eight percent fair. If your own estimate says sixty-six percent, now you can judge the favorite price against the fair number — not the juiced one. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Vig, Implied Probability, and Expected Value. Every term is explained free at thecoldline.com.
The estimated fair win probabilities (and fair odds) after removing the sportsbook's overround from a market.
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"Market −180 / +155 de-vigs to roughly 62.1% / 37.9% fair probabilities (proportional method)."
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A game that's been removed and can't be bet on.
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What does off the board mean in sports betting? Snatch. The fixed fight has gone off-script mid-round — and three amateurs pick that exact moment to rob the bookies. Then this happened. Fill that bag. All bets are off. I am not in here to make a fucking bet! Appreciate it. But all bets are off. If all bets are off, then there can't be any money — can there? I ain't buying that. — Well, that's a shame, because I ain't selling it. It's a fact. A game that's been removed and can't be bet on. In plain terms: when the book stops trusting its own number — a star listed as questionable, a lineup in doubt — it pulls the game entirely. No line, no bets, until it knows more. “The quarterback is questionable — they took the game off the board.” Let's use this example. Snatch plays the chaotic street version: the fix collapses mid-fight and the bookies scream that all bets are off — the market slamming shut in real time. Licensed books do the polite version of the same move: uncertainty appears, and the game comes off the board. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Action, Book, and Line Movement. Every term is explained free at thecoldline.com.
A game that's been removed and can't be bet on.
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""QB is questionable — they took it off the board.""
The starting point - odds when they first come out, often days before the game.
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What is the opening line in sports betting? The first odds posted by sportsbooks for an event. In plain terms: the opening line is the book's first guess, posted early with low limits. The market spends the week correcting it. “Has the opening line on the Jets dropped yet?” Let's use this example. A game opens Kansas City minus six on Sunday night. Money hits it all week and by kickoff it closes minus seven. Bettors who liked Kansas City got the best of it at the opener — that gap is the whole game. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Closing Line, Line Movement, and Closing Line Value. Every term is explained free at thecoldline.com.
The first odds posted by sportsbooks for an event.
A single bet that links two or more picks together. All legs must hit to win. Higher risk, bigger payout.
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What is a parlay in sports betting? Silver Linings Playbook. Pat Sr. has his restaurant money riding on the Eagles — and the house is talking him into combining that bet with a dance-competition score. Two outcomes, one ticket. Then this happened. However — wait a second. I do like the idea of a parlay. What? No parlay. No. No, don't do it. Don't do it. Pat — how do they run this dance competition? How do they score it and everything? I don't know how they score it — we're just participating. Do not put it as part of the parlay, Randy. They go by the Philadelphia rules. Each dancer is scored on a scale of one to ten — you have to average the four judges’ scores. Scores one to ten, right? And you guys are... how good? We suck. — We don't suck. We're happy just to be going. And the people you're competing against? — They're good. Some of them are professionals. A lot better. — A lot better. So if I was to say you only have to score a five... I would be really very generous, right? A single bet that links two or more picks together. All legs must hit to win. Higher risk, bigger payout. In plain terms: one ticket, several picks. If any single pick loses, the whole ticket loses. “When will these squares realize parlays are sucker bets?” Let's use this example. A four-leg parlay only pays if all four picks win. Three out of four still loses the ticket. The payout is bigger than a single bet exactly because winning is harder. Lines move and books differ. Nothing here is a guarantee or a command to bet — it's how the number works. Related lessons: Arb, Backdoor Cover, and Bad Beat. Every term is explained free at thecoldline.com.
A single bet that links two or more picks together. All legs must hit to win. Higher risk, bigger payout.
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""Hit a 4-leg parlay — turned $50 into $600.""
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Term quiz
Check yourself: Parlay
1.A parlay is…
2.One leg of your 4-leg parlay loses. The ticket…
3.Why do parlays pay more than the same picks bet separately?
How many different parlays your teams can make. Round robins are built from these combinations.
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What are parlay combinations in sports betting? The distinct parlays that can be formed from a set of picks — for N picks and parlay size k, "N choose k" combinations. In plain terms: How many different parlays your teams can make. Round robins are built from these combinations. “How many parlay combinations are in Joey Jacoby's six-team round robin? It's been a minute since someone fired that many combos.” Let's use this example. 4 picks make 6 two-team parlays (4 choose 2), 4 three-team parlays (4 choose 3), and 1 four-teamer — 11 combinations in all. Lines move and books differ. Nothing here is a guarantee or a command to bet — it's how the number works. Related lessons: Parlay, Round Robin, and Same Game Parlay. Every term is explained free at thecoldline.com.
The distinct parlays that can be formed from a set of picks — for N picks and parlay size k, "N choose k" combinations.
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"4 picks make 6 two-team parlays (4 choose 2), 4 three-team parlays (4 choose 3), and 1 four-teamer — 11 combinations in all."
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What the book hands back if you win — your bet plus your winnings.
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What is a payout in sports betting? The total returned on a winning bet: stake plus profit. In plain terms: What the book hands back if you win — your bet plus your winnings. Payout includes your stake back — profit is the payout minus the stake. “My three-team parlay has a 6 to 1 payout.” Let's use this example. $100 at minus 110 pays out $190.91: your $100 stake plus $90.91 profit. Books usually show the potential payout on the bet slip before you confirm. Lines move and books differ. Nothing here is a guarantee or a command to bet — it's how the number works. Related lessons: Stake, American Odds, and Implied Probability. Every term is explained free at thecoldline.com.
The total returned on a winning bet: stake plus profit.
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"$100 at -110 pays out $190.91: your $100 stake plus $90.91 profit."
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Term quiz
Check yourself: Payout
1.The payout on a winning bet is…
2.$100 at -110 wins. The payout is…
3.Payout and profit differ because…
No favorite! Just pick the winner. Usually shown as PK or PICK.
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What is a pick'em in sports betting? A game with no point spread. Both teams are even. In plain terms: the market can't split these teams — no favorite, no points. Just pick who wins. “Bears and Packers are a pick'em — no spread to worry about covering.” Let's use this example. The board shows PK. There are no points to give or take: back Kansas City and they simply have to win. A one-point win and a twenty-point win grade exactly the same. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Point Spread, Moneyline, and Even Money. Every term is explained free at thecoldline.com.
A game with no point spread. Both teams are even.
The favorite gives points; the underdog gets a head start.
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What does point spread mean in sports betting? A point spread adds a handicap to the final score. The favorite must win by more than the minus number to cover; the underdog can cover by winning outright or losing by fewer than the plus number. If the final margin equals a whole-number spread, a standard straight spread bet pushes and the stake is returned. Kansas City minus seven and Buffalo plus seven are opposite sides of the same point spread. “What's the point spread in the Lakers game? I heard it moved two points.” Let's use this example. If Kansas City wins 27 to 17, the margin is 10. Ten is greater than seven, so Kansas City minus seven covers. If Kansas City wins 27 to 20, the margin is exactly seven. Under standard straight-bet rules, Kansas City minus seven and Buffalo plus seven both push, so each hypothetical stake is returned. Market and house rules control settlement. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: American Odds, Closing Line Value, and Dime.
A handicap applied to the favorite so both sides have roughly equal juice. Favorite must win by more than the number; dog can lose by less (or win outright) and still cover.
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"Chiefs −7 vs Bills +7. Land on exactly 7? Push — money back."
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A bet on a specific event within a game, not the final outcome.
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What is a prop in sports betting? A bet on a specific event within a game, not the final outcome. In plain terms: props ignore the scoreboard. Player yards, touchdowns, strikeouts — the game inside the game. “I've got a prop on Mahomes over two and a half touchdowns.” Let's use this example. The prop is Mahomes over two and a half passing touchdowns. He throws three, the over cashes — even if his team loses the game. The final score never touched the ticket. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Same Game Parlay, Total, and Moneyline. Every term is explained free at thecoldline.com.
A bet on a specific event within a game, not the final outcome.
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""I got a prop on Mahomes over 2.5 TDs.""
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What casual fans are betting. Sharps sometimes bet against the public.
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What is public money in sports betting? Bets from recreational bettors, usually on favorites and overs. In plain terms: public money is the crowd — favorites, overs, home teams, stars. It shows up late, on the popular side, at whatever the price is. “Did you see the public money in the Chargers game? 82 percent — I'm all over the dog.” Let's use this example. By Sunday morning, seventy percent of tickets are on the favorite and the over. Books expect it and shade prices toward the crowd — which is why the number you get on a public darling is usually a little worse than it should be. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Square, Fade, and Reverse Line Movement. Every term is explained free at thecoldline.com.
Bets from recreational bettors, usually on favorites and overs.
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Hockey's version of the point spread, usually -1.5 / +1.5.
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What is the puck line in hockey betting? Hockey's version of the point spread, usually -1.5 / +1.5. In plain terms: hockey's spread is a standing goal and a half. Favorites must win by two; underdogs can lose by one and still cash. “The puck line is risky but pays more.” Let's use this example. The favorite is minus one eighty on the moneyline, or minus one and a half goals at plus one thirty on the puck line. A two-goal win pays the plus money. A one-goal win — very common in hockey — cashes the moneyline and burns the puck line. Late empty-net goals decide a lot of these. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Run Line, Point Spread, and Moneyline. Every term is explained free at thecoldline.com.
Hockey's version of the point spread, usually -1.5 / +1.5.
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""The puck line is risky but pays more.""
Nobody wins, nobody loses. You get your money back.
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What is a push in sports betting? A tie. The result lands exactly on the spread/total number. In plain terms: Nobody wins, nobody loses. You get your money back. Not every market can push — half-point lines, like minus 7.5, remove the tie. “They like to say a push is as good as a win, but this ain't soccer. I should have bought the hook — oh well, at least I get my money back.” Let's use this example. Kansas City minus 7 wins by exactly 7. Under standard straight-spread rules, the result is a push and the stake is returned. Parlay and nonstandard market treatment follows the applicable house rules. Lines move and books differ. Nothing here is a guarantee or a command to bet — it's how the number works. Related lessons: Action Reverse, Against The Spread, and Buying Points. Every term is explained free at thecoldline.com.
A tie. The result lands exactly on the spread/total number.
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"Chiefs -7, they win by exactly 7. That's a push."
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70% on Team A but the line moves toward Team B? Sharp money on B!
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What is reverse line movement in sports betting? When the line moves opposite to where the money appears to be going. In plain terms: most tickets sit on one team, yet the line walks the other way. The ticket count didn't move that number — bigger, sharper money did. “These reverse line movements are generally sharps coming in late — but tonight, it's clearly squares.” Let's use this example. Seventy percent of bets are on Kansas City minus seven, but by kickoff the number is minus six. The crowd is on one side while the price chases the other — a classic sign the respected money disagrees with the room. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Line Movement, Sharp, and Public Money. Every term is explained free at thecoldline.com.
When the line moves opposite to where the money appears to be going.
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How much profit you make compared to how much you bet. Sustained positive ROI is rare and hard-earned.
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What is ROI in sports betting? Your profit as a percentage of total amount wagered over a sample of bets. In plain terms: return on investment is profit divided by everything you put at risk. It's the honest measure — and sustained positive ROI is genuinely hard. “Been crushing CLV — too bad the ROI don't tell the same story.” Let's use this example. Ten thousand dollars wagered across a season, five hundred dollars of profit — that's a five percent ROI. Small-sounding numbers are the real ones: even the sharpest bettors live in single digits. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Unit, Bankroll, and Expected Value. Every term is explained free at thecoldline.com.
Your profit as a percentage of total amount wagered over a sample of bets.
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"Profit $500 on $10,000 wagered → ROI = 5%."
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Pick 3 or more teams and the book builds all the smaller parlays for you — one loss doesn't sink everything.
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What is a round robin in sports betting? A round robin automatically builds every parlay combination of a selected size from your picks. “I wonder if that sharp throws in his weekly round robin to look like your average Joe.” Let's use this example. Four picks—A, B, C, and D—start the example. Each combination card has a separate illustrative one-hundred-dollar stake. Four picks create six unique two-leg parlay cards: A B, A C, A D, B C, B D, and C D. At one hundred dollars per card, by twos has six hundred dollars in total stake and maximum loss. The same four picks create four unique three-leg cards: A B C, A B D, A C D, and B C D. At one hundred dollars per card, by threes has four hundred dollars in total stake and maximum loss. There is one four-team card, A B C D, with a one-hundred-dollar stake. Selecting every size from two through four makes eleven cards: six plus four plus one. At one hundred dollars per card, that is one thousand one hundred dollars in total stake and maximum loss. Selecting only by twos and by threes makes ten cards and one thousand dollars; the eleventh card is the separate four-team parlay. If A loses while B, C, and D win, seven cards containing A lose, but B C, B D, C D, and B C D can still win. One lost pick does not erase every combination. The $100 stakes are illustrative. Card payouts and settlement follow the accepted odds and house rules. No maximum win can be calculated without accepted odds. A round robin raises total exposure and does not guarantee profit. Related lessons: Parlay, Parlay Combinations, and Teaser.
A wager that automatically builds every parlay combination of a chosen size from your selected teams.
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"A 3-team round robin "by 2s" creates 3 two-team parlays; include the 3-teamer and you have 4 parlays total. A 4-team round robin: 6 two-team, 4 three-team, or 11 parlays combining both sizes."
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Term quiz
Check yourself: Round robin
1.What does a round robin do with your selected teams?
2.A 3-team round robin "by 2s" creates…
3.From 4 teams, how many parlays does an all-combination round robin build?
Baseball's version of the point spread, usually -1.5 / +1.5.
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What is the run line in baseball betting? Baseball's version of the point spread, usually -1.5 / +1.5. In plain terms: baseball's spread is almost always a fixed one and a half runs — the favorite gives them, the underdog gets them. The price does the heavy lifting. “Take the run line if you think they win big.” Let's use this example. The favorite is minus one sixty on the moneyline but minus one and a half runs at plus one twenty on the run line. Win by two or more and the run line pays plus money. Win by exactly one, and the moneyline cashes while the run line loses. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Point Spread, Moneyline, and Puck Line. Every term is explained free at thecoldline.com.
Baseball's version of the point spread, usually -1.5 / +1.5.
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""Take the run line if you think they win big.""
A parlay where all legs are from the same game. Also called SGP.
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What is a same game parlay in sports betting? A parlay where all legs are from the same game. Also called SGP. In plain terms: one game, several picks, one ticket. Every leg still has to win. “Thursday night has arrived — favorite-and-over energy from the newbs on same game parlays.” Let's use this example. A fictional same-game parlay has three legs: 300 or more passing yards, Kansas City minus 3, and over 47.5. All are from one game, and one failed leg loses the ticket. Because SGP legs come from the same game, books price in how connected they are — payouts are set accordingly. Lines move and books differ. Nothing here is a guarantee or a command to bet — it's how the number works. Related lessons: Arb, Backdoor Cover, and Bad Beat. Every term is explained free at thecoldline.com.
A parlay where all legs are from the same game. Also called SGP.
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""SGP: Mahomes 300+ yards, Chiefs -3, and the over.""
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The betting experts - when they bet big, the lines move.
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What is a sharp in sports betting? A professional or highly skilled bettor whose action sportsbooks respect and track. In plain terms: a sharp bets for a living, and the books know it. When sharp money hits a number, the number moves. “Sharps hammered the under early.” Let's use this example. A sharp group hits Kansas City minus six at several books within minutes. The books react — minus six becomes minus six and a half, then seven. The line moved because of WHO bet, not how many. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Square, Steam, and Line Movement. Every term is explained free at thecoldline.com.
A professional or highly skilled bettor whose action sportsbooks respect and track.
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Regular folks betting for fun, not professionals.
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What is a square in sports betting? Rounders opens with the single rule every casual player eventually learns the hard way. Here it is. If you can't spot the sucker in your first half hour at the table... then you ARE the sucker. Guys around here will tell you: you play for a living. It's like any other job. You don't gamble — you grind it out. Your goal is to win one big bet an hour. That's it. Get your money in when you have the best of it, protect it when you don't. Don't give anything away. That's how I've paid my way through half of law school. A true grinder. A casual or recreational bettor. The opposite of a sharp. In plain terms: squares bet for fun — favorites, overs, home teams, big names. Nothing wrong with it, but the books count on it. “Joey Jacoby's a square — whatever he wants to get down, we take.” Let's use this example. On a big Sunday, most casual money lands on the popular favorite and the over. Books know the pattern and price it in — which is why the popular side isn't automatically the right side. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Sharp, Public Money, and Chalk. Every term is explained free at thecoldline.com.
A casual or recreational bettor. The opposite of a sharp.
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What you're putting on the line.
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What is a stake in sports betting? The amount of money risked on a bet. In plain terms: What you're putting on the line. Your stake is the most you can lose on that bet, so decide it before you look at the potential payout. “Based on my bankroll, my max stake is one hundred dollars per play.” Let's use this example. A $100 stake at plus 150 profits $150 and returns $250 total on a win. The stake is the $100 at risk; profit and total return are separate amounts. Lines move and books differ. Nothing here is a guarantee or a command to bet — it's how the number works. Related lessons: Payout, Bankroll, and Unit. Every term is explained free at thecoldline.com.
The amount of money risked on a bet.
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"A $25 stake at +150 returns $62.50 on a win: your $25 back plus $37.50 profit."
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Term quiz
Check yourself: Stake
1.Your stake is…
2.A $25 stake at +150 wins. What comes back to you in total?
3.Which of these is another name for the stake?
When a sportsbook is slow to update a number, the price you see may be stale. It can still move or be rejected before your bet is accepted — a stale line is not guaranteed value and not a command to bet.
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What is a stale line in sports betting? A stale line is a sportsbook price or number that hasn't caught up to newer market-moving information. Check the timestamp, the market, the book, and whether the price is still available when you try to accept it. “I'm so over these dynamic live betting shops — always leaving up stale lines for sharps to take advantage of.” Let's use this example. At 1 PM, most books show Team A minus 5, while one book still displays minus 3 from 12:45. Verify the timestamp and availability; the older minus 3 may be stale. A stale number can move, be rejected, or be limited by house rules. Stale does not mean guaranteed value. Lines move and books differ. Nothing here is a guarantee or a command to bet — it's how the number works. Related lessons: Arbitrage, Chasing, and Closing Line Value. Every term is explained free at thecoldline.com.
A sportsbook price or number that has not yet caught up to newer market-moving information.
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"After confirmed news, most books move a fictional Team A from -3 to -5, while one book still displays -3. That remaining -3 may be stale — check the timestamp, the market and selection, the book, and whether the price is still available when your bet is accepted."
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Term quiz
Check yourself: Stale line
1.A stale line is…
2.After confirmed news, most books move Team A from -3 to -5, but one book still displays -3. That -3 is…
3.Before acting on a possibly stale number, what should you check?
When lots of money comes in fast. "There's steam on the Chiefs!"
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What is steam in sports betting? Heavy, fast betting action that moves lines quickly. In plain terms: a rush of money hits one side, and books react by moving the number fast. “I'm turning off my Don Best alerts — this steam is smoking through my screen on tonight's game. Every Tom, Dick, and Harry has an opinion on it.” Let's use this example. At 1 PM, several generic books show Kansas City minus 6.5. By 1:10, they show minus 7.5. That fast multi-book move is steam; it does not predict the result. Steam tells you where money went, not who will win. Lines move and books differ. Nothing here is a guarantee or a command to bet — it's how the number works. Related lessons: Arb, Backdoor Cover, and Bad Beat. Every term is explained free at thecoldline.com.
Heavy, fast betting action that moves lines quickly.
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A single wager on one game. No parlay, no teaser.
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What is a straight bet in sports betting? A single wager on one game. No parlay, no teaser. In plain terms: one game, one pick, one result. Your ticket doesn't depend on anything else on the board. “Just a straight bet, nothing fancy.” Let's use this example. One hundred dollars on Kansas City minus three at minus one ten. Kansas City covers, the ticket returns one hundred ninety dollars and ninety-one cents. It loses, you lose the hundred — no other game touches it. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Parlay, Stake, and Payout. Every term is explained free at thecoldline.com.
A single wager on one game. No parlay, no teaser.
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""Just a straight bet, nothing fancy.""
A bet with terrible odds where the house edge is huge.
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What is a sucker bet in sports betting? Guys and Dolls. Nathan Detroit needs a thousand dollars fast, and he is offering Sky Masterson a bet that looks too easy to pass up. Sky answers with his father's advice. Here it is. Have we got a bet? On the day when I left home to make my way in the world, my daddy took me to one side. "Son," my daddy says to me, "I am sorry I am not able to bankroll you to a very large start, but not having the necessary lettuce to get you rolling, instead I am going to stake you to some very valuable advice. One of these days in your travels, a guy is going to show you a brand-new deck of cards on which the seal is not yet broken. Then this guy is going to offer to bet you that he can make the jack of spades jump out of this brand-new deck of cards and squirt cider in your ear. But son, you do not accept this bet — because as sure as you stand there, you are going to wind up with an ear full of cider. A bet with terrible odds where the house edge is huge. In plain terms: a sucker bet looks fun and pays terribly — the price is stacked so far against you that the fun IS the product. “That ten-leg parlay is a sucker bet.” Let's use this example. Guys and Dolls said it forever: one day a man will show you a brand-new deck of cards and offer to bet that the jack of spades jumps out and squirts cider in your ear. Do not bet him — or you end up with an ear full of cider. If a bet comes looking for YOU, ask who the sucker is. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Vig, Parlay, and Implied Probability. Every term is explained free at thecoldline.com.
A bet with terrible odds where the house edge is huge.
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""That 10-leg parlay is a sucker bet.""
That nervous feeling watching your bet play out!
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What is sweating in sports betting? Uncut Gems. Howard Ratner is about to put everything he has on Kevin Garnett's game seven — and he is selling KG on the bet, face to face. Then this happened. All the fucking hard work I do, all the fucking ass-kicking and the dues I pay — you're not gonna score on the big ones? On Game 7? Fuck these people, right? That's how you feel. I know you do. So look — let's fucking bet on this. Going at this, going at that — what do you know? — I don't know. I just know. Well, I'll tell you what I know: that's the dumbest fucking bet I ever heard. — I disagree. Anxiously watching a game when you have money on it. In plain terms: sweating is the watch, not the bet — living every possession because your money lives there too. “Where's Joey Jacoby? I heard he's sweating half the board.” Let's use this example. Uncut Gems runs almost entirely on one man sweating a ticket: every rebound, every whistle, every timeout lands like a verdict. If you've ever watched a meaningless timeout like your rent depended on it, you've sweated a bet. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Action, Ticket, and Bad Beat. Every term is explained free at thecoldline.com.
Anxiously watching a game when you have money on it.
A parlay where you get extra points on every leg in exchange for lower payout.
The head start you buy on every leg of a teaser — bigger head start, smaller payout.
Your betting slip. One ticket = one bet.
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What is a ticket in sports betting? A single bet or wager. Your receipt for a placed bet. In plain terms: every bet you place lives on a ticket — the record of the pick, the price, and the stake. If it's not on the ticket, it doesn't exist. “Hold your ticket — that game isn't over.” Let's use this example. A ticket reads: Buffalo plus seven, minus one ten, one hundred dollars. That's the pick, the price you accepted, and the amount at risk. When the game settles, the ticket grades — win, lose, or push. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Stake, Payout, and Push. Every term is explained free at thecoldline.com.
A single bet or wager. Your receipt for a placed bet.
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""I have three tickets on Sunday's games.""
Emotional state where you make bad decisions after losses.
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What is tilt in sports betting? Rounders. Mike McDermott sat down with his whole bankroll against Teddy KGB — and lost every dollar of it on a single hand. Then this happened. I'm done with the game, Knish. I lost everything. I lost my case money. I lost my tuition. Everybody goes bust some time. You'll be back in the game. I'm done. Emotional state where you make bad decisions after losses. In plain terms: tilt is betting with your feelings after a loss — chasing, doubling, forcing action just to feel even. The next bet isn't picked, it's provoked. “I went on tilt and bet the farm on a random game.” Let's use this example. In Rounders, one brutal loss sends a disciplined player straight into the worst decisions of his life — that's tilt in a single scene. The bankroll rule exists precisely for this moment: when the loss starts picking your next bet, stop betting. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Chasing, Bankroll, and Unit. Every term is explained free at thecoldline.com.
Emotional state where you make bad decisions after losses.
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""I went on tilt and bet the farm on a random game.""
The combined score. You bet over or under the number.
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What is a total in sports betting? The combined score. You bet over or under the number. In plain terms: forget who wins — a total only asks how many points go up. The book posts one number; over backers need more, under backers need fewer. What's interesting about betting a total: with the under, you're winning till you lose — and with the over, you're losing till you win. “What's the total in Miami? They're expecting heavy rain — I'm leaning under.” Let's use this example. This one is real: the 2022 AFC Championship closed with the total at 54.5. Cincinnati beat Kansas City 27 to 24 in overtime — 51 combined points. Fifty-one is under fifty-four and a half, so under tickets cashed and over tickets died, even with the game reaching overtime. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Point Spread, Moneyline, and Push. Every term is explained free at thecoldline.com. Before you go: take the mini quiz right here on this page. And when you're ready, build a test parlay, round robin, or if bet in the free guided calculator — it explains exactly what you built, in plain English.
The combined score. You bet over or under the number.
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""The total is 47.5 — I'm going under.""
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People selling "winning picks." Be VERY careful - most are not profitable.
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What is a tout in sports betting? Two for the Money. The tout empire's boss and his can't-miss phenom sit down with a whale who has heard every pitch in the book. Then this happened. And I'm not being cocky. I'm talking straight commerce with you, Mr. Novian. I didn't come down here to bullshit you. Wow. You got steam. There may be a little inside information, maybe. I know these teams better than they know themselves. I'm going 12 for 12 this weekend — and that includes the Monday night parlay. Wow. Should we believe him? What do you think, Walter? I don't believe him. You cannot afford not to. Someone who sells betting picks. Quality varies wildly. In plain terms: a tout sells picks. Some do real work, plenty just sell confidence — and the record in the ad is rarely the record in the ledger. “Don't pay that tout — he's two and eight this week.” Let's use this example. Two for the Money put the tout business on film: a phone room, a hot streak marketed into a brand, and clients paying for certainty that doesn't exist. If the picks were as good as the pitch, the pitch wouldn't be for sale. Ask for receipts, not slogans. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Sharp, Square, and ROI. Every term is explained free at thecoldline.com.
Someone who sells betting picks. Quality varies wildly.
When a good team might not take a bad team seriously and lose or not cover.
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What is a trap game in sports betting? A game where the favorite might overlook an opponent. In plain terms: a big favorite, a small opponent, and a giant matchup waiting the following week. The line looks easy — which is exactly why it might be a trap. “Packers have covered their last four on the road, but this week's Denver, and that altitude's no joke — don't get sucked into that trap game.” Let's use this example. A contender is minus ten against the worst team in the division, with the conference title game looming the next week. Everyone piles on the favorite; the flat, distracted performance shows up instead. Nothing mystical — just attention, priced badly. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Chalk, Public Money, and Fade. Every term is explained free at thecoldline.com.
A game where the favorite might overlook an opponent.
A way to measure bet sizes. If 1 unit = $10, "I bet 2 units" means $20.
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What is a unit in sports betting? A standardized bet size, typically 1-2% of your bankroll. In plain terms: A way to measure bet sizes. If 1 unit = $10, "I bet 2 units" means $20. Keeping every bet near one unit protects your bankroll from big swings. A bettor who says they are up five units means five of their standard bets. “How many units are we up on the season?” Let's use this example. For an illustrative $5,000 bankroll plan, 1 unit equals $100, or 2 percent, and 2 units equal $200. The percentage is an example, not a universal instruction. Lines move and books differ. Nothing here is a guarantee or a command to bet — it's how the number works. Related lessons: Action, Bankroll, and Sportsbook. Every term is explained free at thecoldline.com.
A standardized bet size, typically 1-2% of your bankroll.
Full lesson, quiz & examples →
"Pros track performance in units, not dollars."
Related terms
Short for vigorish. The book's cut on every bet. In loving memory of Vigtoria "Vig" the Goody Girl — a beloved English Bulldog who carried the name with grace.
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What is a vig in sports betting? Vig is short for vigorish — the sportsbook's cut on every bet. In plain terms: it's the built-in fee the book keeps for taking the bet, folded into the price you're offered. It's also called juice, and it's how the book earns money whichever side wins. “It's called vig — it's what keeps the house in business. I don't get down anywhere that has over 10 percent vig, personally.” Let's use this example. If both straight-spread sides are minus 110, each price has a 52.38 percent break-even rate before other costs. The offered prices contain vig; realized book hold depends on prices and accepted action. Lines move and books differ. Nothing here is a guarantee or a command to bet — it's how the number works. Related lessons: Arb, Backdoor Cover, and Bad Beat. Every term is explained free at thecoldline.com.
Short for vigorish. The book's cut on every bet. In loving memory of Vigtoria "Vig" the Goody Girl — a beloved English Bulldog who carried the name with grace.
Full lesson, quiz & examples →
""You're paying the vig either way.""
Related terms
Term quiz
Check yourself: Vig
1.The vig is…
2.At standard -110 odds, you bet $110 to win $100. The extra $10 is…
3.Why does the vig matter to a bettor?
The big fish. People betting thousands or millions.
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What is a whale in sports betting? Casino. Ace Rothstein runs the biggest room in Vegas, and the most dangerous kind of player alive has just checked in upstairs. Here's how Ace tells it. It's a whale like K.K. Ichikawa, who plays $30,000 a hand in baccarat. That's the one you really gotta watch. He plays fast and big, and he has the cash and the credit to turn out your lights. About a year ago, he cleaned out a couple of casinos in the Cayman Islands. Downstairs, he takes us for two million. Upstairs, he takes the free soap, shampoo, and towels. Another billionaire cheapskate — who loves his free rooms, free private jets, and two million of our money. A very large bettor. Someone who bets huge amounts. In plain terms: a whale bets amounts that move the room — six figures like lunch money. Books roll out the red carpet when one surfaces, and they watch every move. “A whale just dropped six figures on the Celtics.” Let's use this example. In the movie Casino, the house flies in a whale, comps him everything, and sweats every hand he plays — because one whale's action can swing a whole week. Sportsbooks treat them the same way: limits rise, phones get answered, and the line pays attention. Lines and prices can differ by sportsbook. Nothing here guarantees a result or tells you to bet. Related lessons: Sharp, Handle, and Bankroll. Every term is explained free at thecoldline.com.
A very large bettor. Someone who bets huge amounts.
📐 Animated diagrams
Visual walkthroughs of spreads, juice, moneylines, and closing line value.
Moneyline flow
American price becomes implied probability and a payout for a given risk.
Odds
−150
favorite
Implied
60%
market price
Risk $150
+$100
if it wins
Odds
+130
underdog
Implied
43.5%
market price
Risk $100
+$130
if it wins
Point spread
Favorite needs more than the number; dog can lose close and still cover.
Must win by 8+
Wins or loses by ≤6
Vig / juice
Both sides' implied probs sum over 100%. The extra is the book's hold.
Overround ≈ 4.8% — that slice is vig
Closing line value
Bet early at −6; closer is −7.5. You beat the market's final number.
+1.5 pts of CLV — you got a better price than the final market.
🧮 Interactive calculators
Vig removal, implied probability, EV, payout, and CLV — tweak the numbers and see the math.
Implied probability
Convert American odds into the probability the market is pricing in (includes vig).
Negative: |odds| / (|odds| + 100). Positive: 100 / (odds + 100).
Vig removal (de-vig)
Strip the hold from a two-way market to get fair probabilities that sum to 100%.
Payout calculator
How much you profit and what the book returns if your ticket cashes.
Expected value (EV)
If your true win rate differs from the price, EV estimates long-run profit per bet.
EV = (p × profit) − ((1 − p) × stake). +EV does not mean this ticket wins — it means the price is good over many bets.
CLV examples
Closing line value: compare the number you got to the final market. Positive CLV is the gold-standard process signal.
Example: bet −110, close −125 → market got shorter on your side → positive CLV (you beat the closer).
Section review
Quick check: Use the tools
1.At −110 with a $110 stake, profit if you win is…
2.Two sides both −110. After vig removal, each fair probability is…
3.CLV calculators compare your price to…
Beginner cards stay plain-English. Advanced entries may include an expandable expert note with formulas and worked examples. Source notes describe methodology; we do not invent academic citations. Last-reviewed dates appear on technical entries when maintained.
American odds ↔ implied probability conversion
Industry-standard mapping: negative odds |o|/(|o|+100); positive odds 100/(o+100). Used throughout sportsbook pricing.
Proportional (multiplicative) de-vig / normalization
Simplest two-way fair-probability method: divide each implied probability by the sum of all implied probabilities so outcomes sum to 100%. Alternative methods (additive, Shin, power) exist; this page documents the proportional method only.
Expected value of a binary wager
EV = (p_win × net profit) − (p_lose × stake). Standard decision-theory expectation for a single-outcome bet.
Sportsbook handle and hold terminology
Industry usage: handle = total amount wagered; hold can mean theoretical margin in odds or realized revenue ÷ handle. Context decides which meaning applies.
The Cold Line home-relative spread edge
Production convention in src/lib/nextdown/edgeMath.ts: edgeRaw = modelSpreadHome − marketSpreadHome; negative favors home value, positive favors away value.
Reference year: 2026
⚡ Quick Reference: Understanding Odds
Negative Odds (-150)
Bet $150 to win $100
Positive Odds (+130)
Bet $100 to win $130
Standard Juice (-110)
Bet $110 to win $100 — the extra $10 is the book's cut
⚠️ Remember: Sports betting should be fun. Only bet what you can afford to lose. Set a budget and stick to it.


