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The Cold Line

The Cold Line© 2026 — THE NUMBER BEFORE THE NUMBER.

Sports betting analytics across live odds, stale-line detection, PLATE READ, NextDown, and long-form research for NFL, NBA, MLB, NHL, college sports, soccer, and the 2026 FIFA World Cup market.

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The Cold Line is an independent sports analytics and information service, not affiliated with, endorsed by, or sponsored by the NFL, NBA, MLB, NHL, NCAA, WNBA, MLS, FIFA, or any league, team, or governing body. All team and league names, logos, and marks are the property of their respective owners and are used for identification and editorial purposes only.

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Betting Terms
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Overlay

Betting Slang

Overlay

What Overlay means in sports betting — explained in plain English.

Definition

When the odds offered are higher than they should be. Free value.

Example

"That +200 is a massive overlay."

Related Betting Slang terms

Arb
Backdoor Cover
Bad Beat
Beard
Blowout
Bookie
Buried
Buy the Half

Browse the full A–Z betting glossary or read the complete betting guide. The Cold Line also publishes a free year-round sports calendar and live odds board — no signup required.