Gambling terms, explained straight

Poker

Bad beat vs cooler

A bad beat is when a hand that was a heavy favourite loses to a weaker hand that got lucky; a cooler is when a very strong hand loses to an even stronger one, often leaving the loser with no way to fold.

Bad beat
A strong hand loses to a weaker hand that improves later.
Cooler
Both players have very strong hands; the loser cannot avoid losing much.

Key points

  • A bad beat occurs when a hand that was ahead at the point of decision loses by the river, often after the opponent made a mathematically poor call that later improved.1
  • A cooler is a narrower case where both players hold very strong hands and the loser usually cannot avoid losing a large pot regardless of play.12
  • The key difference: a bad beat involves a weaker hand unexpectedly winning, while a cooler involves a very strong hand losing to an even stronger one.12

Where this term is used

Sources

  1. Bad beat - Wikipedia en.wikipedia.org Defines bad beat and cooler, explains how they occur.
  2. Glossary of poker terms - Wikipedia en.wikipedia.org Provides glossary definitions and distinguishes cooler from bad beat.

Sources are drawn from regulators, universities and published research, and each one is labelled with what it actually is — a preprint is not called a paper. Bookmaker and affiliate pages are never cited here, because a page that sells betting is not a neutral authority on it.