Definition of odds
Pot odds are a ratio of the pot’s compared to the size of the bet you are facing: If there’s $20 in the pot and you have to call a four-dollar bet, the pot odds at this point are 5-to-1. If you flopped a four-flush, the odds against making your hand by the river are only 1.86-to-1 against you, and because the pot odds are larger than the odds against completing your hand, it pays to call this bet.
