A 3-bet is the third bet in a betting sequence, typically a re-raise over an initial raise.
Explanation. In poker, especially in games like No-Limit Texas Hold’em, a 3-bet occurs when one player raises and another re-raises, making it the third bet in the sequence. Preflop, the big blind counts as the first bet, the open-raise is the second, and the re-raise becomes the 3-bet. This move is used to apply pressure, isolate a single opponent, or extract value with premium hands. Players often adjust their ranges based on position and stack sizes, making understanding 3-bet dynamics essential for intermediate and advanced strategy development.