What Is a 3-Bet in Poker?

A 3-bet is a re-raise before the flop. The blinds count as the first bet, the opening raise is the second, and the re-raise on top of that is the third — hence "3-bet." Despite the name, it does not mean three bets; it means the third raise in the sequence.

Why players 3-bet

A 3-bet does two jobs at once. With strong hands, it builds the pot while you are ahead and isolates the original raiser heads-up. With some weaker hands — the "3-bet bluff" — it pressures the opener to fold hands that would have continued against a flat call, and it disguises your strong hands by mixing them with bluffs so you are not only re-raising the nuts.

A range made only of premium hands is easy to play against: opponents simply fold everything but their best. Adding a measured number of bluffs is what makes a 3-bet hard to face.

When to 3-bet

The main factors are position, the opener's tendencies, and your hand's playability. You can 3-bet a wider range in position than out of position, because acting last afterward is a structural advantage. Against an opener who folds too often, a 3-bet (even with a weak hand) prints. Against one who never folds, tighten up and 3-bet mostly for value.

Good 3-bet bluff candidates are hands that play well when called — suited hands with some connectivity — rather than the worst trash in your range.

Common mistakes

• 3-betting only premiums (too readable).
• 3-betting too large or too small for the situation.
• 3-bet bluffing players who simply call everything.

FAQ

Is a 3-bet always a bluff? No — it is a re-raise that can be for value or as a bluff. Strong play mixes both.

What is a 4-bet? The next re-raise on top of a 3-bet.