3-bet in poker — when and how to re-raise preflop
The 3-bet (the third preflop bet, after the blind and the initial raise) is one of the most powerful and most misused plays in poker. Too rare, and your game becomes predictable. Too frequent, and you end up in huge pots with marginal hands.
What is a 3-bet?
The sequence: someone raises (opens), you re-raise → that's a 3-bet. The goal can be twofold: take the pot preflop (bluff or semi-bluff) or build a big pot with a very strong hand (value).
A balanced 3-bet rate in 6-max cash game sits between 5% and 10%. Below that, you're too predictable. Above 12%, you often end up in 4-bet pots with no hand.
Why a 3-bet range that's too narrow is a leak
If you only 3-bet with AA, KK, QQ, and AK, your regular opponents will spot it quickly. They'll fold to your 3-bets as soon as they don't have a premium hand, and you'll never win big pots. Worse, when you do 3-bet, everyone knows you have a strong hand.
A balanced 3-bet range includes bluffs — hands with blockers (Ace, King) or the potential to tell a coherent story on the flop.
The two types of 3-bet
Value 3-bet
With your strongest hands (AA, KK, QQ, AK). You build a big pot in a favorable spot. These hands should almost always 3-bet — slow-playing preflop is usually a mistake.
Bluff / polarized 3-bet
With hands that aren't worth a call (too weak to enter, strong enough to bluff). Ideally hands with blockers: A2s, A5s, KQo out of position. These hands can take the pot preflop or play well if called.
Factors that influence the 3-bet decision
Position
In position (button, CO), the 3-bet is stronger — you keep the positional advantage for the rest of the hand. Out of position, be more selective.
Opponent profile
Against a tight player (who folds often to 3-bets), increase your bluff 3-bet frequency. Against a loose-passive player (who calls a lot), 3-bet mostly for value.
Stack sizes
The 3-bet is less relevant with short stacks (< 40BB), where push/fold becomes more optimal.
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FAQ
What 3-bet size should I use?
In position, 2.5x to 3x the initial raise. Out of position, 3x to 4x to make up for the positional disadvantage. Avoid 3-bets that are too small, which give your opponent equity.
Should you 3-bet from the blinds?
Yes, especially from the SB against a CO or BTN steal. A Fold to Steal that's too high from the blinds is exploitable. Defending with 3-bets and not just calls is more effective.
How should I react to a 4-bet?
Facing a 4-bet, the decision depends on your hand and your opponent's profile. With a 3-bet bluff, generally fold. With AA/KK, call or 5-bet depending on the context.
What FlopIQ does on this topic
The FlopIQ tools and analyses that directly address what you just read.
3-Bet Trainer
18 preflop situations: fold, call, or 3-bet, with the correct play explained after every hand.
Train my 3-bet →Range Manager
An editable 13×13 matrix, GTO-inspired standard ranges by position — and your actually-played ranges, extracted from your history and overlaid on the reference.
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