What is a 3-Bet in Poker? When to Use It (and When Not To)
A 3-bet in poker is a re-raise of an opponent's preflop opening raise. The blinds are bet 1, the open is bet 2, and your re-raise is bet 3 — hence '3-bet.' A balanced 3-bet range is roughly 60% value (premium hands like AA, KK, QQ, AKs) and 40% bluff (suited Aces and suited connectors that block their continuing range).
The numbering system explained
Poker bets get sequential names by their order in the betting round:
- •1-bet — the first bet (technically the blinds; in non-blind games, the first opener).
- •2-bet — the open-raise (the first actual non-blind bet).
- •3-bet — the re-raise of the open.
- •4-bet — re-raise of a 3-bet.
- •5-bet — re-raise of a 4-bet (almost always all-in at non-deep stacks).
Value 3-bets vs bluff 3-bets
A balanced modern 3-bet range mixes both:
- •Value 3-bets — hands that beat villain's continuing range when they call. AA, KK, QQ, JJ, AKs, AKo, AQs are universal value-3-bets.
- •Bluff 3-bets (or 'light 3-bets') — hands that have folding equity AND nice playability when called. Suited Aces (A5s, A4s, A3s, A2s) block opponent's AA and AK combos. Suited connectors (87s, 76s) play well postflop when called and fold cleanly to 4-bets.
Sizing your 3-bet
Standard 3-bet sizing depends on position:
- •In position (BTN, CO): ~3x the open. Open $5, 3-bet to $15.
- •Out of position (SB, BB): ~3.5-4x the open. Higher OOP because you need more dead money in the pot to extract value.
- •Cash vs tournament: cash 3-bets are larger relative to opens; tournament 3-bets often smaller because stack-to-pot ratios matter more.
When NOT to 3-bet
Three situations where 3-betting is a leak:
- •3-betting against a calling station OOP. If villain calls every 3-bet, your bluffs lose money — they have no fold equity. Stick to value-only 3-bet ranges against passive opponents.
- •3-betting medium pairs from the SB. TT, JJ, QQ from SB often play better as flat-calls because of OOP playability. 3-betting bloats the pot OOP with hands that aren't strong enough postflop.
- •3-betting with bad blockers. A2s blocks AA more than A8s does. Your bluff combos should be the suited Aces with the best blocker effects, not random offsuit hands.
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Frequently asked
What's the difference between a 3-bet and a re-raise?
Nothing — they mean the same thing. 'Re-raise' is the older general term. '3-bet' became standard online poker terminology because it's more precise (it tells you the exact street position of the bet).
How often should I 3-bet?
At 100bb cash games in 6-max, a balanced 3-bet frequency is about 8-12% of hands when facing a single opener. The exact number depends on position: 3-bet wider from BTN vs a CO open (10-12%), tighter from EP vs UTG opens (4-6%). 3-bet too tight and you become exploitable; 3-bet too wide and you spew chips against value opens.
What's a 'squeeze' 3-bet?
A squeeze is a 3-bet against an open AND one or more callers — you 'squeeze' the original raiser between your aggression and the dead money. Squeeze sizing is larger (4-5x) because you have more dead money to drag in. Profitable when villains have wide flatting ranges they can't continue with.
Should I always 4-bet AA and KK?
Almost always for value. The exception is against a player who only 3-bets premium value hands and will only 4-bet shove with those — there, a flat-call disguises your hand and lets them barrel into you on the flop. At micro-stakes, just 4-bet every time.
How do I respond to a 3-bet?
Three options: (1) 4-bet for value with your strongest opens (QQ+, AKs in position), (2) flat-call with hands that play well postflop (medium pairs, suited Aces, suited Broadway), (3) fold the rest. If you opened wide from late position, fold most of it — most opening ranges aren't strong enough to continue against a 3-bet.
Terms used in this article
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