The 3-bet — the first re-raise after an open — is one of the moves that most impacts win-rate in modern poker. What was once a signal of a monster hand (AA, KK) has become a dynamic tool for applying pressure, building pots, and controlling the game.
This guide covers 3-betting from scratch: the fundamentals of sizing, the difference between linear and polarized ranges, how GTO concepts apply in real situations, and how to adjust your strategy based on opponent type.
The goal is not to memorize ranges. It's to understand the reasoning behind each decision so you can adapt to any table.
1. Fundamentals: Why 3-Bet and How Much?
The 3-bet serves three main purposes:
- ▸Extract value — when you hold premium hands, building the pot preflop strategy maximizes what you get paid.
- ▸Isolate one opponent — instead of playing multi-way, you prefer heads-up where your range advantage is greater.
- ▸Win the pot immediately — through fold equity: many opens don't have the strength to continue against a 3-bet.
Sizing by Position
The 3-bet size doesn't depend on your hand, but on your position. Playing OOP is structurally harder, so the sizing should be larger to discourage calls that would exploit your positional disadvantage post-flop.
In Position (IP)
- • Size: 3x – 3.5x the open
- • Example: open to 3bb → 3-bet to 9-10bb
- • Smaller sizing because you have positional advantage
Out of Position (OOP)
- • Size: 3.5x – 4.5x the open
- • Example: open to 3bb → 3-bet to 11-14bb
- • squeeze play (callers present): +1x per additional caller
💡 Squeeze rule: with one opener and one caller, your base 3-bet goes to 4x IP or 5x OOP. Add 1bb for each extra caller. More players in the pot = more money already in the pot to win.
Beginner Hand Selection
Start with a conservative 4-6% range. Premiums only:
With these hands you almost always have range advantage. No need to think about bluffs yet.
2. Ranges: Linear vs Polarized
As you improve, your 3-bet range adapts to the opponent type. There are two fundamental structures:
Linear Range (Depolarized)
Only value hands, ordered from strongest to weakest. No bluffs.
When: against calling stations or recreational players who call too much.
Logic: if they call with KQ, our AK generates massive value through domination.
Polarized Range
Two extremes: very strong hands (value) + selective bluff hands.
When: against players who fold more than 60-65% to 3-bets.
Logic: fold equity justifies including bluffs you'd otherwise fold.
Ideal Bluffs: Hands with Blockers
Not all bluffs are equal. The best hands to 3-bet as bluffs are low suited Aces:
💡 Why low suited Aces? Holding an Ace cuts in half the combos of AA and AK the opponent can have (they're blockers). Also, if called, you have a hand that can improve to flush, straight, or pair of Aces — you're not a dead bluff.
Range Comparison by Opponent Type
| Opponent Type | Suggested Range | Sizing |
|---|---|---|
| Calling Station | Linear — value only | 5x or more |
| Standard TAG | Polarized — value + A2-A5s | 3x-4x by position |
| Nit (fold>60% to 3-bet) | Wide polarized | 3x-3.5x IP |
| Aggressive (frequent 4-bet) | Premiums only / 5-bet all-in | Standard or jam |
3. Advanced: GTO, SPR and Nut Advantage
SB vs BTN Dynamics — The Special Case
Modern GTO strategy in the Small Blind (SB) facing a Button (BTN) open is radical: nearly 100% 3-bet or fold. No middle ground.
👉 Why? Playing a called pot OOP from the SB is extremely difficult. You arrive at the flop out of position, surrendering initiative, and the BTN has every positional advantage to exploit the rest of the hand. Solvers prefer seizing control with the 3-bet or simply folding.
In practice: if you're in the SB and BTN opens, with most playable hands (suited connectors, medium broadways, suited Aces) you should choose between 3-bet or fold. Calling from SB should be the exception, not the rule.
SPR (Stack-to-Pot Ratio) and Stack Depth
Stack depth completely changes how you play a 3-bet pot:
Deep stacks (100bb+)
- • Use larger sizings, especially OOP
- • Goal: nullify implied odds for set-mining hands (77, 88, 99)
- • If you don't size up enough, opponent calls cheap and can crack your hand by flopping a set
Short stacks (20-40bb)
- • 3-bet sizes are reduced
- • Or become direct jams (all-in)
- • Benefit: simplifies post-flop, maximizes pressure
- • With 25bb effective and AA/KK, the direct jam is generally correct
Nut Advantage in 3-Bet Pots
In a 3-bet pot, the 3-bettor has a very compressed range (AA, KK, QQ, JJ, AK, AQs). This has direct consequences on the flop:
High-card board. The 3-bettor dominates with AA, KK, AK. Can bet at high frequency (70-85% of range).
Low connected board. The caller has more straights, low sets and two pairs. The 3-bettor must check frequently to protect their range.
⚠️ Most common mistake in 3-bet pots: auto-betting every flop because "I raised preflop". On low connected boards that's a serious error — the caller arrived with exactly the hands that crush those boards.
4. Exploitative Adjustments
4.1 When Hero 3-Bets (attacking the opener)
- • Ideal target for polarized 3-bet bluff from CO or BTN
- • They over-fold to aggression — don't want big pots without the nuts
- • Use A2s-A5s, quality suited connectors as bluffs
- • Standard sizing: 3x IP
- • Never bluff. No exceptions.
- • 100% linear value range: AA, KK, QQ, JJ, TT, AK, AQs
- • Significantly larger sizing: 5x or more
- • They don't care about price — they'll call anyway with dominated hands
- • Remove or drastically reduce bluffs from your range
- • Option A: tighten to premiums to "trap" their 4-bet with AA/KK
- • Option B: widen value range and go 5-bet all-in with more hands
- • Avoid the middle ground: 3-betting then folding to 4-bets is the worst option
4.2 When Hero Faces a 3-Bet (defending your open)
- • Their range is purely premium: AA, KK, QQ, AK
- • Fold almost everything — including strong hands like KQ, JJ, TT
- • Only continue with small pairs (22-66) in deep stack situations
- • Goal: flop a set and crack their AA/KK
- • Defend by calling more often, especially in position
- • Use 4-bet bluff with blockers: A2s, A5s (block AA and AK)
- • Goal: force them to fold their own bluffs when facing 5-bets
- • Don't be their passive victim — active defense throws them off balance