3-Betting Preflop: When, Why, and How Much
A 3-bet is the first re-raise before the flop: someone opens, you raise them. It is the most reliable way to grow pots with your best hands, punish loose openers, and stop yourself from becoming the player everyone raises with impunity. Most low-stakes players 3-bet far too little — here is the framework.
Take a seat at a Hold'em table →What a 3-bet actually is
The naming trips people up. The big blind is counted as the first bet, the open raise is the second, so the first re-raise is the third bet — the 3-bet. If the original raiser re-raises again, that is a 4-bet. Preflop 3-betting matters because it shapes everything that follows: it builds a bigger pot while your hand is likely best, it defines ranges early, and it frequently ends the hand right there by folding out the opener. A player who only ever calls raises — a habit called flatting everything — lets opponents see cheap flops with total control of the pot size. The 3-bet takes that control back. It also carries information value in both directions: your re-raise instantly narrows what opponents can profitably continue with, while their response — fold, flat, or 4-bet — tells you more about their holding than any physical tell ever could.
Linear vs polarized ranges, in plain language
A linear (or merged) 3-bet range is simply your best hands in order: AA, KK, QQ, AK, AQ, JJ, TT and so on down to a cutoff. You use it when opponents call 3-bets too often — every hand in the range is happy to be called because it dominates their calling range. A polarized range splits into two clusters: premium value hands at the top, plus bluff hands that are not quite good enough to call the open — think suited aces like A5s or suited connectors — while the medium hands like AJ or 99 flat-call instead. You use polarization when opponents respond to 3-bets by folding or 4-betting, because your bluffs profit from the folds and your medium hands avoid getting blown off their equity. Against loose recreational tables, lean linear; against tight, fold-prone regs, polarize.
Value 3-bets and light 3-bets
The value case is simple: with QQ+ and AK you want more money in preflop against an opener's wide range, and just calling invites multiway pots that crush big pairs. The light 3-bet — re-raising with a hand that is not premium — is where the real edge lives. Good candidates hold blockers: A5 suited contains an ace, halving the chance the opener has AA or AK, while remaining playable when called with straight and flush potential. Position sweetens it: 3-betting from the button against a cutoff open means you play the whole hand in position with the betting lead. The goal of a light 3-bet is not to get called — it is to win the pot immediately a healthy percentage of the time while keeping your overall 3-bet range unreadable. One caution: pick opponents who can actually fold. Light 3-betting a player who calls everything converts your bluff into a value bet with ace-high, which is not a trade you want.
Sizing: 3x in position, bigger out of position
Sizing is more formula than art. In position, make it about three times the open: facing a 2.5 big-blind raise, 3-bet to 7.5 to 8 big blinds. Out of position — typically from the blinds — go larger, around four times the open, because your positional disadvantage means you want fewer flops and more immediate folds. Add roughly one extra open-size for every caller or limper already in the pot, since they are getting better odds to come along. Too-small 3-bets are the classic leak: they price in exactly the speculative hands that outflop you, and they fail the core test of a 3-bet, which is putting the opener to a genuinely expensive decision. Keep your sizing identical for value hands and bluffs from the same position — any sizing tell between the two is free money for observant opponents, and consistency costs you nothing.
Responding to 3-bets — and the flatting leak
When you are the one facing a 3-bet, the decision tree is fold, call, or 4-bet. Fold the bottom of your opening range without regret — open-folding to 3-bets is normal, not weak. Call with hands that play well postflop in position, like suited broadways and pairs. 4-bet a range mirroring the 3-bettor's logic: premiums for value plus a few blocker bluffs like A5s. The leak to kill in your own game is calling 3-bets out of position with dominated hands like KJ offsuit. And the broader flatting disease — calling every open preflop because folding feels like quitting and raising feels like risk — leaks money structurally: you play bloated multiway pots, with capped ranges, without initiative, and every strong player at the table knows it.
3-betting loose online tables and AI opponents
Low-stakes online games, including the live tables on Llamabet, tend to feature loose opens and looser calls. The adjustment is mechanical: widen your linear value range (add TT, 99, AQ, AJs), shrink your pure-bluff 3-bets, and size up, because loose callers do not fold to normal sizings. Against Llamabet's AI bot tables the same discipline applies — the bots play calibrated ranges, so undersized 3-bets and out-of-position flats get punished just as they would against humans. Every hand is chained on-chain and verifiable at /poker/verify, and your per-hand history is the study tool: filter your 3-bet pots, check whether you won them preflop, on the flop, or at showdown, and rebalance from evidence rather than feel.
Frequently asked questions
What hands should I 3-bet preflop?
Always 3-bet the premiums — QQ+, AK — for value. Beyond that, either extend linearly down through TT, AQ and AJs against players who call too much, or add polarized bluffs like A5s and suited connectors against players who fold or 4-bet. Position and the opener's range decide how wide you go.
How much should a 3-bet be?
About three times the original raise when you are in position and roughly four times when out of position, adding about one open-size per caller already in the pot. The goal is to deny the opener a cheap, easy call while keeping your own risk proportional.
Is it bad to just call raises instead of 3-betting?
Calling has its place with medium hands that flop well, but never 3-betting is a real leak: you surrender initiative, play more multiway pots, and let opponents open freely against you. A balanced strategy 3-bets both premiums and selected bluffs so your raises stay unreadable.