♣ Facing a 3-Bet: Fold, Call or 4-Bet

You open A-J offsuit from the cutoff, the button 3-bets to 8 blinds and everyone else folds. It is one of the most common spots in modern poker and one of the most expensive, not because of one big mistake but because of the sum of lukewarm calls. You have three options: fold, call or raise again. All three are correct with some hands. The trouble starts when you always pick the same one.

What calling costs

Start with the maths. With blinds of 0.5 and 1, you opened to 2.5 and got 3-bet to 8. The pot holds your 2.5, your opponent's 8 and the blinds' 1.5: 12 blinds. Calling costs 5.5 more, making the pot 17.5. If the hand went straight to showdown, you would need to win it roughly 31 percent of the time for the call not to lose.

That number is misleading, because it assumes you realise all of your equity. Out of position you will not: you will fold hands that were ahead when your opponent bets, and you will have to act first on every street. That is why a hand with a little more equity than it needs against your opponent's range can be a clear fold out of position and a correct call in position.

Position decides more than the hand

If the 3-bet comes from someone who acts after you, you will play the rest of the hand out of position. That is the most expensive case. If one of the blinds 3-bets after you opened from late position, you will have position on every street, and that widens the range you can call with considerably.

A useful starting rule: out of position, call less and 4-bet a bit more. In position, you can call with more hands that play well after the flop, such as medium pairs and high suited connectors.

Who is 3-betting you

Not all 3-bets are equal. A player who rarely 3-bets has a strong range, and against them hands like A-J or K-Q offsuit lose a lot of value: when you call and flop top pair, you are often behind a better kicker. A player who 3-bets a lot has a wider range with more bluffs. Against them, folding too often hands over the pot, and some hands you would normally fold become calls or 4-bets.

If you do not know your opponent, assume a reasonable range and adjust to what you see. Your notes on that player, or the 3-bet frequency your tracker shows, are worth more than any generic chart.

Which hands call, which 4-bet and which fold

• 4-bet for value: the hands you want to play for stacks, like A-A, K-K and generally Q-Q and A-K. Calling with them out of position lets your opponent see cheap flops with everything that can outdraw you.
• Call: hands that play well in a 3-bet pot without being dominated, like medium pairs, high suited connectors and suited aces with a good kicker, especially in position.
• 4-bet as a bluff: some hands with blockers, like A-5 suited, which reduce your opponent's combinations of A-A and A-K and still have playability if called.
• Fold: offsuit hands that tend to be dominated, like A-T, K-J or Q-J offsuit out of position. They make one pair and lose big pots to better kickers.

Stack depth changes everything

With deep stacks, 150 blinds or more, speculative hands that can make something strong gain value as calls, because the 3-bet pot still leaves plenty behind to win when you hit. With shorter stacks, 40 or 50 blinds, calling makes less sense: the stack-to-pot ratio on the flop gets so low that many hands you would call end up in an awkward all-in. There the decision looks more like 4-bet all-in or fold.

Calling a 3-bet is not a one-street decision. It is signing up to play a big pot for the rest of the hand.

The mistake that costs the most

The most expensive mistake against a 3-bet is not folding too much or calling too much on its own. It is calling with hands that do not know what to do after the flop. A-J offsuit out of position is the classic example: if you pair the ace you do not know whether you are ahead, and if you miss you have to let go. Each of those calls costs little, but it repeats every session.

The flip side of the same mistake is folding every time someone 3-bets. Once your opponent notices, they will 3-bet anything against your opens, and you will keep paying for the open without ever seeing a flop. Defending does not mean calling more; it means having a plan for every part of your range.

How to practise it

Review your recent 3-bet pots where you called out of position. Split them into two groups: the ones that ended in a big pot and the ones you gave up on the flop or turn. If the second group is large and full of offsuit hands, that is your leak: those hands were better folded preflop or turned into 4-bets. Then do the same with the times you folded: if you almost never defend, the player who 3-bets a lot is collecting rent from you.