PREFLOP · FIELD NOTE
The Button 3-Bet Your Cutoff Open. How Wide Should You Defend?
How to choose calls, 4-bets, and folds after the button 3-bets your cutoff open—and avoid defending just because you raised first.
You open the cutoff and the button 3-bets. It is annoying because you know the button can be wide, but you will also be out of position for the rest of the hand. This is where pride quietly turns marginal opens into expensive calls.
The short answer
Fold the weakest hands you opened. Call hands that can play well while acting first after the flop. 4-bet your strongest hands plus a few bluffs that block aces or kings. The larger the 3-bet, the fewer hands you should call.
Three useful words
A 3-bet is a reraise before the flop. Out of position means you act first on the flop, turn, and river. Domination is the trouble you face when both players pair the same rank but your kicker is worse. A 4-bet is raising again after the 3-bet.
Two quick examples
- Reasonable: You open the cutoff with
A♥ Q♥and the button 3-bets to 8 big blinds (8bb). Calling keeps worse aces in; a 4-bet to about 20–22bb can also work because you block strong continues and still have a clear response to a shove. - Not reasonable: You call
A♣ 8♦just because the button may be bluffing. When you both pair an ace, you are often dominated and must play the whole hand out of position.
Practice this spot first
Ace-queen suited can call or 4-bet. Pick one before opening the practice hand. If you call, explain which flops you can continue on. If you 4-bet, decide what you will do against a shove.
Defend a range, not your ego
Making the first raise does not obligate you to continue. The weakest offsuit hands often fold. Medium pairs, suited hands such as king-queen, and strong suited connectors can call when the price is good, although acting first after the flop still costs them. Premium hands and a few hands containing an ace or king can raise again.
Track the percentage of your opening range that continues. If too little survives, a button can 3-bet any two cards. If too much survives, you enter large out-of-position pots with dominated hands.
Let size reshape the response
A 7.5bb 3-bet after your 2.5bb open asks you to call 5bb and creates a pot around 16.5bb if you continue. A 10bb 3-bet asks for another 7.5bb and creates a pot around 21.5bb. The larger size costs more now and leaves less room after the flop, so hands such as 9♠ 8♠ and A♣ J♦ should fold more often. Do not apply a chart built for 7.5bb against a 10bb size.
At shorter stacks, there is less room to call and play later streets, so more decisions become all-in or fold. At deeper stacks, suited hands can win bigger pots, but dominated top pairs can also lose more.
Choose value 4-bets before adding bluffs
Start with hands that are happy when the button calls or shoves. Add bluffs that make aces or kings less likely and do not lose a good calling option. Suited ace-x often fits because it blocks pocket aces and ace-king while still being able to make a flush or straight.
Ace-queen suited is different because calling may already be profitable. Use both calls and 4-bets rather than turning every copy of the hand into a bluff.
Prepare for out-of-position postflop play
The cutoff checks frequently after calling. Say you call J♥ T♥ and the flop is 9♥ 8♣ 3♦: you have a strong draw and can continue against a bet or sometimes check-raise. On A♣ K♦ 4♠, the button owns more ace-king and premium pairs, so the same jack-ten is usually a simple check-fold. Picture those flops before paying for a marginal preflop call.
Rule of thumb: Before continuing, ask three questions: Can this hand play well after a call? Can it handle a shove after a 4-bet? Is folding cheaper than either mistake?
Keep studying
See the aggressor’s side in the button-versus-cutoff strategy tree, then work through how pocket jacks choose between calling and 4-betting. If the action escalates again, use the value-first method for constructing 5-bet shoves.