♥ The 4-Bet: When to Re-Raise Before the Flop

You open A-Q from the cutoff, the button 3-bets, and the action is back on you. You have three options, and most low-stakes players only use two: fold or call. The third, raising again, is the 4-bet, and it is the most intimidating move before the flop because suddenly there is a lot of money in the middle and very few cards seen. That is exactly why it is worth understanding properly: it is one of the few decisions in poker where a conceptual mistake costs whole stacks, not blinds.

What a 4-bet is, and why the name confuses people

The first bet before the flop is the big blind, which counts as bet one. The opening raise is bet two. The re-raise is the 3-bet. If someone raises over that 3-bet, that is the 4-bet. It sounds like vocabulary, but it helps you think: every level of raising narrows the range of hands that make sense there. Your opening range is wide; your 3-betting range is narrower; your 4-betting range has to be narrower still.

The value 4-bet: hands that want the whole stack

The value side is the easy part. With A-A or K-K you want money in and you are not afraid of getting called. Against most opponents Q-Q and A-K belong here too. The common mistake is not 4-betting these hands, it is flatting the 3-bet with them to disguise them. Calling with aces lets your opponent see a cheap flop with hands that would never have put in another chip, and leaves you playing a big pot on worse terms.

Where it gets hard is with the borderline hands: J-J, 10-10, A-Q. Against an opponent who rarely 3-bets, those hands are behind their range, and 4-betting turns a good hand into one that only gets called by better. Against an opponent who 3-bets a lot, the same hands are ahead and a value 4-bet makes sense. The hand did not change; the opponent did. That is why no fixed chart can tell you what to 4-bet.

The bluff 4-bet: why small aces get used

If you only 4-bet aces and kings, any attentive opponent stops paying you and folds everything except their best hands. For your value 4-bets to get paid, there has to be some chance you are bluffing. That is where bluffs come in.

The most common 4-bet bluffs are suited hands like A-5 or A-4, and the reason is concrete: holding an ace makes it less likely your opponent has A-A or A-K, exactly the hands that would call or shove over you. That is a blocker. Those hands also have some playability after the flop if you do get called. A hand like suited 7-6 plays well as a call, but as a 4-bet bluff it blocks nothing.

• 4-bet bluff against opponents who 3-bet a lot and fold often to a re-raise.
• Do not do it against players who almost never 3-bet: their range is already strong and is not going anywhere.
• Choose hands with blockers, ideally a small suited ace.
• Keep bluffs a minor part of your 4-bet range, never the majority.

How big to go: a size that does not trap you

4-bet sizing depends on position. In position, a raise of a little over double the 3-bet usually does the job. Out of position, go somewhat bigger, because you will play the rest of the hand without information and you want your opponent to pay for the privilege of acting last.

More important than the exact number is the relationship to your stack. If your 4-bet leaves less behind than is already in the pot, you are no longer 4-betting, you are committing. At that point the honest question is whether you want to be all-in with this hand. If the answer is no, a bluff 4-bet at that stack depth is a mistake: your opponent can shove over it, and you are left either calling out of obligation or folding a huge share of your stack.

Before you 4-bet, answer one question: if they go all-in, what do I do? If you do not know, you are not ready to raise.

How to respond when you get 4-bet

The other half of the topic is what to do when you were the one who 3-bet and got raised again. At low stakes, most opponents 4-bet with very few hands and nearly all of them are strong. That makes folding good-but-not-premium hands like J-J or A-Q far more correct than your ego wants to accept. Against an opponent with a history of light 4-bets you can defend more, either by calling in position or by shoving hands that block their best combinations.

The practical summary

• 4-bet A-A and K-K for value every time; Q-Q and A-K nearly every time.
• With J-J, 10-10 and A-Q, decide based on how often that opponent 3-bets, not on the hand.
• Bluff with small suited aces, and only against players who 3-bet a lot.
• Before raising, know what you will do if they shove.

The 4-bet is not a move for showing off. It is a tool for charging players who 3-bet too much and for keeping your strong hands from being exposed. Used with that logic, it stops being scary.