What a three-bet actually is
Preflop, the blinds count as the first bet, an open raise is the second bet, and the first reraise is the three-bet. It can build a pot with a strong hand, attack an opener who folds too often, isolate a weaker player, or deny other hands a cheap flop.
The mistake is treating the three-bet as a declaration that your hand is strong. A good three-bet is part of a range and comes with a plan for the opener, the players behind, a possible four-bet, and the flop.
Answer four questions before raising
If you cannot answer those questions, calling or folding is often cleaner. Three-betting because a hand looks attractive creates expensive spots when the opener continues.
- Who opened, from which position, and how wide is that range likely to be?
- Am I raising for value, as a bluff, or to isolate a specific player?
- Which worse hands can call, and which better hands might fold?
- What is my response if this player four-bets?
Build the range around the opponent
Against a tight early-position open, your value range should be tighter because the opener starts with stronger hands. Against a wider cutoff or button open, you can continue more aggressively. Position matters too: playing the pot in position makes it easier to realize equity and control later streets.
Against players who call too much, favor value and reduce bluffs. Against players who open wide and fold too often, add carefully selected bluffs—often hands with blockers or hands that retain playability when called. Do not bluff the player who has already shown they hate folding.
Use a size that matches the spot
A practical baseline in a single-raised pot is roughly three times the open when you will have position and around four times the open when you will be out of position. Add more when callers are already in the pot. Treat these as starting points, not laws; stack depth, opponent tendencies, and the original raise size matter.
Keep the same sizing with value hands and bluffs in the same situation. If your small three-bet always means a premium and your large three-bet always means a bluff, observant opponents will solve the puzzle for you.
Plan one street ahead
Before the flop comes, picture the most common outcomes. If called, who has the range advantage on high-card, paired, and connected boards? Which flops favor a small continuation bet, and which should you check? You do not need to script every turn and river. You do need a reason for putting extra chips in before the flop.
A useful three-bet sentence: “I am raising this player, from these positions, for this reason—and I know what I will do against a four-bet.”
Common leaks to remove
- Three-betting only premium hands and becoming easy to read.
- Using the same range against every opening position.
- Bluffing opponents who rarely fold.
- Making the reraise too small when out of position.
- Three-betting first and inventing the plan after facing a four-bet.