3-Bet
A 3-bet is the second re-raise preflop, meaning the third aggressive action in a betting sequence. After an open-raise and a re-raise (the 2-bet being the original raise), the 3-bet puts significant pressure on the initial raiser and forces them to defend a narrower range.
The 3-bet is one of the most important weapons in tournament poker. In a 6-Max MTT, understanding when and how to 3-bet separates break-even players from consistent winners. A 3-bet typically sizes between 2.5x and 3.5x the original raise, depending on position and stack depth. From the blinds, you generally size larger because you will be out of position postflop, while in-position 3-bets can be smaller since you retain the positional advantage. There are two main reasons to 3-bet preflop. First, for value: with premium hands like AA, KK, QQ, and AKs, you want to build the pot before the flop. Second, as a bluff: by 3-betting with hands like A5s, A4s, or suited connectors, you apply fold equity against the opener's range and avoid playing marginal hands in bloated pots. The ratio between value 3-bets and bluff 3-bets depends on your position, your opponent's tendencies, and ICM considerations. In a tournament context, 3-betting becomes more nuanced near the bubble or at a final table where the risk of elimination weighs heavily. A balanced 3-betting strategy forces opponents to defend wider, making them uncomfortable and prone to mistakes. Many recreational players either 3-bet too rarely (only with premiums) or too frequently (turning it into a predictable bluff). The key is constructing a 3-bet range that includes the right mix of value hands and bluffs so that opponents cannot easily exploit you.
Concrete example
In RangerPro's BTN vs CO range at 100bb, you can see the 3-bet range includes hands like TT+, AQs+, and AKo for value, while also mixing in bluffs such as A5s and A4s. The total 3-bet frequency from the Button facing a Cutoff open is around 10-12% of all hands.
casino Related opening ranges
link Related terms
help Frequently Asked Questions
When should I 3-bet preflop? expand_more
You should 3-bet preflop when you hold a premium hand for value (AA, KK, QQ, AKs) or when you have a suitable bluff candidate with blockers and playability (like A5s or suited connectors). Position matters greatly: you can 3-bet wider from the Button or Cutoff than from early position. Also consider stack depth, as shorter stacks favor tighter 3-bet ranges.
What is a good 3-bet size in tournaments? expand_more
A standard 3-bet size in MTTs is 2.5x to 3x the original raise when you are in position, and 3x to 3.5x when you are out of position. With shorter stacks (under 25bb), your 3-bet often becomes an all-in shove instead, since a normal-sized 3-bet would commit too large a portion of your stack.
Study your ranges interactively
Sign in to RangerPro to explore ranges with drag-paint, frequency sliders, and the tight/loose modifier.