3bet

The 3bet statistic is the percentage of time that a player re-raises (or 3-bets) given the opportunity to do so. The 3bet statistic is useful in two ways, as described below.

First, when a player does 3-bet, the 3bet statistic helps you put them on a hand. For example, if a player's pre-flop 3-bet percentage is 3%, they their range is probably a pair of tens or higher, Ace-Queen suited, or Ace-King suited. If it's 4%, they range would also include Ace-Jack suited or Ace-King off-suit, and so on.

Second, you might have a hand that you would raise only if you were confident you would not be re-raised. If your opponent has a high 3-bet statistic, you might decide to call or fold instead. If an opponent's 3-bet statistic is very high, you can wait for premium hands and let him re-raise for you.

Poker Sleuth actually includes two 3bet statistics: “3bet” and “3Bet vs Open”. They're identical, but can be broken down in different ways. The “3bet” statistic can be broken down by round and position. For example, you can use it to see how frequently a player 3bets on each street. The “3Bet vs Open” statistic applies to pre-flop situations only, but can be broken down by position and the position of the raiser. For example, you can use it to see how frequently a player 3bets from the Big Blind versus a raise from the button.

The 4bet statistic is similar to the 3bet statistic, but measures the percentage of time that a player re-re-raises (or 4-bets) given the opportunity. Due to the infrequency of opportunities for a 4-bet you need a very large number of hands on an opponent before it converges to a meaningful value.