Poker Stats Guide — VPIP, PFR, 3-Bet & AF Explained | PokerJudge
What every poker stat means and the sample size it needs: VPIP, PFR, 3-bet, fold to c-bet, WTSD and aggression factor, with the ranges that signal an exploitable leak.
How to Read Poker HUD Statistics
A HUD percentage is a sample estimate, not a permanent label. Check the denominator, position, game format and number of opportunities before changing strategy. Rare events such as four-bets need far more hands than VPIP or PFR.
VPIP — Voluntarily Put Money in the Pot
Voluntary preflop investments divided by hands dealt. Compare it with PFR to identify passive calling.
PFR — Preflop Raise
Hands raised preflop divided by hands dealt. A large VPIP–PFR gap usually indicates too much limping or cold calling.
3-Bet — Preflop Re-Raise
Three-bets divided by opportunities to three-bet. Read it by position and sample size, not as one isolated number.
Fold to 3-Bet — Fold After Opening
Folds to a three-bet divided by times facing one after raising. Very high values invite wider light three-bets.
4-Bet — Raise Against a 3-Bet
Four-bets divided by four-bet opportunities. This stat converges slowly because the situation occurs infrequently.
RFI — Raise First In
Open raises when action folds to the player. Position-specific RFI is more useful than a single table-wide average.
Attempt to Steal — Late-Position Open
Opens from cutoff, button or small blind when earlier players fold. Blind defense and stack depth change the correct response.
C-Bet Flop — Flop Continuation Bet
Flop bets made after taking the preflop initiative. Board texture and range advantage matter more than a raw population average.
Fold to C-Bet — Fold Facing Flop C-Bet
Folds divided by opportunities facing a flop continuation bet. Split single-raised, three-bet and multiway pots before exploiting it.
Turn C-Bet — Second Barrel Frequency
Turn bets after betting the flop. The gap between flop and turn frequencies reveals one-and-done betting patterns.
AF — Aggression Factor
Bets plus raises divided by calls. AF can look extreme over small samples or when a player rarely reaches later streets.
AFq — Aggression Frequency
Aggressive actions divided by all relevant actions. Unlike AF, it includes folds in the denominator and answers a different question.
WTSD — Went to Showdown
Showdowns reached after seeing a flop. Combine WTSD with W$SD to distinguish disciplined bluff-catching from over-calling.
W$SD — Won Money at Showdown
Showdowns won divided by showdowns reached. A high number can reflect tight river selection rather than superior card luck.
WWSF — Won When Saw Flop
Pots won after seeing a flop, whether or not they reached showdown. It helps describe postflop initiative and surrender frequency.
Check-Raise — Raise After Checking
Check-raises divided by opportunities to check-raise. Separate flop, turn and river because value and bluff composition changes sharply.