SB Fold to 4-Bet

SB Fold to 4-Bet

SB Fold to 4-Bet is a poker statistic that measures how often the small blind (SB) folds when facing a 4-bet after they have made a 3-bet. It is typically calculated as a percentage: number of folds to 4-bet divided by total opportunities to face a 4-bet after 3-betting. This stat is commonly used in online poker tracking software like PokerTracker or Hold'em Manager to analyze opponent tendencies and adjust strategy.

Usage in Analysis

A high SB Fold to 4-Bet (e.g., above 70%) suggests that the SB is folding too often to 4-bets, making their 3-betting range exploitable. Opponents can profit by 4-betting light (with weaker hands) against this player, knowing they will fold frequently. Conversely, a low SB Fold to 4-Bet (e.g., below 40%) indicates the SB is calling or 5-betting often, meaning opponents should 4-bet with a strong value range and avoid light 4-bets.

Typical Ranges and Context

In modern no-limit hold'em games, especially at high stakes, the SB's 3-bet range is often wider than the BB's due to positional disadvantage. However, facing a 4-bet, the SB must defend sufficiently to avoid being exploited. GTO (Game Theory Optimal) ranges suggest that the SB should fold roughly 40-50% of the time to a standard 4-bet, depending on stack depths and bet sizes. However, actual player tendencies vary widely.

Adjustments

• Against a high SB Fold to 4-Bet: Increase your 4-bet bluff frequency, especially with hands that have good blockers (e.g., A5s, KQo). You can also 4-bet smaller to induce folds.
• Against a low SB Fold to 4-Bet: Tighten your 4-betting range to value-heavy hands (QQ+, AK) and avoid bluffing. Consider calling more 3-bets instead of 4-betting.

Limitations

This stat is most meaningful with a large sample size (hundreds of opportunities). In small samples, variance can distort the number. Also, it does not differentiate between stack depths or bet sizing, which significantly affect correct folding frequencies. Always consider other stats like SB 3-Bet and overall aggression.

Summary

SB Fold to 4-Bet is a key exploitative tool for adjusting your 4-betting strategy. By identifying opponents who fold too often or not enough, you can increase your win rate in blind vs. blind and late position confrontations.