Fold to 3-Bet from BTN

Overview

Fold to 3-Bet from BTN (often abbreviated as Fold to 3B BTN or F3B BTN) is a common HUD (Heads-Up Display) statistic used in online poker, particularly in no-limit hold'em. It tracks the frequency with which a player folds their opening raise when confronted with a 3-bet, specifically from the button position (BTN). This stat is typically displayed as a percentage, calculated over a sample of opportunities.

Calculation

Fold to 3-Bet from BTN = (Number of times the player folds to a 3-bet from BTN) / (Total opportunities where the player opened from BTN and faced a 3-bet) × 100%. A high percentage indicates the player often gives up their opening raise to a re-raise, while a low percentage suggests they frequently call or 4-bet.

Strategic Implications

This statistic is crucial for understanding a player's post-flop tendencies from late position. The button is considered the most profitable position, and an aggressive 3-betting strategy can exploit players who fold too often. Conversely, a low fold-to-3-bet indicates a player who is willing to defend their opens, making them tougher to 3-bet light.

• High Fold to 3-Bet (e.g., >60%): The player is exploitable; opponents can profit by 3-betting a wide range from the blinds or other positions. Against such players, you can 3-bet more frequently with a wider range, including marginal hands.
• Low Fold to 3-Bet (e.g., <40%): The player defends aggressively; they may 4-bet or call often, making it less profitable to 3-bet them without a strong hand. In this case, tighten your 3-betting range and consider using a more balanced strategy.

Factors Influencing the Stat

Several variables can affect the accuracy and interpretation of this stat:

• Sample size: Small samples (e.g., <50 opportunities) can be noisy. Look for at least 100+ opportunities for reliability.
• Stack sizes: In tournaments or cash games with varying stack depths, players may adjust their defense frequency. For example, shorter stacks may have a higher fold to 3-bet due to ICM pressure.
• Opponent tendencies: If the 3-bettor is known to be tight, the player may fold more; if the 3-bettor is loose, they might defend wider.
• Table dynamics: Game flow, image, and recent hands can influence decisions.

Usage in Hand Analysis

When reviewing hands, combine this stat with other metrics like Attempt to Steal, Raise First In, and Fold to CBet to build a complete profile. For example, a player with a high Attempt to Steal (40%+) but also a high Fold to 3-Bet (60%+) is frequently stealing but folding to resistance—a prime target for 3-betting from the blinds.

Limitations

No single stat tells the whole story. The Fold to 3-Bet from BTN does not account for the player's holding, the sizing of the 3-bet, or the opponent's range. It is also position-specific: the same player may have a different fold frequency when out of position. Use it as a guideline, not an absolute rule.

Conclusion

Fold to 3-Bet from BTN is a key statistic for exploiting opponents in late position. By understanding and adjusting to this stat, you can improve your 3-betting strategy and overall profitability.