UTG AF

Overview

UTG AF is an aggression metric targeting a specific position (Under the Gun) in poker statistics. AF stands for Aggression Factor. This metric is typically auto-calculated by poker tracking software (such as Hold'em Manager, PokerTracker) and is used to assist in analyzing an opponent's playing style from the UTG position.

Calculation Formula

AF = (Number of Bets + Number of Raises) / (Number of Checks + Number of Calls). Note that actions like folding, all-in, or checking after a check-back are not directly counted. A higher AF value indicates a player tends to be aggressive (betting or raising), while a lower AF value suggests a more passive tendency (checking or calling).

Common Ranges and Interpretation

• AF value < 1: The player is extremely passive from UTG, often inclined to check or call, rarely betting or raising voluntarily.
• AF value = 1~2: Relatively balanced aggression, with both aggressive and passive actions; typical of a standard tight-aggressive or passive style.
• AF value > 2: Strongly aggressive, frequently betting or raising; may indicate a loose-aggressive style or exploitation of positional advantage. Note that AF values should be evaluated alongside other stats (such as VPIP, PFR). A high AF alone may result from a small sample of actions.

Typical Applications

Live or online players can use this metric to adjust counter-strategies:

• Against a UTG player with high AF, consider isolating more frequently with raises when in position, or counter-raising when they bet.
• Against a player with low AF, try making more continuation bets (C-Bet) post-flop, as they are more likely to fold or passively call.

Limitations

AF does not account for bet sizing, and when the sample size is too small (e.g., only a few hands), the data lacks statistical significance. Additionally, AF only reflects the ratio of actions and does not include hand strength information, so it cannot be used alone to determine an opponent's holding strength.