AF from BTN
AF from BTN
AF from BTN is a poker statistic that measures the aggression factor (ratio of bets and raises to calls) specifically when the player is on the button.
Overview
AF (Aggression Factor) from BTN is a positional poker statistic that isolates a player's aggression when they are on the button (BTN). It is calculated as:
AF from BTN = (Bets + Raises) / Calls from the button position.
This metric is useful for analyzing a player's tendency to be aggressive or passive specifically when they have the advantage of acting last post-flop.
Interpretation
- High AF from BTN (> 3): The player is very aggressive on the button, frequently betting or raising rather than calling. This often indicates they are exploiting the positional advantage by applying pressure with a wide range.
- Low AF from BTN (< 1): The player is passive on the button, calling more often than betting/raising. This may suggest they are not maximizing the positional edge or are playing a trappy style.
- Average AF from BTN (1–3): Common for balanced players; they mix aggression and passivity appropriately based on board texture and opponent tendencies.
Usage in Strategy
AF from BTN is a subset of the overall Aggression Factor. When analyzing opponents, this statistic can reveal how they adjust their aggression based on position. For example:
- If an opponent has a high overall AF but low AF from BTN, they may be over-aggressive from early position but passive on the button—a potential leak.
- Conversely, a player with low overall AF but high AF from BTN might be selectively aggressive when in position, which is generally a winning trait.
Limitations
- Sample Size: A meaningful AF from BTN requires a sufficient number of hands (e.g., 100+ hands on the button). Small samples can produce misleading numbers.
- Context: The statistic does not account for betting rounds (preflop, flop, turn, river) separately, nor does it differentiate between bets and raises. Some tracking software offers more granular stats like flop AF from BTN.
- Board Texture and Opponents: AF of any kind ignores the specific board or opponents. A high AF may simply reflect a player hitting strong hands, not necessarily aggressive intent.
Example
In a typical 6-max cash game, a regular might have an AF from BTN of 2.5, indicating they bet/raise 2.5 times for every call when on the button. Against such a player, you might consider check-raising more often to counter their aggression and force them to fold weak holdings.