MP AF

Definition and Context

MP AF is an abbreviation commonly used in poker tracking software and hand analysis. It combines two elements: MP (Middle Position), which refers to the seats at a full-ring table typically ranging from the hijack (two seats to the right of the button) to one seat left of the cutoff, and AF (Aggression Factor), a statistical metric that quantifies a player's frequency of betting and raising versus calling. In general, AF is calculated as (Bets + Raises) / Calls. A higher AF indicates a more aggressive style, while a lower AF suggests passivity.

Usage in Analysis

MP AF is used to evaluate a player's behavior specifically when they are in middle position. For example, a player with a high MP AF (e.g., >3.0) tends to bet or raise often from that position, revealing a tendency to apply pressure with a wide range. Conversely, a low MP AF (e.g., <1.0) suggests a player who frequently calls or checks, often indicating a more passive approach. This stat helps opponents adjust their strategies, such as 3-betting more against aggressive MP players or isolating passive ones.

Strategic Implications

When facing an opponent with a high MP AF, consider that they may be opening a wide range of hands and continuation betting frequently. Defensive actions like check-raising or floating on favorable flops can be effective. Against a low MP AF, you can exploit their passivity by betting larger for value and bluffing less often, as they are more likely to call with marginal hands.

Limitations

MP AF is most meaningful over a significant sample size (e.g., hundreds of hands) to avoid variance. It does not account for timing, bet sizing, or board texture. Combine it with positional VPIP (Voluntarily Put Money In Pot) and PFR (Preflop Raise) for a fuller picture.

Example

A player with MP VPIP of 20%, MP PFR of 15%, and MP AF of 2.5 is moderately aggressive from middle position, typically raising with premium hands and some suited connectors, then betting postflop frequently.