MP WWSF
MP WWSF
MP WWSF (Middle Position Win When Saw Flop) is a poker statistic that measures the percentage of hands a player wins from the middle position after seeing the flop.
Overview
MP WWSF stands for "Middle Position Win When Saw Flop." It is a derived statistic used in online poker tracking software (e.g., PokerTracker, Hold'em Manager) to assess a player's profitability from the middle position (typically seats 3-5 at a 9-handed table, or seats 2-3 at a 6-handed table) specifically when they see the flop. The stat is calculated as: (Number of hands won from middle position after seeing the flop) / (Total number of hands from middle position where player saw the flop) × 100.
Interpretation
A high MP WWSF (above 50%) generally indicates a player who plays strong hands from middle position and extracts value postflop, often indicating an aggressive or skilled opponent. A low MP WWSF (below 40%) may suggest a player who sees too many flops with weak holdings or fails to realize equity. Typical recreational players have WWSF around 40-45%, while solid regulars can achieve 48-52% from early and middle positions.
Context in HUDs
MP WWSF is less common than overall WWSF, but position-specific stats help identify tendencies. For example, a player with high MP WWSF but low overall WWSF might be overly tight or passive from other positions. Combining MP WWSF with VPIP (Voluntarily Put $ In Pot) and PFR (Preflop Raise) from middle position gives a clearer picture of preflop ranges and postflop skill. A player with a high MP VPIP (>25%) and high MP WWSF (>50%) is likely a strong LAG (Loose-Aggressive) opponent; low MP VPIP and high MP WWSF suggests a tight, value-oriented player.
Strategy Implications
Against a high MP WWSF opponent, you should be cautious when they call or raise from middle position, as they are likely to have strong holdings and play well postflop. Against a low MP WWSF player, you can exploit them by c-betting more frequently on flops that miss their wide ranges, and by value betting thinner when they call down. Note that sample size matters: MP WWSF becomes reliable after several hundred hands per position.
Limitations
Like all WWSF stats, MP WWSF does not account for preflop action beyond seeing the flop (e.g., it includes hands where the player checked the flop and later won). It also conflates wins via showdown and without showdown. Therefore, it should be used alongside WTSD (Went to Showdown) and W$SD (Won Money at Showdown) for deeper analysis.