WWSF from BB

Overview

WWSF from BB (Win When Saw Flop from Big Blind) is a poker tracking statistic that measures how often a player wins the pot after seeing the flop from the big blind position. It is commonly used in online poker HUDs (Heads-Up Displays) and database analysis software to assess a player's post-flop skill and profitability from the big blind.

Calculation

WWSF from BB is calculated as:

[WWSF](/term/wwsf) from BB = (Number of pots won from the big blind when flop seen) / (Total number of times flop seen from the big blind) × 100%

Only hands where the player is in the big blind and sees the flop (including checks, calls, or raises preflop) are counted. It excludes hands where the player folds preflop or the hand ends before the flop.

Interpretation

• High WWSF (above 50%): Indicates a player who wins a large share of pots after seeing the flop from the big blind. This often suggests aggressive post-flop play, good hand reading, or a tendency to defend the big blind too loosely and then bluff or value-bet effectively. However, an extremely high WWSF (e.g., >65%) might indicate a player who is overly aggressive or runs hot.
• Low WWSF (below 40%): Suggests a player who loses money when defending the big blind post-flop. This could be due to defending too wide with weak hands, poor post-flop play, or being overly passive. A very low WWSF (e.g., <30%) indicates a significant leak from the big blind.
• Average: Typical values for a solid winning player range from about 42% to 50% in 6-max cash games. The exact average depends on game type, stakes, and opponent tendencies.

Usage

WWSF from BB is particularly useful because the big blind is a mandatory investment, and defending it profitably is crucial for a winning player. By comparing a player's WWSF from BB to their overall WWSF (from all positions), you can identify if they are particularly weak or strong when out of position post-flop.

Example (Typical Scenario)

A player with a high VPIP (Voluntarily Put Money In Pot) from the big blind and a low WWSF from BB likely defends too many hands preflop and fails to realize equity post-flop. Conversely, a player with a low VPIP but high WWSF may be folding too much preflop but playing well when they do see the flop.

Limitations

• WWSF from BB does not account for the size of the pot won; winning many small pots can inflate the statistic while losing big pots may mask poor play.
• Sample size matters: This statistic stabilizes only after several hundred hands from the big blind (typically 1,000+ big blind hands for moderate reliability).
• It does not differentiate between showdown and non-showdown wins. A player who wins often without showdown (e.g., via frequent continuation bets) will have a higher WWSF from BB than one who goes to showdown frequently.

Related Terms

• WWSF (overall): Win When Saw Flop from all positions.
• W$SD (Won $ at Showdown): Percentage of times a player wins when they see a showdown.
• WTSD (Went to Showdown): Frequency of seeing a showdown after seeing the flop.
• Big Blind Win Rate: A direct measure of profit from the big blind, often expressed in bb/100 hands.