WTSD from SB

Concept and Significance

WTSD from SB is a positional statistic in poker tracking software (such as Hold'em Manager or PokerTracker) that measures how often a player goes to showdown when they are in the small blind. WTSD stands for "Went to Showdown," and "from SB" specifies the small blind position. This stat indicates the frequency with which a player, when in the small blind, stays in the pot from preflop to the river and ultimately shows their hand.

Calculation Method

Typical calculation formula:

• Numerator: Number of hands played from the small blind that went to showdown (including both winning and losing showdown hands).
• Denominator: Total number of hands played from the small blind where the player had an opportunity to see the showdown (usually excluding hands where the player folded preflop, though exact definitions may vary slightly between software). Typically, only hands where action continued postflop are included.

Example: If a player plays 100 hands from the small blind and 20 of those go to showdown, the stat is 20%.

Typical Values

• Tight-Aggressive (TAG) players: Approximately 25%–35%
• Loose-Aggressive (LAG) players: Approximately 30%–45%
• Very tight players (Nits): May be below 25%

A high value may indicate that the player frequently calls or raises from the small blind and then goes to showdown, possibly lacking the ability to fold. A low value may suggest the player folds often postflop or slow-plays strong hands but rarely shows down (unlikely).

Strategic Implications

• Too loose defensively: If WTSD from SB is too high (e.g., above 45%), the player has difficulty folding after calling or raising from the small blind. Opponents can exploit this with larger continuation bets or multiple barrels.
• Too much folding: If the stat is too low (e.g., below 20%), the player frequently folds when faced with aggression. Opponents can exploit this by c-betting or bluffing with a wider range.
• Positional factor: The small blind is the worst position postflop (acting first on every street after the big blind). Therefore, it is generally recommended to play tighter from the small blind and reduce the frequency of going to showdown. A reasonable WTSD from SB should be somewhat lower than the overall WTSD.

Limitations

• Sample size requirement: At least several hundred hands from the small blind are needed for the stat to be meaningful.
• Highly correlated with preflop range: If a player only enters pots from the small blind with strong hands, a high showdown rate is natural and does not necessarily indicate poor folding ability.
• Should not be used in isolation: It should be evaluated together with WTSD from the big blind, overall WTSD, and win rate at showdown (W$SD) for a complete picture.