CSW%
Called strikes plus whiffs, as a share of pitches thrown against batters.
Agreement with Savant
Not checked against Savant.
Shown for: pitcher.
Formula
(sum(called_strikes) + sum(whiffs))::real / NULLIF(sum(pitches), 0)
A foul tip is a whiff. An automatic strike isn’t a called strike, and automatic balls and strikes aren’t pitches.
Inputs
pitches.descriptionplate_appearances.called_strikesplate_appearances.whiffsplate_appearances.pitches
Version history
- 2026-09-27: Added to the Explorer. Called strikes match Savant’s count for every qualified pitcher of 2025, but Savant publishes no CSW% to check the rate against.