SwStr%
Swinging-strike rate — share of all pitches the hitter swings through.
What SwStr% means
Pitch-level rate (vs whiff% which is swing-level). Pitcher league average ~11%; ≥ 14% is elite.
What counts as a good SwStr%
Higher is better — roughly .090 is poor, .110 average, .130 good, and .150 or better elite.
Also written
swstr_rate · swinging_strike_pct