Swing% / Swing%

Batter

Swings divided by pitches. Bunt attempts count as swings, matching Savant.

Agreement with Savant

Checked nightly. Agreement tolerance: ±0.

Pitcher

Swings induced divided by pitches thrown. Bunt attempts count as swings, matching Savant.

Agreement with Savant

Checked nightly. Agreement tolerance: ±0.

Shown for: batter and pitcher.

Formula

sum(swings)::real / NULLIF(sum(pitches), 0) — swings over pitches. Bunt attempts count as swings, matching Savant.

Inputs

pitches.description
plate_appearances.swings
plate_appearances.pitches

Era caveats

Three tracking systems across the seasons shown

Rows carry a tracking_era of trackman, hawkeye or hawkeye_bat (migration 001). The systems differ in what they measure and how precisely, so long spans cross a measurement boundary as well as a rule one.

Version history

2026-09-02 — Added with the pitch-owner spine, built from description for the same reason whiff_pct is: pitches.is_bunt marks bunts in play only. (runbook §52)