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Player

William Kempner

MIAPBats RThrows RActive

Season 2026 · as of 2026-09-16.

Pitches

199

CSW%

32.2%

Whiff%

30.8%

Avg velo

91.0 mph

Usage
Share of pitches by type.
Velocity
Average release speed by game date.
Movement
Average Savant pfx_x / pfx_z (inches).
Release
Average release side and height (feet).
Pitch types
Compact rates for the filtered window.
PitchPitchesUsageVeloSpinCSW%Whiff%
Four-seam Fastball9648.2%95.5 mph2,395 rpm37.5%36.6%
Sweeper4422.1%81.6 mph2,906 rpm25.0%28.6%
Sinker2914.6%94.0 mph2,252 rpm17.2%9.1%
Cutter2512.6%87.3 mph2,623 rpm48.0%44.4%
Changeup52.5%86.8 mph1,345 rpm0.0%0.0%
Split path
Mean trajectories from release to the plate. Tunnel paths are season-long; date, count, and inning filters stay on the charts above.

No tunnel pairs for this pitcher-season yet. Flight-path readings and 50 pitches per type are required.

Tunnel Score
Pairwise release, decision-point, and plate separation. Open a row to plot that pair.

No pairwise tunnels for this filter.