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Player

Zack Kelly

BOSPBats RThrows RActive

Season 2026 · as of 2026-09-16.

Pitches

283

CSW%

24.7%

Whiff%

18.7%

Avg velo

90.1 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%
Cutter12443.8%90.6 mph2,476 rpm29.8%19.2%
Sweeper6221.9%81.6 mph2,615 rpm27.4%28.6%
Sinker4817.0%95.9 mph2,183 rpm20.8%10.5%
Four-seam Fastball3913.8%96.1 mph2,190 rpm12.8%9.1%
Changeup103.5%83.6 mph2,080 rpm10.0%50.0%
Split path
Mean trajectories from release to the plate. Tunnel paths are season-long; date, count, and inning filters stay on the charts above.
Tunnel Score
Pairwise release, decision-point, and plate separation. Open a row to plot that pair.
PairTunnel ScoreRelease sepDecision sepPlate sepPair N
Cutter / Sweeper0.2020.17 ft2.02 ft0.56 ft62