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Player

Stephen Kolek

KCPBats RThrows RActive

Season 2026 · as of 2026-09-16.

Pitches

838

CSW%

24.5%

Whiff%

18.1%

Avg velo

90.0 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 Fastball23728.3%94.2 mph2,242 rpm24.1%16.8%
Sinker18221.7%93.7 mph2,212 rpm19.8%4.5%
Slider13716.3%85.6 mph2,508 rpm33.6%40.3%
Cutter10312.3%90.3 mph2,418 rpm26.2%17.0%
Changeup10011.9%87.1 mph1,489 rpm17.0%16.0%
Sweeper789.3%79.9 mph2,571 rpm28.2%9.1%
Unknown10.1%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.
Tunnel Score
Pairwise release, decision-point, and plate separation. Open a row to plot that pair.
PairTunnel ScoreRelease sepDecision sepPlate sepPair N
Changeup / Slider0.5920.37 ft0.29 ft0.96 ft100
Changeup / Cutter0.4790.16 ft0.95 ft1.01 ft100
Four-seam Fastball / Sinker0.4350.43 ft0.28 ft0.54 ft182
Cutter / Four-seam Fastball0.3830.16 ft0.77 ft0.58 ft103
Changeup / Four-seam Fastball0.3790.29 ft1.69 ft1.21 ft100
Slider / Sweeper0.3470.08 ft1.49 ft0.84 ft78
Four-seam Fastball / Slider0.3460.42 ft1.84 ft1.19 ft137
Sinker / Slider0.3300.12 ft1.62 ft0.86 ft137
Cutter / Sinker0.3140.45 ft0.58 ft0.47 ft103
Cutter / Slider0.3010.40 ft1.07 ft0.63 ft103
Changeup / Sinker0.2620.45 ft1.46 ft0.68 ft100
Changeup / Sweeper0.2260.31 ft1.60 ft0.56 ft78
Cutter / Sweeper0.1660.33 ft2.40 ft0.54 ft78
Four-seam Fastball / Sweeper0.1600.34 ft3.11 ft0.66 ft78
Sinker / Sweeper0.0370.15 ft2.92 ft0.12 ft78