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Player

Stephen Kolek

KCPBats RThrows RActive

Season 2025 · as of 2025-09-28.

Pitches

1,693

CSW%

24.8%

Whiff%

16.1%

Avg velo

90.4 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 Fastball43325.6%94.0 mph2,177 rpm25.4%13.7%
Sinker40724.0%93.6 mph2,148 rpm25.8%11.7%
Slider27916.5%85.4 mph2,520 rpm23.3%20.0%
Cutter25615.1%90.5 mph2,354 rpm28.5%17.5%
Changeup19611.6%87.5 mph1,468 rpm19.4%22.4%
Sweeper1176.9%82.5 mph2,559 rpm24.8%16.3%
Unknown40.2%0.0%
Curveball10.1%78.6 mph2,411 rpm0.0%
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 / Slider0.6020.21 ft0.36 ft0.86 ft196
Changeup / Cutter0.5140.22 ft0.94 ft1.23 ft196
Four-seam Fastball / Sinker0.4790.26 ft0.26 ft0.47 ft407
Cutter / Sinker0.4400.10 ft0.46 ft0.44 ft256
Changeup / Sweeper0.4110.31 ft1.05 ft0.95 ft117
Changeup / Four-seam Fastball0.4020.29 ft1.58 ft1.25 ft196
Cutter / Slider0.3710.08 ft1.15 ft0.73 ft256
Changeup / Sinker0.3350.28 ft1.35 ft0.82 ft196
Four-seam Fastball / Slider0.3270.35 ft1.81 ft1.05 ft279
Cutter / Four-seam Fastball0.3190.29 ft0.66 ft0.44 ft256
Sinker / Slider0.2700.16 ft1.59 ft0.65 ft279
Four-seam Fastball / Sweeper0.2390.50 ft2.54 ft0.96 ft117
Cutter / Sweeper0.2220.22 ft1.88 ft0.60 ft117
Sinker / Sweeper0.1840.29 ft2.33 ft0.59 ft117
Slider / Sweeper0.1330.15 ft0.77 ft0.14 ft117