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MLBPlayer profile/KC
SP#32KCAdvanced data
Stephen Kolek
Starting pitcher
6' 3" · 210 lbs · 29 yo
Live · vs STL
St. Louis Cardinals
STL @ KC
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Statcast fingerprint
Stephen Kolek
MLB percentile · n=373
- xwOBA71
- xBA34
- xSLG63
- Barrel %62
- Hard-hit %51
- Exit velo44
- Whiff %18
- Chase %17
- K %17
- BB %94
Strong walk avoidance (94th pct) — chase (17th pct) the soft spot.
Statcast · 2026 season
The advanced layer
Expected stats, sabermetric context, and rate metrics straight from the MLB Stats API. Each bar is calibrated against league benchmark ranges, not season percentiles — so the position is stable even on a small sample.
PITCHING
Run prevention
8 G · 8 GS · 50.1 IP
Run prevention
ERA2.68
5.502.50
FIP3.69
5.003.00
xFIP3.79
5.003.00
WHIP1.03
1.551.00
Stuff & control
K/96.1
6.012.0
BB/91.8
4.52.0
HR/90.89
1.600.70
K%17.2%
18.0%30.0%
BB%5.1%
11.0%5.0%
Quality of contact
BABIP—
.270.330
GO/AO1.27
0.801.60
Pitch mix
Arsenal
2026 · 737 pitches
PitchUseWhiffRV/100
- 4-Seam Fastball28%19%+1.4
- Sinker22%5%+1.0
- Slider17%46%+1.8
- Changeup13%19%+0.4
- Cutter11%22%+1.7
- Sweeper9%11%-1.4
RV/100 is pitcher-side — negative is a pitch that saved runs.