Season pitcher profile · 2026
Stephen Kolek
KC · 10 GS · 54.0 IP · 4-3
Season line through September 27, 2026
ERA4.50
WHIP1.24
K34
K %15.2%
BB %5.4%
K-BB %9.8%
HR8
MalliScore
Average outing
43.30–100
MLB median start 44.4Elite starts 3
Last 537.2
Best63.6
Dominance46.7
Run prevention48.8
MalliScore by start
10 qualified starts
Move across the chart for each outing.
Start5-start averageMLB median start
Pitch mix
Usage by outing
FFSISLFCCH
Batter handedness
Results by side
vs RHB.316 xwOBA
10.1% K7.1% BB4 HR
99 PA
vs LHB.292 xwOBA
19.0% K4.0% BB4 HR
126 PA
Arsenal
Shape and results by pitch
Season-to-date Statcast
| Pitch | Use | Velo | Spin | H break | V break | CSW | Chase | Whiff | xwOBA | Hard hit |
|---|---|---|---|---|---|---|---|---|---|---|
| FF4-Seam Fastball | 28.4% 238 | 94.2 | 2,241 | -6.4" | 13.2" | 24.8% | 21.1% | 18.4% | .287 | 23.7% |
| SISinker | 21.7% 182 | 93.7 | 2,212 | -14.8" | 5.0" | 20.3% | 22.9% | 5.6% | .315 | 48.1% |
| SLSlider | 16.0% 134 | 85.6 | 2,518 | 3.2" | -0.4" | 35.1% | 45.6% | 42.7% | .279 | 44.0% |
| FCCutter | 12.4% 104 | 90.2 | 2,424 | 1.9" | 6.3" | 27.9% | 21.4% | 20.8% | .229 | 37.5% |
| CHChangeup | 12.1% 101 | 87.1 | 1,485 | -11.9" | 2.6" | 17.8% | 34.4% | 17.6% | .345 | 24.0% |
| STSweeper | 9.3% 78 | 79.9 | 2,571 | 14.7" | -5.4" | 28.2% | 7.3% | 9.1% | .360 | 43.8% |
Velocity
FF by outing
FF season average 94.3 mph
Recent starts
Game log
Most recent 12
| Date | Opp | IP | ER | K | BB | Malli |
|---|---|---|---|---|---|---|
| Jul 2 | TB | 2.0 | 3 | 0 | 1 | 26.9 |
| Jun 21 | STL | 1.2 | 9 | 0 | 1 | 7.7 |
| Jun 14 | HOU | 7.1 | 0 | 4 | 1 | 60.0 |
| Jun 9 | TEX | 5.0 | 1 | 3 | 1 | 41.8 |
| Jun 3 | CIN | 7.0 | 2 | 8 | 2 | 49.7 |
| May 29 | TEX | 5.0 | 4 | 5 | 1 | 40.7 |
| May 23 | SEA | 9.0 | 0 | 2 | 1 | 63.6 |
| May 17 | STL | 6.1 | 0 | 3 | 1 | 61.2 |
| May 12 | CWS | 4.2 | 5 | 6 | 3 | 30.9 |
| May 5 | CLE | 6.0 | 3 | 3 | 0 | 50.1 |