62
GS+
13%
Whiff
96.3
Top velo
Inning velo shape
KC / Last 3 qualified starts
Stephen Kolek
Form through 2026-06-19
55
Even form / 3 of 3
ERA 1.59 · WHIP 1.01 · K/9 5.7 · IP 39.2 · FIP 4.13 · xERA 2.20
Season form trend
Rolling GS+
| 2026-05-17 | 55 |
| 2026-05-23 | 60 |
| 2026-05-29 | 42 |
| 2026-06-03 | 54 |
| 2026-06-09 | 48 |
| 2026-06-14 | 62 |
Arsenal / pitch mix
How he gets outs
fixture
| Pitch | Usage | Velo | Whiff | Put-away | xwOBA |
|---|---|---|---|---|---|
4-Seam | 40% | 99.4 | 18% | 14% | .337 |
Sliderout pitch | 29% | 91.1 | 32% | 20% | .301 |
Changeup | 15% | 88.3 | 28% | 17% | .313 |
Sinker | 10% | 97.2 | 10% | 10% | .357 |
Curveball | 6% | 83.4 | 20% | 15% | .331 |
Advanced / percentiles
Trust indicators
K% 15%
98th pct
BB% 2%
90th pct
Whiff% --
50th pct
Chase% --
50th pct
CSW% --
50th pct
Barrel% 6%
98th pct
Hard-hit% 28%
98th pct
xERA 2.20
98th pct
FIP 4.13
38th pct
GB% pending
50th pct
Splits
Scouting splits
Vs RHB
wOBA --
K --
BB --
Vs LHB
wOBA --
K --
BB --
Home
wOBA --
K --
BB --
Away
wOBA --
K --
BB --
Times through order
wOBA --
K --
BB --
GS+ game log
2026-06-09vs TEX / Kauffman Stadium5.0 IP, 8 H, 1 ER, 1 BB, 3 KGS+ 48Depth
48
GS+
15%
Whiff
95.1
Top velo
Inning velo shape
2026-06-03vs CIN / Great American Ball Park7.0 IP, 6 H, 2 ER, 2 BB, 8 KGS+ 54Depth
54
GS+
9%
Whiff
96.0
Top velo
Inning velo shape