Kansas City Royals· #32· Pitcher
Stephen Kolek
Bats R · Throws R·Age 29 (Apr 18, 1997)·6' 3", 210 lb·Houston, TX, USA
2026 Pitching
ERA
4.50
WHIP
1.24
IP
54.0
K%
15.2
BB%
5.4
K/9
5.67
W-L
4-3
GS
10
SV
0
HLD
0
DiamondIQ WAR
54.0 IP · 2026
0.4
3.9 runs above replacement
FIP · 4.54 (park 1.01)0.0
vs replacement · SP, 54.0 IP+3.9
FIP-based runs above replacement, park-adjusted, scaled by innings over runs-per-win. Reliever leverage is simplified (v1). Full methodology.
Pitch Arsenal · Statcast
Four-Seam28% · 94.2 · 18% whiff
Sinker22% · 93.7 · 6% whiff
Slider16% · 85.6 · 42% whiff
Cutter12% · 90.2 · 21% whiff
Changeup12% · 87.1 · 18% whiff
Sweeper9% · 79.9 · 9% whiff
Career Pitching
| Yr | Tm | W | L | ERA | G | GS | SV | IP | SO | BB | WHIP | K/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | Kansas City Royals | 4 | 3 | 4.50 | 10 | 10 | 0 | 54.0 | 34 | 12 | 1.24 | 5.67 |
| 2025 | — | 5 | 7 | 3.51 | 19 | 19 | 0 | 112.2 | 77 | 31 | 1.14 | 6.15 |
| 2025 | Kansas City Royals | 1 | 2 | 1.91 | 5 | 5 | 0 | 33.0 | 21 | 5 | 0.76 | 5.73 |
| 2025 | San Diego Padres | 4 | 5 | 4.18 | 14 | 14 | 0 | 79.2 | 56 | 26 | 1.31 | 6.33 |
| 2024 | San Diego Padres | 3 | 0 | 5.21 | 42 | 0 | 0 | 46.2 | 39 | 12 | 1.52 | 7.52 |
Recent Games
Jul 2 vs Tampa Bay RaysL
2.0 IP, 3 ER, 0 K, 1 BB
Jun 21 vs St. Louis CardinalsL
1.2 IP, 9 ER, 0 K, 1 BB
Jun 14 vs Houston AstrosW
7.1 IP, 0 ER, 4 K, 1 BB
Jun 9 vs Texas RangersW
5.0 IP, 1 ER, 3 K, 1 BB
Jun 3 @ Cincinnati RedsW
7.0 IP, 2 ER, 8 K, 2 BB
May 29 @ Texas RangersL
5.0 IP, 4 ER, 5 K, 1 BB
May 23 vs Seattle MarinersW
9.0 IP, 0 ER, 2 K, 1 BB
May 17 @ St. Louis CardinalsW
6.1 IP, 0 ER, 3 K, 1 BB
May 12 @ Chicago White SoxL
4.2 IP, 5 ER, 6 K, 3 BB
May 5 vs Cleveland GuardiansW
6.0 IP, 3 ER, 3 K, 0 BB