Baseball · All Baseball players
Stephen Kolek
MLB
About Stephen Kolek
Stephen James Kolek (born April 18, 1997) is an American professional baseball pitcher for the Kansas City Royals of Major League Baseball (MLB). He has previously played in MLB for the San Diego Padres.
Bio summary from Wikipedia.
Player Stats
| W | 4 | L | 3 | ERA | 4.50 | G | 10 |
|---|---|---|---|---|---|---|---|
| GS | 10 | SV | 0 | IP | 54.0 | H | 55 |
| R | 30 | ER | 27 | BB | 12 | SO | 34 |
| WHIP | 1.241 | H/9 | 9.2 | HR/9 | 1.3 | BB/9 | 2.0 |
| K/9 | 5.7 | FIP | 4.55 | WAR | 0.3 |
2026 pitching — Baseball-Reference
Career — Lahman, through 2025
Pitching
| Year | Team | W | L | ERA | G | GS | CG | SHO | SV | IP | H | HR | BB | SO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | SDN | 3 | 0 | 5.21 | 42 | 0 | 0 | 0 | 0 | 46.2 | 59 | 4 | 12 | 39 |
| 2025 | SDN | 4 | 5 | 4.18 | 14 | 14 | 1 | 1 | 0 | 79.2 | 78 | 8 | 26 | 56 |
| 2025 | KCA | 1 | 2 | 1.91 | 5 | 5 | 0 | 0 | 0 | 33.0 | 20 | 1 | 5 | 21 |
Season lines from the Lahman Baseball Database (Version 2025, via SABR), joined through the Chadwick Register ID crosswalk. The databank runs through the 2025 season — the current season is the 2026 line below, from the MLB Stats API.
2026 Season — MLB Stats API
Pitching
| W | L | ERA | G | GS | CG | SHO | SV | IP | H | R | ER | HR | BB | SO | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4 | 3 | 4.50 | 10 | 10 | 1 | 1 | 0 | 54.0 | 55 | 30 | 27 | 8 | 12 | 34 | 1.24 |
2026 regular-season line from the MLB Stats API (statsapi.mlb.com), pulled when this page was built. Multi-team stints are combined; rate stats are recomputed from the combined totals.
Watch Stephen Kolek Highlights
“Stephen Kolek 2025 MLB Highlights!” · Open on YouTube · More Stephen Kolek videos