Jerry Koosman vs Brad Keller
MLB career
| Stat | J. Koosman | B. Keller |
|---|---|---|
| G | 612 | 265 |
| IP | 3839.1 | 820.1 |
| ERA | 3.36 | 4.14 |
| WHIP | 1.26 | 1.41 |
| K | 2556 | 644 |
| BB | 1198 | 352 |
| K/9 | 5.99 | 7.07 |
| BB/9 | 2.81 | 3.86 |
AAA career
| Stat | J. Koosman | B. Keller |
|---|---|---|
| G | — | 27 |
| IP | — | 79.2 |
| ERA | — | 4.74 |
| WHIP | — | 1.47 |
| K | — | 66 |
| BB | — | 44 |
| K/9 | — | 7.46 |
| BB/9 | — | 4.97 |
J. Koosman · last outing
Aug 21, 1985 vs Los Angeles Dodgers — 0.2 IP, 0 K, 2 BB, 5 ER
B. Keller · last outing
Jul 8, 2026 vs Cincinnati Reds — 1.0 IP, 1 K, 1 BB, 0 ER