| Rank | WAA | IP | ERA | Gs | Gr | Tm |
|---|---|---|---|---|---|---|
| -051- | -1.30 | 65.3 | 4.82 | 10 | 1 | MIN |
| Date | Rank | WAA | TeamID |
|---|---|---|---|
| 19800513 | XXXXX | -0.87 | MIN |
| 19800526 | -051- | -1.30 | MIN |
| 19800530 | XXXXX | -0.94 | MIN |
| 19800613 | XXXXX | -1.01 | MIN |
| 19800627 | XXXXX | -0.55 | MIN |
| 19800714 | -096- | -1.37 | MIN |
| 19800728 | -028- | -2.85 | MIN |
| 19800811 | -079- | -1.78 | MIN |
| 19800825 | -048- | -2.68 | MIN |
| 19800908 | -055- | -2.52 | MIN |
| 19800922 | -127- | -1.66 | MIN |
| 19801006 | XXXXX | -1.16 | MIN |
Jerry Koosman Post Season Games
| Rank | WAA | IP | ERA | Gs | Gr | Tm |
|---|---|---|---|---|---|---|
| XXXXX | -0.18 | 0.3 | 27 | 0 | 1 | CHA |
| XXXXX | 0.2 | 40 | 3.38 | 6 | 0 | NYN |
| XXXXX | 0.02 | 40.3 | 3.57 | 0 | 0 | TOT |
_