| Rank | WAA | IP | ERA | Gs | Gr | Tm |
|---|---|---|---|---|---|---|
| +042+ | 3.90 | 224.7 | 3.32 | 30 | 1 | MIN |
| Date | Rank | WAA | TeamID |
|---|---|---|---|
| 19790508 | XXXXX | -0.14 | MIN |
| 19790522 | XXXXX | 0.58 | MIN |
| 19790605 | XXXXX | 0.67 | MIN |
| 19790619 | XXXXX | 0.16 | MIN |
| 19790703 | XXXXX | 1.11 | MIN |
| 19790720 | XXXXX | 0.43 | MIN |
| 19790803 | XXXXX | 0.77 | MIN |
| 19790817 | +089+ | 2.36 | MIN |
| 19790831 | +060+ | 3.31 | MIN |
| 19790904 | +042+ | 3.90 | MIN |
| 19790916 | +070+ | 3.21 | MIN |
| 19790930 | +061+ | 3.78 | 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 |
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