| Rank | WAA | IP | ERA | Gs | Gr | Tm |
|---|---|---|---|---|---|---|
| +041+ | 2.34 | 114.7 | 2.75 | 15 | 0 | NYN |
| Date | Rank | WAA | TeamID |
|---|---|---|---|
| 19730510 | +016+ | 2.10 | NYN |
| 19730524 | +056+ | 1.37 | NYN |
| 19730607 | +048+ | 1.67 | NYN |
| 19730621 | +020+ | 2.81 | NYN |
| 19730628 | +041+ | 2.34 | NYN |
| 19730706 | +045+ | 2.44 | NYN |
| 19730720 | XXXXX | 0.99 | NYN |
| 19730806 | +131+ | 1.44 | NYN |
| 19730820 | +121+ | 1.67 | NYN |
| 19730903 | +041+ | 3.95 | NYN |
| 19730917 | +066+ | 3.38 | NYN |
| 19731001 | +029+ | 5.18 | NYN |
Jerry Koosman Post Season Games
| Rank | WAA | IP | ERA | Gs | Gr | Tm |
|---|---|---|---|---|---|---|
| XXXXX | -0.18 | 0.3 | 27 | 0 | 1 | CHA |
| XXXXX | 0.21 | 40 | 3.38 | 6 | 0 | NYN |
| XXXXX | 0.03 | 40.3 | 3.57 | 0 | 0 | TOT |
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