| Rank | WAA | IP | ERA | Gs | Gr | Tm |
|---|---|---|---|---|---|---|
| +033+ | 2.66 | 91.7 | 2.65 | 12 | 1 | NYN |
| Date | Rank | WAA | TeamID |
|---|---|---|---|
| 19700510 | XXXXX | 0.88 | NYN |
| 19700524 | +048+ | 1.64 | NYN |
| 19700607 | +042+ | 2.09 | NYN |
| 19700621 | +032+ | 2.62 | NYN |
| 19700630 | +033+ | 2.66 | NYN |
| 19700706 | +043+ | 2.73 | NYN |
| 19700723 | +060+ | 2.29 | NYN |
| 19700806 | +048+ | 3.15 | NYN |
| 19700820 | +069+ | 2.66 | NYN |
| 19700903 | +083+ | 2.51 | NYN |
| 19700917 | +091+ | 2.56 | NYN |
| 19701001 | +071+ | 3.56 | NYN |
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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