Not enough days in 1978 season to compile WAA record.
| Date | Rank | WAA | TeamID |
|---|---|---|---|
| 19780512 | XXXXX | 0.54 | NYN |
| 19780526 | XXXXX | 0.09 | NYN |
| 19780609 | XXXXX | -0.58 | NYN |
| 19780623 | XXXXX | -0.75 | NYN |
| 19780707 | -073- | -1.52 | NYN |
| 19780724 | XXXXX | -0.88 | NYN |
| 19780807 | -085- | -1.84 | NYN |
| 19780821 | XXXXX | -0.14 | NYN |
| 19780904 | XXXXX | 0.32 | NYN |
| 19780918 | XXXXX | -0.61 | NYN |
| 19781002 | XXXXX | -0.57 | 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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