P · 8 seasons · 1978 – 1987 · B/T: R/R
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1978 | MON | 4 | -2.28 | #483 | #85,287 |
| 1979 | MON | 2 | -2.29 | #466 | #87,086 |
| 1982 | DET | 19 | -2.23 | #491 | #80,396 |
| 1983★ | MON | 31 | -2.20 | #472 | #77,711 |
| 1984 | MON | 62 | -2.44 | #825 | #96,913 |
| 1985 | CWS | 69 | -2.24 | #482 | #81,336 |
| 1986 | CWS | 49 | -2.31 | #503 | #89,035 |
| 1987 | CWS | 43 | -2.28 | #490 | #85,050 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1978 | MON | 4 | -2.82 | #298 | #43,368 |
| 1979 | MON | 2 | -2.84 | #315 | #43,555 |
| 1982 | DET | 19 | -2.97 | #303 | #44,829 |
| 1983 | MON | 31 | 0.49 | #138 | #16,430 |
| 1984 | MON | 62 | 1.72 | #100 | #12,379 |
| 1985★ | CWS | 69 | 9.59 | #8 | #1,317 |
| 1986 | CWS | 49 | 0.38 | #152 | #16,846 |
| 1987 | CWS | 43 | 0.70 | #151 | #15,641 |
★ Best season by Z