P · 8 seasons · 1985 – 1993 · B/T: L/L
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1985 | DET | 16 | -2.24 | #482 | #81,336 |
| 1986 | DET | 22 | -2.31 | #503 | #89,035 |
| 1987 | ATL | 13 | -2.31 | #735 | #88,389 |
| 1988 | ATL | 7 | -2.22 | #479 | #78,807 |
| 1989 | NYY | 22 | -2.25 | #520 | #82,565 |
| 1990 | NYY | 28 | -2.19 | #504 | #75,986 |
| 1991★ | NYY | 10 | -2.14 | #497 | #70,859 |
| 1993 | CWS | 16 | -2.18 | #553 | #74,941 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1985 | DET | 16 | -1.22 | #209 | #24,714 |
| 1986 | DET | 22 | -1.97 | #239 | #31,207 |
| 1987 | ATL | 13 | -1.66 | #238 | #27,848 |
| 1988 | ATL | 7 | -2.49 | #330 | #38,850 |
| 1989★ | NYY | 22 | 1.80 | #118 | #12,130 |
| 1990 | NYY | 28 | 1.27 | #130 | #13,718 |
| 1991 | NYY | 10 | -3.74 | #454 | #49,160 |
| 1993 | CWS | 16 | -2.35 | #375 | #36,816 |
★ Best season by Z