P · 8 seasons · 1985 – 1992 · B/T: R/L
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1985 | CAL | 68 | -2.21 | #474 | #78,728 |
| 1986 | PIT | 65 | -2.50 | #850 | #99,695 |
| 1987 | NYY | 55 | -2.28 | #490 | #85,052 |
| 1988 | NYY | 6 | -2.22 | #479 | #78,807 |
| 1989 | SD | 23 | -2.44 | #889 | #97,097 |
| 1990 | SD | 9 | -2.19 | #504 | #75,986 |
| 1991★ | SD | 12 | -2.18 | #793 | #74,697 |
| 1992 | SD | 50 | -2.22 | #789 | #79,405 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1985★ | CAL | 68 | 0.25 | #146 | #17,317 |
| 1986 | PIT | 65 | -0.99 | #200 | #23,297 |
| 1987 | NYY | 55 | -1.07 | #201 | #23,802 |
| 1988 | NYY | 6 | -2.79 | #368 | #43,062 |
| 1989 | SD | 23 | -1.40 | #217 | #25,912 |
| 1990 | SD | 9 | -2.76 | #404 | #42,587 |
| 1991 | SD | 12 | -2.09 | #297 | #32,900 |
| 1992 | BAL | 50 | -1.21 | #227 | #24,651 |
★ Best season by Z