P · 10 seasons · 1987 – 1998 · B/T: L/L
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1987 | OAK | 29 | -2.28 | #490 | #85,050 |
| 1988 | OAK | 58 | -2.22 | #479 | #78,807 |
| 1989 | OAK | 46 | -2.25 | #520 | #82,565 |
| 1990 | NYY | 54 | -2.19 | #504 | #75,986 |
| 1991 | NYY | 68 | -2.14 | #497 | #70,859 |
| 1992 | NYY | 46 | -2.19 | #525 | #76,350 |
| 1993 | CIN | 47 | -2.25 | #897 | #81,744 |
| 1994 | TOR | 38 | -2.25 | #508 | #82,255 |
| 1997 | LAA | 15 | -2.16 | #573 | #73,573 |
| 1998★ | LAA | 50 | -2.13 | #590 | #69,589 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1987 | OAK | 29 | -1.14 | #203 | #24,219 |
| 1988 | OAK | 58 | 0.85 | #136 | #15,135 |
| 1989 | NYY | 46 | -1.69 | #238 | #28,130 |
| 1990 | NYY | 54 | -0.74 | #209 | #21,919 |
| 1991★ | NYY | 68 | 1.96 | #119 | #11,668 |
| 1992 | NYY | 46 | -2.69 | #345 | #41,806 |
| 1993 | CIN | 47 | -2.07 | #329 | #32,526 |
| 1994 | DET | 38 | -2.06 | #306 | #32,429 |
| 1997 | LAA | 15 | -1.94 | #327 | #30,762 |
| 1998 | LAA | 50 | -1.30 | #286 | #25,192 |
★ Best season by Z