P · 13 seasons · 1981 – 1993 · B/T: R/R
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1981 | NYY | 8 | -2.26 | #504 | #83,102 |
| 1982 | SEA | 22 | -2.23 | #491 | #80,396 |
| 1983 | SEA | 10 | -2.26 | #494 | #83,790 |
| 1984 | CWS | 20 | -2.28 | #520 | #85,716 |
| 1985 | CWS | 47 | -2.28 | #734 | #84,991 |
| 1986 | CWS | 54 | -2.31 | #503 | #89,035 |
| 1987 | OAK | 55 | -2.28 | #490 | #85,050 |
| 1988★ | OAK | 57 | -2.06 | #436 | #59,497 |
| 1989 | OAK | 51 | -2.21 | #489 | #78,629 |
| 1990 | OAK | 51 | -2.19 | #504 | #75,986 |
| 1991 | OAK | 44 | -2.14 | #497 | #70,859 |
| 1992 | OAK | 29 | -2.15 | #506 | #72,057 |
| 1993 | CAL | 52 | -2.18 | #553 | #74,941 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1981 | NYY | 8 | -2.78 | #293 | #42,850 |
| 1982 | SEA | 22 | -2.43 | #265 | #38,052 |
| 1983 | SEA | 10 | -4.60 | #381 | #50,563 |
| 1984 | CWS | 20 | -1.03 | #192 | #23,528 |
| 1985 | CWS | 46 | 0.62 | #134 | #15,925 |
| 1986 | CWS | 54 | 0.94 | #131 | #14,846 |
| 1987 | OAK | 54 | 2.40 | #95 | #10,479 |
| 1988 | OAK | 54 | 2.80 | #91 | #9,502 |
| 1989 | OAK | 50 | 1.31 | #128 | #13,603 |
| 1990★ | OAK | 51 | 3.49 | #80 | #8,087 |
| 1991 | OAK | 44 | -4.14 | #462 | #49,979 |
| 1992 | OAK | 28 | -3.90 | #423 | #49,556 |
| 1993 | CAL | 52 | -0.28 | #189 | #19,670 |
★ Best season by Z