P · 6 seasons · 1983 – 1988 · B/T: R/R
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1983 | PIT | 7 | -2.26 | #494 | #83,790 |
| 1984 | PIT | 9 | -2.31 | #742 | #88,542 |
| 1985 | PIT | 30 | -2.50 | #847 | #99,619 |
| 1986 | PIT | 50 | -2.66 | #895 | #103,964 |
| 1987 | CWS | 56 | -2.28 | #490 | #85,050 |
| 1988★ | MIN | 9 | -2.22 | #479 | #78,807 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1983 | PIT | 7 | -3.16 | #337 | #46,272 |
| 1984 | PIT | 9 | -2.20 | #257 | #34,557 |
| 1985 | PIT | 30 | -2.68 | #312 | #41,575 |
| 1986★ | PIT | 50 | 0.06 | #162 | #18,177 |
| 1987 | CWS | 56 | -1.73 | #242 | #28,560 |
| 1988 | MIN | 9 | -3.34 | #405 | #47,484 |
★ Best season by Z