P · 7 seasons · 1983 – 1989 · B/T: R/R
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1983 | HOU | 48 | -2.27 | #727 | #84,466 |
| 1984★ | HOU | 60 | -2.01 | #431 | #53,489 |
| 1985 | HOU | 49 | -2.28 | #752 | #85,712 |
| 1986 | CWS | 46 | -2.38 | #772 | #93,726 |
| 1987 | STL | 60 | -2.35 | #801 | #91,991 |
| 1988 | PHI | 8 | -2.22 | #479 | #78,807 |
| 1989 | OAK | 4 | -2.25 | #520 | #82,565 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1983★ | HOU | 48 | 4.95 | #44 | #5,523 |
| 1984 | HOU | 60 | 3.99 | #61 | #7,128 |
| 1985 | HOU | 49 | -0.16 | #163 | #19,139 |
| 1986 | CWS | 46 | 0.36 | #153 | #16,911 |
| 1987 | STL | 60 | 0.10 | #165 | #17,980 |
| 1988 | PHI | 8 | -3.65 | #418 | #48,879 |
| 1989 | OAK | 4 | -2.36 | #316 | #36,963 |
★ Best season by Z