P · 7 seasons · 1977 – 1984 · B/T: R/L
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1977 | OAK | 64 | -2.33 | #487 | #90,439 |
| 1978 | OAK | 74 | -2.28 | #483 | #85,287 |
| 1979 | OAK | 42 | -2.29 | #466 | #87,086 |
| 1980 | OAK | 47 | -2.29 | #501 | #86,677 |
| 1981 | CLE | 15 | -2.26 | #504 | #83,102 |
| 1983 | CAL | 8 | -2.26 | #494 | #83,790 |
| 1984★ | SF | 34 | -2.15 | #468 | #72,492 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1977★ | OAK | 64 | 3.35 | #68 | #8,343 |
| 1978 | OAK | 74 | 1.77 | #88 | #12,238 |
| 1979 | OAK | 42 | -3.00 | #328 | #45,082 |
| 1980 | OAK | 47 | 1.66 | #109 | #12,545 |
| 1981 | CLE | 15 | -4.27 | #342 | #50,169 |
| 1983 | CAL | 8 | -2.45 | #272 | #38,243 |
| 1984 | SF | 34 | -1.90 | #230 | #30,244 |
★ Best season by Z