P · 9 seasons · 1972 – 1980 · B/T: L/L
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1972 | OAK | 25 | -2.41 | #675 | #95,224 |
| 1973 | OAK | 16 | -2.31 | #459 | #88,838 |
| 1974★ | OAK | 29 | -2.25 | #476 | #81,775 |
| 1975 | CWS | 41 | -2.32 | #470 | #89,490 |
| 1976 | CWS | 45 | -2.33 | #467 | #90,229 |
| 1977 | CWS | 55 | -2.33 | #487 | #90,439 |
| 1978 | PIT | 29 | -2.52 | #813 | #100,135 |
| 1979 | OAK | 40 | -2.29 | #466 | #87,086 |
| 1980 | OAK | 21 | -2.29 | #501 | #86,677 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1972 | OAK | 25 | 0.01 | #125 | #18,414 |
| 1973 | OAK | 16 | -1.50 | #172 | #26,609 |
| 1974 | OAK | 29 | 0.82 | #99 | #15,213 |
| 1975★ | CWS | 41 | 1.53 | #91 | #12,950 |
| 1976 | CWS | 45 | 1.47 | #102 | #13,120 |
| 1977 | CWS | 55 | 0.41 | #129 | #16,712 |
| 1978 | PIT | 29 | -2.34 | #241 | #36,649 |
| 1979 | OAK | 40 | -0.12 | #160 | #18,963 |
| 1980 | OAK | 21 | -5.94 | #375 | #51,095 |
★ Best season by Z