P · 6 seasons · 1971 – 1979 · B/T: L/L
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1971★ | CWS | 18 | -2.11 | #415 | #65,815 |
| 1972 | NYY | 12 | -2.25 | #527 | #82,564 |
| 1975 | CWS | 15 | -2.32 | #470 | #89,491 |
| 1976 | CIN | 12 | -2.36 | #634 | #92,373 |
| 1978 | CWS | 29 | -2.28 | #483 | #85,289 |
| 1979 | CWS | 30 | -2.29 | #466 | #87,086 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1971 | CWS | 18 | -1.97 | #219 | #31,235 |
| 1972 | NYY | 12 | -2.58 | #266 | #40,219 |
| 1975 | CWS | 15 | -2.43 | #239 | #37,968 |
| 1976 | CIN | 12 | -3.92 | #309 | #49,598 |
| 1978★ | CWS | 29 | -1.19 | #186 | #24,505 |
| 1979 | CWS | 30 | -2.77 | #306 | #42,753 |
★ Best season by Z