P · 15 seasons · 1965 – 1979 · B/T: R/R
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1965 | WS2 | 2 | -2.36 | #554 | #92,896 |
| 1966 | WS2 | 1 | -2.27 | #508 | #84,827 |
| 1967 | WS2 | 28 | -2.66 | #677 | #103,966 |
| 1968 | WS2 | 34 | -2.85 | #645 | #107,032 |
| 1969 | WS2 | 40 | -3.24 | #834 | #109,954 |
| 1970 | WS2 | 39 | -2.80 | #808 | #106,327 |
| 1971 | DET | 39 | -3.77 | #827 | #111,166 |
| 1972 | DET | 40 | -3.03 | #806 | #108,777 |
| 1973 | DET | 40 | -2.31 | #459 | #88,838 |
| 1974★ | DET | 41 | -2.25 | #476 | #81,775 |
| 1975 | DET | 31 | -2.32 | #470 | #89,490 |
| 1976 | CHC | 51 | -2.48 | #723 | #98,734 |
| 1977 | OAK | 43 | -2.33 | #487 | #90,439 |
| 1978 | TOR | 41 | -2.28 | #483 | #85,287 |
| 1979 | PIT | 15 | -2.33 | #706 | #90,934 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1965 | WS2 | 2 | -1.34 | #152 | #25,532 |
| 1966 | WS2 | 1 | -1.95 | #176 | #30,974 |
| 1967 | WS2 | 28 | -3.74 | #301 | #49,172 |
| 1968 | WS2 | 33 | 1.17 | #88 | #14,033 |
| 1969 | WS2 | 40 | 3.85 | #52 | #7,402 |
| 1970 | WS2 | 39 | 3.19 | #65 | #8,644 |
| 1971★ | DET | 39 | 7.40 | #15 | #2,719 |
| 1972 | DET | 40 | 7.19 | #19 | #2,899 |
| 1973 | DET | 40 | 5.95 | #25 | #4,179 |
| 1974 | DET | 41 | -1.04 | #161 | #23,594 |
| 1975 | DET | 31 | -3.94 | #332 | #49,642 |
| 1976 | CHC | 51 | -1.81 | #186 | #29,289 |
| 1977 | OAK | 43 | 1.33 | #104 | #13,551 |
| 1978 | TOR | 41 | -1.41 | #193 | #26,024 |
| 1979 | PIT | 15 | -3.03 | #330 | #45,328 |
★ Best season by Z