P · 10 seasons · 1970 – 1980 · B/T: R/R
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1970 | DET | 10 | -2.26 | #551 | #84,200 |
| 1972★ | DET | 16 | -2.23 | #480 | #79,860 |
| 1973 | DET | 21 | -2.31 | #459 | #88,838 |
| 1974 | DET | 37 | -2.25 | #476 | #81,775 |
| 1975 | DET | 32 | -2.32 | #470 | #89,490 |
| 1976 | STL | 8 | -2.47 | #718 | #98,566 |
| 1977 | CWS | 66 | -2.33 | #487 | #90,439 |
| 1978 | CWS | 52 | -2.28 | #483 | #85,287 |
| 1979 | LAD | 42 | -2.27 | #461 | #84,437 |
| 1980 | PHI | 25 | -2.30 | #711 | #87,598 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1970 | DET | 10 | -3.06 | #314 | #45,565 |
| 1972 | DET | 16 | -1.04 | #165 | #23,592 |
| 1973 | DET | 21 | -1.67 | #183 | #27,980 |
| 1974 | DET | 37 | -3.36 | #331 | #47,594 |
| 1975 | DET | 32 | -2.07 | #216 | #32,578 |
| 1976 | STL | 8 | -1.75 | #181 | #28,713 |
| 1977★ | CWS | 66 | 6.97 | #26 | #3,131 |
| 1978 | CWS | 52 | 1.55 | #94 | #12,888 |
| 1979 | LAD | 42 | -1.88 | #221 | #30,021 |
| 1980 | PHI | 25 | -2.08 | #239 | #32,677 |
★ Best season by Z