P · 8 seasons · 1973 – 1980 · B/T: R/R
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1973 | NYY | 8 | -2.31 | #459 | #88,838 |
| 1974★ | CLE | 55 | -2.25 | #476 | #81,775 |
| 1975 | CLE | 50 | -2.32 | #470 | #89,490 |
| 1976 | CLE | 39 | -2.33 | #467 | #90,229 |
| 1977 | CLE | 21 | -2.33 | #487 | #90,439 |
| 1978 | TOR | 8 | -2.28 | #483 | #85,287 |
| 1979 | TOR | 44 | -2.29 | #466 | #87,086 |
| 1980 | TOR | 33 | -2.29 | #501 | #86,677 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1973 | NYY | 8 | -2.41 | #232 | #37,710 |
| 1974★ | CLE | 55 | 3.63 | #52 | #7,818 |
| 1975 | CLE | 50 | 1.67 | #85 | #12,527 |
| 1976 | CLE | 39 | -0.93 | #152 | #22,935 |
| 1977 | CLE | 21 | -3.03 | #306 | #45,305 |
| 1978 | TOR | 8 | -2.43 | #254 | #38,046 |
| 1979 | TOR | 44 | 1.81 | #100 | #12,121 |
| 1980 | TOR | 33 | -1.92 | #231 | #30,536 |
★ Best season by Z