P · 5 seasons · 1972 – 1978 · B/T: L/L
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1972 | PHI | 31 | -2.39 | #664 | #94,493 |
| 1973 | PHI | 52 | -2.43 | #684 | #96,467 |
| 1974 | PHI | 58 | -2.43 | #755 | #96,726 |
| 1975 | NYM | 1 | -2.32 | #470 | #89,490 |
| 1978★ | MIN | 17 | -2.28 | #483 | #85,287 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1972 | PHI | 31 | -1.00 | #162 | #23,357 |
| 1973★ | PHI | 52 | 1.49 | #91 | #13,043 |
| 1974 | PHI | 58 | -1.14 | #165 | #24,201 |
| 1975 | NYM | 1 | -2.55 | #254 | #39,803 |
| 1978 | MIN | 17 | -2.45 | #255 | #38,358 |
★ Best season by Z