P · 7 seasons · 1976 – 1982 · B/T: R/R
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1976★ | HOU | 14 | -1.78 | #344 | #46,047 |
| 1977 | HOU | 33 | -2.42 | #755 | #96,174 |
| 1978 | PHI | 1 | -2.28 | #483 | #85,289 |
| 1979 | PHI | 3 | -2.46 | #776 | #97,932 |
| 1980 | PHI | 12 | -2.47 | #818 | #98,170 |
| 1981 | PHI | 5 | -2.36 | #771 | #92,465 |
| 1982 | CHC | 12 | -2.15 | #457 | #71,271 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1976★ | HOU | 13 | 0.12 | #128 | #17,897 |
| 1977 | HOU | 32 | -3.87 | #351 | #49,471 |
| 1978 | PHI | 1 | -2.60 | #277 | #40,462 |
| 1979 | PHI | 3 | -2.22 | #241 | #34,781 |
| 1980 | PHI | 12 | -2.39 | #256 | #37,392 |
| 1981 | PHI | 5 | -1.96 | #234 | #31,122 |
| 1982 | CHC | 12 | -3.78 | #354 | #49,266 |
★ Best season by Z