P · 5 seasons · 1968 – 1974 · B/T: L/R
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1968 | DET | 38 | -2.55 | #593 | #101,042 |
| 1969★ | DET | 18 | -2.20 | #547 | #77,476 |
| 1970 | DET | 43 | -2.53 | #742 | #100,616 |
| 1971 | STL | 29 | -2.46 | #681 | #97,864 |
| 1974 | PIT | 14 | -2.37 | #724 | #93,282 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1968★ | DET | 38 | 1.03 | #91 | #14,509 |
| 1969 | DET | 18 | -2.24 | #232 | #35,106 |
| 1970 | DET | 43 | -1.39 | #191 | #25,843 |
| 1971 | STL | 29 | -2.97 | #295 | #44,784 |
| 1974 | PIT | 14 | -3.12 | #318 | #46,031 |
★ Best season by Z