P · 11 seasons · 1967 – 1977 · B/T: R/R
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1967 | PIT | 8 | -2.11 | #365 | #65,724 |
| 1968 | PIT | 7 | -2.34 | #487 | #91,061 |
| 1969★ | PIT | 57 | -1.97 | #402 | #50,361 |
| 1970 | PIT | 41 | -2.66 | #780 | #104,052 |
| 1971 | KC | 25 | -2.86 | #782 | #107,088 |
| 1972 | KC | 35 | -2.77 | #780 | #105,983 |
| 1973 | KC | 32 | -2.31 | #459 | #88,838 |
| 1974 | KC | 31 | -2.25 | #476 | #81,775 |
| 1975 | ATL | 30 | -2.65 | #786 | #103,665 |
| 1976 | ATL | 42 | -2.29 | #447 | #86,395 |
| 1977 | CWS | 8 | -2.33 | #487 | #90,439 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1967 | PIT | 8 | -1.48 | #162 | #26,433 |
| 1968 | PIT | 7 | -1.24 | #148 | #24,833 |
| 1969 | PIT | 57 | 0.55 | #113 | #16,219 |
| 1970 | PIT | 41 | -1.27 | #185 | #25,031 |
| 1971 | KC | 25 | -0.26 | #130 | #19,596 |
| 1972 | KC | 35 | 0.25 | #117 | #17,341 |
| 1973 | KC | 32 | -2.53 | #243 | #39,495 |
| 1974★ | KC | 31 | 2.42 | #70 | #10,427 |
| 1975 | ATL | 30 | -2.04 | #213 | #32,190 |
| 1976 | ATL | 42 | -1.82 | #188 | #29,406 |
| 1977 | CWS | 8 | -2.02 | #219 | #31,790 |
★ Best season by Z