P · 10 seasons · 1970 – 1979 · B/T: L/L
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1970 | CLE | 21 | -2.26 | #551 | #84,202 |
| 1971★ | CLE | 54 | -2.24 | #482 | #81,723 |
| 1972 | CLE | 42 | -2.33 | #628 | #90,933 |
| 1973 | KC | 24 | -2.31 | #459 | #88,839 |
| 1974 | KC | 36 | -2.25 | #476 | #81,778 |
| 1975 | KC | 36 | -2.35 | #660 | #91,853 |
| 1976 | KC | 55 | -2.33 | #467 | #90,231 |
| 1977 | KC | 43 | -2.33 | #487 | #90,441 |
| 1978 | KC | 45 | -2.28 | #483 | #85,289 |
| 1979 | KC | 30 | -2.29 | #466 | #87,086 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1970 | CLE | 21 | -1.65 | #200 | #27,814 |
| 1971 | CLE | 54 | 1.31 | #96 | #13,612 |
| 1972 | CLE | 41 | -1.45 | #181 | #26,259 |
| 1973 | KC | 24 | -1.33 | #162 | #25,420 |
| 1974 | KC | 36 | 0.52 | #108 | #16,307 |
| 1975 | KC | 36 | -0.73 | #159 | #21,865 |
| 1976★ | KC | 55 | 2.97 | #66 | #9,122 |
| 1977 | KC | 43 | -0.14 | #155 | #19,017 |
| 1978 | KC | 45 | 0.73 | #122 | #15,556 |
| 1979 | KC | 30 | -3.35 | #357 | #47,527 |
★ Best season by Z