P · 7 seasons · 1968 – 1974 · B/T: L/L
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1968 | CLE | 36 | -2.35 | #501 | #92,205 |
| 1969 | CLE | 47 | -2.86 | #814 | #107,175 |
| 1970 | CLE | 30 | -2.44 | #705 | #97,096 |
| 1971 | CLE | 17 | -2.66 | #756 | #103,901 |
| 1972 | TEX | 49 | -2.52 | #727 | #100,100 |
| 1973 | TEX | 48 | -2.43 | #687 | #96,744 |
| 1974★ | CHC | 2 | -2.25 | #476 | #81,778 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1968 | CLE | 36 | -0.35 | #125 | #20,025 |
| 1969 | CLE | 47 | 0.35 | #118 | #16,935 |
| 1970 | CLE | 30 | -2.59 | #269 | #40,368 |
| 1971 | CLE | 17 | -3.54 | #326 | #48,489 |
| 1972★ | TEX | 49 | 2.87 | #60 | #9,363 |
| 1973 | TEX | 47 | -2.26 | #214 | #35,439 |
| 1974 | CHC | 2 | -2.81 | #286 | #43,165 |
★ Best season by Z