P · 10 seasons · 1962 – 1972 · B/T: R/L
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1962 | MIN | 1 | -2.23 | #405 | #80,788 |
| 1963 | MIN | 10 | -2.68 | #626 | #104,281 |
| 1964 | MIN | 30 | -2.43 | #585 | #96,573 |
| 1966★ | MIN | 1 | -2.19 | #398 | #75,826 |
| 1967 | MIN | 25 | -2.28 | #519 | #86,146 |
| 1968 | MIN | 29 | -2.42 | #546 | #95,858 |
| 1969 | OAK | 39 | -2.52 | #749 | #100,267 |
| 1970 | OAK | 28 | -2.40 | #678 | #94,819 |
| 1971 | OAK | 31 | -2.38 | #621 | #93,768 |
| 1972 | NYY | 23 | -2.25 | #529 | #83,020 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1962 | MIN | 1 | -2.41 | #206 | #37,652 |
| 1963 | MIN | 10 | -0.62 | #125 | #21,286 |
| 1964 | MIN | 30 | -1.32 | #159 | #25,335 |
| 1966 | MIN | 1 | -2.30 | #206 | #35,963 |
| 1967 | MIN | 25 | -1.99 | #187 | #31,495 |
| 1968 | MIN | 28 | -1.91 | #171 | #30,400 |
| 1969★ | OAK | 39 | 1.02 | #100 | #14,565 |
| 1970 | OAK | 28 | -0.19 | #145 | #19,259 |
| 1971 | OAK | 31 | -1.16 | #167 | #24,306 |
| 1972 | NYY | 23 | -3.60 | #319 | #48,727 |
★ Best season by Z