P · 6 seasons · 1967 – 1972 · B/T: R/R
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1967 | BAL | 19 | -2.41 | #608 | #95,655 |
| 1968 | BAL | 35 | -3.29 | #665 | #110,182 |
| 1969★ | BAL | 30 | -1.95 | #398 | #49,789 |
| 1970 | BAL | 36 | -2.91 | #819 | #107,705 |
| 1971 | NYY | 18 | -2.40 | #637 | #95,200 |
| 1972 | ATL | 26 | -2.24 | #522 | #81,231 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1967 | BAL | 19 | 2.88 | #67 | #9,337 |
| 1968★ | BAL | 35 | 5.90 | #18 | #4,235 |
| 1969 | BAL | 30 | 0.40 | #116 | #16,751 |
| 1970 | BAL | 36 | 1.76 | #95 | #12,277 |
| 1971 | NYY | 18 | -3.34 | #317 | #47,448 |
| 1972 | ATL | 26 | -2.42 | #249 | #37,794 |
★ Best season by Z