Career Stats
| Season | TM | LG | W | L | ERA | G | GS | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | SO |
|---|
| 1965 | CLE | AL | 4 | 3 | 3.43 | 17 | 8 | 1 | 0 | 2 | 60.1 | 55 | 23 | 26 | 2 | 28 | 1 | 37 |
| 1966 | CLE | AL | 13 | 10 | 2.48 | 38 | 21 | 7 | 3 | 0 | 192.0 | 173 | 53 | 60 | 9 | 45 | 1 | 132 |
| 1967 | CLE | AL | 14 | 13 | 2.62 | 30 | 29 | 15 | 6 | 0 | 223.0 | 180 | 65 | 79 | 9 | 72 | 3 | 141 |
| 1968 | CLE | AL | 8 | 15 | 4.15 | 32 | 27 | 4 | 2 | 0 | 158.1 | 139 | 73 | 81 | 11 | 81 | 5 | 78 |
| 1969 | CLE | AL | 5 | 14 | 5.70 | 32 | 23 | 1 | 1 | 0 | 143.2 | 145 | 91 | 95 | 14 | 81 | 3 | 76 |
| 1970 | CLE | AL | 11 | 3 | 2.90 | 23 | 19 | 8 | 1 | 0 | 142.2 | 101 | 46 | 47 | 14 | 53 | 3 | 72 |
| 1971 | CLE | AL | 1 | 13 | 6.19 | 37 | 16 | 1 | 0 | 1 | 113.1 | 138 | 78 | 83 | 18 | 56 | 6 | 52 |
| 1972 | CLE | AL | 0 | 3 | 5.85 | 12 | 1 | 0 | 0 | 0 | 20.0 | 23 | 13 | 16 | 1 | 15 | 0 | 10 |
| 1974 | TEX | AL | 12 | 9 | 3.95 | 37 | 27 | 8 | 2 | 0 | 186.2 | 202 | 82 | 103 | 15 | 48 | 5 | 98 |
| 1975 | TEX | AL | 9 | 10 | 3.80 | 33 | 26 | 8 | 1 | 0 | 189.1 | 203 | 80 | 96 | 17 | 62 | 6 | 93 |
| 1976 | TEX | AL | 8 | 8 | 3.62 | 35 | 8 | 2 | 1 | 1 | 124.1 | 127 | 50 | 63 | 8 | 38 | 3 | 63 |
| 1977 | TOT | AL | 2 | 3 | 6.26 | 12 | 5 | 1 | 0 | 0 | 41.2 | 58 | 29 | 30 | 4 | 19 | 0 | 21 |
| 1977 | ATL | NL | 0 | 3 | 6.87 | 16 | 5 | 0 | 0 | 0 | 36.2 | 49 | 28 | 31 | 3 | 16 | 0 | 18 |
| 1977 | TEX | AL | 1 | 0 | 8.76 | 6 | 0 | 0 | 0 | 0 | 12.1 | 22 | 12 | 13 | 2 | 5 | 0 | 10 |
| 1977 | TOR | AL | 1 | 3 | 5.22 | 6 | 5 | 1 | 0 | 0 | 29.1 | 36 | 17 | 17 | 2 | 14 | 0 | 11 |
| 1977 | TOT | | 2 | 6 | 6.55 | 28 | 10 | 1 | 0 | 0 | 78.1 | 107 | 57 | 61 | 7 | 35 | 0 | 39 |
| Career | | | 87 | 107 | 3.92 | 354 | 215 | 56 | 17 | 4 | 1632.0 | 1,593 | 711 | 810 | 125 | 614 | 36 | 891 |
