Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1969 | CHC | 6 | 2 | 1 | 0 | 3.07 | 4 | 0 | 0 | 0 | 14.2 | 15 | 5 | 6 | 2 | 9 | 1 | 1.64 |
1970 | CHC | 34 | 5 | 3 | 1 | 3.59 | 50 | 0 | 0 | 4 | 72.2 | 88 | 29 | 37 | 3 | 23 | 1 | 1.53 |
1971 | CHC | 14 | 0 | 0 | 1 | 6.97 | 2 | 0 | 0 | 0 | 10.1 | 18 | 8 | 8 | 1 | 3 | 0 | 2.03 |
1972 | MIL | 39 | 12 | 7 | 7 | 3.11 | 97 | 4 | 1 | 0 | 147.2 | 135 | 51 | 53 | 14 | 43 | 2 | 1.21 |
1973 | MIL | 43 | 36 | 20 | 12 | 3.18 | 135 | 22 | 4 | 1 | 314.1 | 297 | 111 | 133 | 21 | 87 | 3 | 1.22 |
1974 | MIL | 33 | 31 | 10 | 13 | 4.06 | 83 | 10 | 1 | 0 | 224.0 | 230 | 101 | 104 | 27 | 60 | 6 | 1.29 |
1975 | MIL | 36 | 29 | 11 | 13 | 4.27 | 79 | 8 | 1 | 2 | 206.1 | 215 | 98 | 111 | 18 | 65 | 5 | 1.36 |
1976 | MIL | 32 | 32 | 9 | 15 | 3.71 | 101 | 7 | 0 | 0 | 225.2 | 232 | 93 | 97 | 20 | 54 | 2 | 1.27 |
1977 | KCR | 36 | 35 | 18 | 14 | 3.62 | 103 | 6 | 1 | 0 | 239.0 | 233 | 96 | 106 | 22 | 81 | 13 | 1.31 |
1978 | KCR | 8 | 3 | 1 | 2 | 4.76 | 8 | 0 | 0 | 0 | 28.1 | 31 | 15 | 18 | 4 | 12 | 2 | 1.52 |
1978 | SEA | 20 | 19 | 3 | 10 | 5.35 | 26 | 3 | 0 | 0 | 114.1 | 125 | 68 | 77 | 21 | 38 | 6 | 1.43 |
1978 | TOT | 28 | 22 | 4 | 12 | 5.24 | 34 | 3 | 0 | 0 | 142.2 | 156 | 83 | 95 | 25 | 50 | 8 | 1.44 |
| Career | 301 | 204 | 83 | 88 | 3.80 | 688 | 60 | 8 | 7 | 1597.1 | 1,619 | 675 | 750 | 153 | 475 | 41 | 1.31 |
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