Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1969 | BOS | 20 | 1 | 1 | 3 | 4.50 | 45 | 0 | 0 | 0 | 52.0 | 56 | 26 | 27 | 9 | 28 | 2 | 1.62 |
1970 | BOS | 11 | 5 | 2 | 2 | 4.62 | 19 | 0 | 0 | 1 | 37.0 | 48 | 19 | 20 | 3 | 14 | 0 | 1.68 |
1971 | BOS | 47 | 3 | 9 | 2 | 2.74 | 74 | 0 | 0 | 2 | 102.0 | 102 | 31 | 35 | 7 | 46 | 1 | 1.45 |
1972 | BOS | 47 | 0 | 7 | 4 | 3.20 | 43 | 0 | 0 | 5 | 84.1 | 75 | 30 | 31 | 5 | 32 | 1 | 1.27 |
1973 | BOS | 38 | 33 | 17 | 11 | 2.75 | 120 | 18 | 1 | 1 | 284.2 | 275 | 87 | 100 | 20 | 76 | 5 | 1.23 |
1974 | BOS | 38 | 37 | 17 | 15 | 3.51 | 95 | 16 | 1 | 0 | 282.1 | 320 | 110 | 123 | 25 | 67 | 4 | 1.37 |
1975 | BOS | 41 | 34 | 17 | 9 | 3.95 | 78 | 17 | 4 | 0 | 260.0 | 274 | 114 | 123 | 20 | 69 | 3 | 1.32 |
1976 | BOS | 24 | 14 | 5 | 7 | 5.63 | 29 | 1 | 0 | 3 | 96.0 | 124 | 60 | 68 | 13 | 28 | 3 | 1.58 |
1977 | BOS | 27 | 16 | 9 | 5 | 4.43 | 31 | 4 | 0 | 1 | 128.0 | 155 | 63 | 67 | 14 | 29 | 0 | 1.44 |
1978 | BOS | 28 | 24 | 10 | 10 | 3.46 | 44 | 8 | 1 | 0 | 177.0 | 198 | 68 | 89 | 20 | 59 | 2 | 1.45 |
1979 | MON | 33 | 33 | 16 | 10 | 3.04 | 59 | 6 | 3 | 0 | 222.0 | 230 | 75 | 91 | 20 | 46 | 1 | 1.24 |
1980 | MON | 24 | 18 | 4 | 6 | 4.96 | 34 | 2 | 0 | 0 | 118.0 | 156 | 65 | 71 | 13 | 22 | 3 | 1.51 |
1981 | MON | 31 | 7 | 5 | 6 | 2.94 | 34 | 0 | 0 | 6 | 88.2 | 90 | 29 | 33 | 6 | 14 | 2 | 1.17 |
1982 | MON | 7 | 0 | 0 | 0 | 4.38 | 8 | 0 | 0 | 0 | 12.1 | 19 | 6 | 7 | 1 | 1 | 0 | 1.62 |
| Career | 416 | 225 | 119 | 90 | 3.62 | 713 | 72 | 10 | 19 | 1944.1 | 2,122 | 783 | 885 | 176 | 531 | 27 | 1.36 |
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