Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1965 | WSH | 2 | 2 | 2 | 0 | 1.50 | 7 | 2 | 0 | 0 | 18.0 | 9 | 3 | 3 | 0 | 8 | 0 | 0.94 |
1966 | WSH | 1 | 1 | 1 | 0 | 2.00 | 4 | 1 | 0 | 0 | 9.0 | 6 | 2 | 2 | 0 | 2 | 0 | 0.89 |
1967 | WSH | 28 | 22 | 8 | 9 | 4.63 | 77 | 3 | 0 | 0 | 134.0 | 154 | 69 | 78 | 6 | 47 | 9 | 1.50 |
1968 | WSH | 33 | 33 | 12 | 16 | 3.27 | 139 | 12 | 2 | 0 | 223.0 | 212 | 81 | 98 | 18 | 51 | 12 | 1.18 |
1969 | WSH | 40 | 36 | 12 | 13 | 3.27 | 182 | 12 | 4 | 1 | 247.2 | 222 | 90 | 102 | 26 | 100 | 6 | 1.30 |
1970 | WSH | 39 | 29 | 8 | 12 | 3.58 | 152 | 6 | 1 | 0 | 218.2 | 190 | 87 | 98 | 25 | 89 | 4 | 1.28 |
1971 | DET | 39 | 38 | 20 | 9 | 3.15 | 236 | 16 | 3 | 0 | 286.0 | 241 | 100 | 106 | 17 | 96 | 7 | 1.18 |
1972 | DET | 40 | 39 | 19 | 14 | 2.80 | 222 | 9 | 3 | 0 | 280.0 | 216 | 87 | 99 | 23 | 110 | 9 | 1.16 |
1973 | DET | 40 | 40 | 23 | 15 | 3.53 | 202 | 13 | 2 | 0 | 288.1 | 283 | 113 | 125 | 32 | 93 | 10 | 1.30 |
1974 | DET | 41 | 41 | 14 | 12 | 4.32 | 177 | 11 | 2 | 0 | 285.2 | 272 | 137 | 160 | 30 | 158 | 12 | 1.51 |
1975 | DET | 31 | 31 | 10 | 18 | 5.55 | 125 | 6 | 1 | 0 | 201.0 | 234 | 124 | 137 | 27 | 85 | 9 | 1.59 |
1976 | DET | 12 | 12 | 2 | 5 | 4.86 | 38 | 1 | 0 | 0 | 66.2 | 80 | 36 | 44 | 1 | 34 | 5 | 1.71 |
1976 | CHC | 39 | 4 | 2 | 8 | 4.10 | 66 | 0 | 0 | 4 | 79.0 | 72 | 36 | 43 | 9 | 35 | 2 | 1.35 |
1976 | TOT | 51 | 16 | 4 | 13 | 4.45 | 104 | 1 | 0 | 4 | 145.2 | 152 | 72 | 87 | 10 | 69 | 7 | 1.52 |
1977 | OAK | 43 | 12 | 4 | 4 | 2.96 | 55 | 2 | 0 | 2 | 127.2 | 114 | 42 | 51 | 11 | 49 | 2 | 1.28 |
1978 | OAK | 10 | 0 | 3 | 0 | 1.37 | 4 | 0 | 0 | 0 | 19.2 | 12 | 3 | 3 | 1 | 5 | 0 | 0.86 |
1978 | TOR | 31 | 0 | 2 | 0 | 4.60 | 28 | 0 | 0 | 0 | 60.2 | 67 | 31 | 34 | 6 | 30 | 1 | 1.60 |
1978 | TOT | 41 | 0 | 5 | 0 | 3.81 | 32 | 0 | 0 | 0 | 80.1 | 79 | 34 | 37 | 7 | 35 | 1 | 1.42 |
1979 | SFG | 5 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | 0 | 3.2 | 3 | 0 | 2 | 0 | 2 | 1 | 1.36 |
1979 | PIT | 10 | 0 | 0 | 0 | 6.10 | 14 | 0 | 0 | 0 | 20.2 | 29 | 14 | 17 | 1 | 9 | 1 | 1.84 |
1979 | TOT | 15 | 0 | 0 | 0 | 5.18 | 14 | 0 | 0 | 0 | 24.1 | 32 | 14 | 19 | 1 | 11 | 2 | 1.77 |
| Career | 484 | 340 | 142 | 135 | 3.70 | 1,728 | 94 | 18 | 7 | 2569.1 | 2,416 | 1,055 | 1,202 | 233 | 1,003 | 90 | 1.33 |
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