Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1963 | PHI | 34 | 30 | 14 | 11 | 2.97 | 176 | 10 | 5 | 0 | 203.1 | 148 | 67 | 76 | 15 | 102 | 6 | 1.23 |
1964 | PHI | 30 | 19 | 8 | 7 | 4.13 | 96 | 3 | 1 | 0 | 135.0 | 139 | 62 | 77 | 15 | 56 | 5 | 1.44 |
1965 | PHI | 33 | 30 | 14 | 10 | 3.22 | 134 | 11 | 2 | 0 | 204.1 | 188 | 73 | 89 | 14 | 78 | 12 | 1.30 |
1966 | PHI | 34 | 12 | 7 | 4 | 5.04 | 100 | 1 | 0 | 1 | 110.2 | 106 | 62 | 66 | 19 | 53 | 7 | 1.44 |
1967 | CHC | 30 | 22 | 8 | 11 | 3.89 | 111 | 4 | 1 | 0 | 152.2 | 138 | 66 | 69 | 22 | 59 | 2 | 1.29 |
1968 | BOS | 35 | 30 | 16 | 6 | 2.91 | 190 | 11 | 6 | 0 | 216.1 | 166 | 70 | 79 | 18 | 82 | 9 | 1.15 |
1969 | BOS | 32 | 32 | 17 | 8 | 3.81 | 172 | 9 | 2 | 0 | 227.0 | 195 | 96 | 103 | 25 | 79 | 6 | 1.21 |
1970 | BOS | 33 | 33 | 17 | 14 | 3.04 | 197 | 15 | 1 | 0 | 251.1 | 211 | 85 | 104 | 22 | 91 | 11 | 1.20 |
1971 | BOS | 35 | 35 | 14 | 16 | 3.60 | 151 | 12 | 3 | 0 | 242.1 | 236 | 97 | 108 | 21 | 67 | 5 | 1.25 |
1972 | BOS | 16 | 16 | 5 | 8 | 4.46 | 52 | 4 | 1 | 0 | 105.0 | 104 | 52 | 60 | 8 | 53 | 3 | 1.50 |
1973 | BOS | 10 | 9 | 2 | 6 | 4.47 | 32 | 0 | 0 | 0 | 50.1 | 46 | 25 | 32 | 9 | 32 | 4 | 1.55 |
| Career | 322 | 268 | 122 | 101 | 3.58 | 1,411 | 80 | 22 | 1 | 1898.1 | 1,677 | 755 | 863 | 188 | 752 | 70 | 1.28 |
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