Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1965 | KCA | 32 | 20 | 8 | 8 | 4.26 | 82 | 3 | 2 | 0 | 133.0 | 124 | 63 | 68 | 21 | 46 | 2 | 1.28 |
1966 | KCA | 30 | 25 | 9 | 11 | 4.02 | 103 | 4 | 0 | 0 | 176.2 | 158 | 79 | 87 | 17 | 64 | 2 | 1.26 |
1967 | KCA | 35 | 35 | 13 | 17 | 2.81 | 196 | 13 | 5 | 0 | 259.2 | 209 | 81 | 91 | 16 | 84 | 2 | 1.13 |
1968 | OAK | 36 | 34 | 13 | 13 | 3.35 | 172 | 11 | 2 | 1 | 234.0 | 210 | 87 | 99 | 29 | 69 | 4 | 1.19 |
1969 | OAK | 38 | 35 | 12 | 15 | 3.35 | 150 | 10 | 3 | 0 | 247.0 | 210 | 92 | 99 | 34 | 85 | 5 | 1.19 |
1970 | OAK | 40 | 40 | 18 | 14 | 3.81 | 178 | 9 | 1 | 0 | 262.1 | 253 | 111 | 124 | 32 | 74 | 9 | 1.25 |
1971 | OAK | 37 | 37 | 21 | 11 | 2.96 | 181 | 16 | 4 | 0 | 273.2 | 225 | 90 | 103 | 27 | 80 | 4 | 1.11 |
1972 | OAK | 38 | 37 | 21 | 7 | 2.04 | 191 | 16 | 5 | 0 | 295.1 | 200 | 67 | 74 | 21 | 70 | 3 | 0.91 |
1973 | OAK | 36 | 36 | 21 | 5 | 3.34 | 124 | 11 | 3 | 0 | 256.1 | 222 | 95 | 105 | 39 | 69 | 1 | 1.14 |
1974 | OAK | 41 | 41 | 25 | 12 | 2.49 | 143 | 23 | 6 | 0 | 318.1 | 268 | 88 | 97 | 25 | 46 | 4 | 0.99 |
1975 | NYY | 39 | 39 | 23 | 14 | 2.58 | 177 | 30 | 7 | 0 | 328.0 | 248 | 94 | 107 | 25 | 83 | 5 | 1.01 |
1976 | NYY | 36 | 36 | 17 | 15 | 3.53 | 173 | 21 | 2 | 0 | 298.2 | 268 | 117 | 126 | 28 | 68 | 3 | 1.13 |
1977 | NYY | 22 | 22 | 9 | 9 | 4.71 | 52 | 8 | 1 | 0 | 143.1 | 137 | 75 | 83 | 29 | 47 | 3 | 1.28 |
1978 | NYY | 21 | 20 | 12 | 6 | 3.58 | 56 | 5 | 1 | 0 | 118.0 | 98 | 47 | 49 | 16 | 35 | 1 | 1.13 |
1979 | NYY | 19 | 19 | 2 | 9 | 5.31 | 34 | 1 | 0 | 0 | 105.0 | 128 | 62 | 68 | 15 | 34 | 1 | 1.54 |
| Career | 500 | 476 | 224 | 166 | 3.26 | 2,012 | 181 | 42 | 1 | 3449.1 | 2,958 | 1,248 | 1,380 | 374 | 954 | 49 | 1.13 |
Postseason
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1971 | OAK | 1 | 1 | 0 | 1 | 5.63 | 6 | 1 | 0 | 0 | 8.0 | 7 | 5 | 5 | 4 | 2 | 0 | 1.13 |
1972 | OAK | 5 | 4 | 2 | 0 | 2.01 | 20 | 0 | 0 | 0 | 31.1 | 22 | 7 | 7 | 4 | 11 | 0 | 1.05 |
1973 | OAK | 4 | 4 | 3 | 0 | 1.82 | 12 | 1 | 1 | 0 | 29.2 | 23 | 6 | 6 | 1 | 9 | 1 | 1.08 |
1974 | OAK | 4 | 3 | 2 | 1 | 3.26 | 11 | 0 | 0 | 1 | 19.1 | 16 | 7 | 7 | 4 | 4 | 0 | 1.03 |
1976 | NYY | 3 | 3 | 1 | 2 | 3.92 | 10 | 2 | 0 | 0 | 20.2 | 20 | 9 | 10 | 0 | 5 | 0 | 1.21 |
1977 | NYY | 2 | 1 | 0 | 1 | 10.38 | 1 | 0 | 0 | 0 | 4.1 | 6 | 5 | 5 | 3 | 0 | 0 | 1.38 |
1978 | NYY | 3 | 3 | 1 | 1 | 4.26 | 10 | 0 | 0 | 0 | 19.0 | 20 | 9 | 9 | 5 | 4 | 0 | 1.26 |
| Career | 22 | 19 | 9 | 6 | 3.26 | 70 | 4 | 1 | 1 | 132.1 | 114 | 48 | 49 | 21 | 35 | 1 | 1.13 |
Astros 
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