Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1968 | DET | 2 | 0 | 0 | 0 | 3.86 | 4 | 0 | 0 | 0 | 4.2 | 4 | 2 | 2 | 0 | 1 | 0 | 1.07 |
1969 | KCR | 28 | 22 | 4 | 16 | 3.75 | 108 | 8 | 1 | 0 | 158.1 | 136 | 66 | 80 | 13 | 73 | 1 | 1.32 |
1970 | KCR | 38 | 29 | 10 | 15 | 3.54 | 117 | 6 | 3 | 1 | 203.2 | 190 | 80 | 99 | 11 | 102 | 1 | 1.43 |
1971 | KCR | 20 | 7 | 2 | 7 | 5.33 | 31 | 1 | 1 | 0 | 54.0 | 59 | 32 | 35 | 2 | 24 | 1 | 1.54 |
1972 | KCR | 18 | 10 | 5 | 6 | 4.38 | 44 | 4 | 2 | 0 | 72.0 | 78 | 35 | 37 | 3 | 24 | 1 | 1.42 |
1973 | PIT | 41 | 18 | 10 | 6 | 2.85 | 122 | 6 | 3 | 5 | 170.1 | 143 | 54 | 59 | 12 | 52 | 2 | 1.14 |
1974 | PIT | 33 | 33 | 15 | 11 | 2.78 | 139 | 15 | 1 | 0 | 262.2 | 228 | 81 | 93 | 11 | 83 | 4 | 1.18 |
1975 | PIT | 28 | 28 | 13 | 11 | 2.97 | 102 | 7 | 1 | 0 | 196.2 | 177 | 65 | 80 | 16 | 76 | 3 | 1.29 |
1976 | PIT | 30 | 29 | 15 | 8 | 3.35 | 92 | 10 | 1 | 1 | 198.2 | 201 | 74 | 83 | 12 | 72 | 2 | 1.37 |
1977 | PIT | 30 | 30 | 14 | 9 | 3.08 | 89 | 7 | 2 | 0 | 204.1 | 196 | 70 | 87 | 24 | 64 | 0 | 1.27 |
1978 | PIT | 28 | 28 | 9 | 11 | 4.24 | 76 | 1 | 0 | 0 | 163.1 | 160 | 77 | 94 | 13 | 81 | 3 | 1.48 |
1979 | PIT | 19 | 17 | 4 | 7 | 4.60 | 44 | 1 | 0 | 0 | 103.2 | 106 | 53 | 58 | 11 | 39 | 0 | 1.40 |
1980 | PIT | 4 | 4 | 2 | 2 | 3.50 | 8 | 0 | 0 | 0 | 18.0 | 16 | 7 | 7 | 0 | 12 | 0 | 1.56 |
| Career | 319 | 255 | 103 | 109 | 3.46 | 976 | 66 | 15 | 7 | 1810.1 | 1,694 | 696 | 814 | 128 | 703 | 18 | 1.32 |
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