Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1969 | KCR | 41 | 26 | 11 | 13 | 3.77 | 108 | 10 | 2 | 1 | 200.2 | 190 | 84 | 95 | 19 | 65 | 2 | 1.27 |
1970 | KCR | 35 | 34 | 9 | 15 | 3.75 | 127 | 7 | 1 | 0 | 240.0 | 239 | 100 | 110 | 20 | 72 | 7 | 1.30 |
1971 | KCR | 35 | 34 | 17 | 11 | 2.98 | 109 | 15 | 4 | 0 | 241.1 | 251 | 80 | 84 | 14 | 46 | 9 | 1.23 |
1972 | KCR | 34 | 33 | 12 | 17 | 3.01 | 135 | 11 | 2 | 0 | 239.1 | 230 | 80 | 88 | 22 | 51 | 6 | 1.17 |
1973 | KCR | 37 | 33 | 12 | 14 | 4.23 | 98 | 10 | 1 | 0 | 212.2 | 252 | 100 | 116 | 16 | 76 | 7 | 1.54 |
1974 | BOS | 33 | 18 | 7 | 10 | 3.48 | 90 | 8 | 0 | 3 | 175.2 | 165 | 68 | 71 | 17 | 56 | 5 | 1.26 |
1975 | BOS | 40 | 2 | 2 | 2 | 3.84 | 43 | 0 | 0 | 15 | 72.2 | 69 | 31 | 31 | 5 | 31 | 0 | 1.38 |
1976 | CAL | 43 | 0 | 7 | 8 | 4.42 | 43 | 0 | 0 | 6 | 79.1 | 80 | 39 | 42 | 7 | 31 | 5 | 1.40 |
1977 | CAL | 13 | 0 | 0 | 1 | 3.00 | 15 | 0 | 0 | 2 | 21.0 | 22 | 7 | 8 | 3 | 3 | 0 | 1.19 |
1977 | BAL | 36 | 0 | 6 | 3 | 3.63 | 20 | 0 | 0 | 3 | 39.2 | 49 | 16 | 19 | 2 | 15 | 1 | 1.61 |
1977 | TOT | 49 | 0 | 6 | 4 | 3.41 | 35 | 0 | 0 | 5 | 60.2 | 71 | 23 | 27 | 5 | 18 | 1 | 1.47 |
1978 | BOS | 37 | 1 | 4 | 4 | 3.03 | 42 | 0 | 0 | 7 | 77.1 | 71 | 26 | 30 | 5 | 32 | 4 | 1.33 |
1979 | BOS | 53 | 1 | 10 | 6 | 3.03 | 67 | 0 | 0 | 13 | 89.0 | 85 | 30 | 33 | 6 | 21 | 3 | 1.19 |
1980 | BOS | 43 | 7 | 7 | 7 | 4.14 | 63 | 1 | 0 | 3 | 132.2 | 127 | 61 | 67 | 17 | 44 | 5 | 1.29 |
1981 | SEA | 39 | 0 | 4 | 6 | 5.53 | 27 | 0 | 0 | 5 | 53.2 | 71 | 33 | 33 | 4 | 15 | 0 | 1.60 |
| Career | 519 | 189 | 108 | 117 | 3.62 | 987 | 62 | 10 | 58 | 1875.0 | 1,901 | 755 | 827 | 157 | 558 | 54 | 1.31 |
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