Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1969 | HOU | 31 | 31 | 11 | 10 | 3.54 | 200 | 6 | 3 | 0 | 188.1 | 156 | 74 | 80 | 19 | 93 | 7 | 1.32 |
1970 | HOU | 23 | 20 | 3 | 13 | 5.74 | 72 | 2 | 1 | 0 | 111.1 | 118 | 71 | 72 | 9 | 72 | 3 | 1.71 |
1971 | HOU | 10 | 6 | 0 | 6 | 4.78 | 29 | 0 | 0 | 0 | 37.2 | 44 | 20 | 22 | 4 | 20 | 2 | 1.70 |
1972 | HOU | 39 | 5 | 5 | 4 | 3.24 | 83 | 1 | 1 | 3 | 94.1 | 92 | 34 | 39 | 7 | 38 | 3 | 1.38 |
1973 | HOU | 25 | 12 | 4 | 6 | 4.15 | 69 | 4 | 0 | 0 | 99.2 | 83 | 46 | 51 | 10 | 46 | 2 | 1.29 |
1974 | HOU | 34 | 34 | 14 | 10 | 3.54 | 110 | 8 | 3 | 0 | 211.0 | 202 | 83 | 97 | 14 | 89 | 5 | 1.38 |
1975 | HOU | 17 | 13 | 3 | 8 | 5.33 | 56 | 3 | 1 | 0 | 79.1 | 89 | 47 | 52 | 11 | 46 | 2 | 1.70 |
1976 | HOU | 20 | 2 | 5 | 3 | 6.05 | 33 | 0 | 0 | 0 | 41.2 | 44 | 28 | 29 | 4 | 37 | 1 | 1.94 |
1976 | SDP | 11 | 11 | 4 | 3 | 2.94 | 36 | 2 | 0 | 0 | 70.1 | 56 | 23 | 27 | 0 | 42 | 1 | 1.39 |
1976 | TOT | 31 | 13 | 9 | 6 | 4.10 | 69 | 2 | 0 | 0 | 112.0 | 100 | 51 | 56 | 4 | 79 | 2 | 1.60 |
1977 | SDP | 38 | 20 | 6 | 9 | 4.46 | 79 | 0 | 0 | 0 | 151.1 | 144 | 75 | 88 | 17 | 88 | 5 | 1.53 |
1978 | CAL | 24 | 4 | 3 | 4 | 4.02 | 35 | 0 | 0 | 0 | 56.0 | 63 | 25 | 39 | 8 | 31 | 1 | 1.68 |
1979 | SFG | 59 | 3 | 5 | 6 | 3.91 | 82 | 0 | 0 | 2 | 94.1 | 83 | 41 | 46 | 9 | 46 | 4 | 1.37 |
1980 | SFG | 42 | 4 | 5 | 1 | 2.76 | 79 | 0 | 0 | 0 | 107.2 | 80 | 33 | 35 | 8 | 49 | 8 | 1.20 |
1981 | SFG | 22 | 22 | 8 | 8 | 3.76 | 83 | 3 | 1 | 0 | 129.1 | 121 | 54 | 62 | 8 | 57 | 7 | 1.38 |
1982 | PIT | 6 | 4 | 1 | 3 | 8.87 | 8 | 0 | 0 | 0 | 22.1 | 32 | 22 | 23 | 5 | 15 | 1 | 2.10 |
| Career | 401 | 191 | 77 | 94 | 4.07 | 1,054 | 29 | 10 | 5 | 1494.2 | 1,407 | 676 | 762 | 133 | 769 | 52 | 1.46 |
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