Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1966 | BAL | 31 | 1 | 4 | 3 | 3.55 | 62 | 0 | 0 | 2 | 71.0 | 57 | 28 | 30 | 4 | 29 | 1 | 1.21 |
1967 | BAL | 14 | 14 | 6 | 4 | 3.35 | 71 | 3 | 1 | 0 | 94.0 | 77 | 35 | 38 | 6 | 23 | 1 | 1.06 |
1968 | BAL | 37 | 15 | 6 | 7 | 3.32 | 92 | 3 | 2 | 3 | 124.2 | 116 | 46 | 52 | 9 | 48 | 3 | 1.32 |
1969 | SEA | 40 | 29 | 13 | 14 | 4.36 | 139 | 7 | 1 | 0 | 202.1 | 193 | 98 | 111 | 26 | 103 | 13 | 1.46 |
1970 | MIL | 29 | 21 | 6 | 15 | 6.02 | 76 | 2 | 0 | 1 | 128.2 | 127 | 86 | 94 | 9 | 79 | 2 | 1.60 |
| Career | 151 | 80 | 35 | 43 | 4.25 | 440 | 15 | 4 | 6 | 620.2 | 570 | 293 | 325 | 54 | 282 | 20 | 1.37 |
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