Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1960 | DET | 17 | 7 | 0 | 4 | 4.50 | 38 | 0 | 0 | 1 | 68.0 | 70 | 34 | 39 | 11 | 25 | 2 | 1.40 |
| 1961 | DET | 32 | 16 | 10 | 7 | 5.25 | 46 | 6 | 0 | 2 | 120.0 | 134 | 70 | 70 | 19 | 41 | 1 | 1.46 |
| 1962 | DET | 35 | 23 | 11 | 9 | 4.04 | 87 | 6 | 0 | 0 | 171.1 | 169 | 77 | 89 | 23 | 64 | 1 | 1.36 |
| 1963 | DET | 38 | 27 | 15 | 9 | 3.86 | 115 | 5 | 1 | 1 | 189.0 | 179 | 81 | 95 | 33 | 59 | 7 | 1.26 |
| 1964 | DET | 32 | 21 | 5 | 10 | 5.03 | 91 | 2 | 0 | 1 | 146.2 | 162 | 82 | 87 | 21 | 49 | 5 | 1.44 |
| 1965 | DET | 16 | 7 | 1 | 5 | 5.05 | 37 | 1 | 0 | 0 | 51.2 | 57 | 29 | 31 | 6 | 20 | 0 | 1.49 |
| 1966 | LAD | 65 | 0 | 14 | 1 | 1.62 | 88 | 0 | 0 | 21 | 116.2 | 85 | 21 | 24 | 6 | 24 | 0 | 0.93 |
| 1967 | LAD | 55 | 3 | 6 | 9 | 2.99 | 53 | 0 | 0 | 6 | 96.1 | 108 | 32 | 38 | 2 | 32 | 2 | 1.45 |
| 1968 | LAD | 5 | 0 | 2 | 0 | 3.52 | 7 | 0 | 0 | 0 | 7.2 | 10 | 3 | 3 | 1 | 1 | 0 | 1.43 |
| 1968 | CHC | 68 | 0 | 10 | 5 | 2.20 | 60 | 0 | 0 | 25 | 127.0 | 109 | 31 | 36 | 9 | 24 | 2 | 1.05 |
| 1968 | TOT | 73 | 0 | 12 | 5 | 2.27 | 67 | 0 | 0 | 25 | 134.2 | 119 | 34 | 39 | 10 | 25 | 2 | 1.07 |
| 1969 | CHC | 71 | 0 | 12 | 6 | 3.70 | 56 | 0 | 0 | 17 | 112.0 | 120 | 46 | 49 | 6 | 35 | 2 | 1.38 |
| 1970 | CHC | 54 | 0 | 5 | 9 | 4.76 | 31 | 0 | 0 | 12 | 75.2 | 81 | 40 | 43 | 8 | 32 | 1 | 1.49 |
| 1971 | CHC | 48 | 1 | 5 | 5 | 3.93 | 28 | 0 | 0 | 6 | 73.1 | 84 | 32 | 37 | 4 | 33 | 2 | 1.60 |
| 1972 | CHC | 5 | 0 | 0 | 1 | 2.25 | 2 | 0 | 0 | 0 | 4.0 | 6 | 1 | 1 | 0 | 2 | 0 | 2.00 |
| 1972 | CWS | 10 | 0 | 0 | 1 | 4.05 | 4 | 0 | 0 | 0 | 13.1 | 18 | 6 | 7 | 1 | 6 | 1 | 1.80 |
| 1972 | TOT | 15 | 0 | 0 | 2 | 3.63 | 6 | 0 | 0 | 0 | 17.1 | 24 | 7 | 8 | 1 | 8 | 1 | 1.85 |
| Career | 551 | 105 | 96 | 81 | 3.84 | 743 | 20 | 1 | 92 | 1372.2 | 1,392 | 585 | 649 | 150 | 447 | 26 | 1.34 |
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