Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1963 | MIL | 2 | 0 | 0 | 0 | 12.00 | 6 | 0 | 0 | 0 | 3.0 | 7 | 4 | 4 | 0 | 2 | 0 | 3.00 |
1964 | MIL | 28 | 13 | 9 | 5 | 4.24 | 70 | 3 | 1 | 2 | 116.2 | 113 | 55 | 58 | 15 | 51 | 0 | 1.41 |
1965 | MIL | 38 | 36 | 16 | 10 | 3.77 | 117 | 10 | 1 | 1 | 224.2 | 200 | 94 | 103 | 17 | 116 | 5 | 1.41 |
1966 | ATL | 16 | 12 | 3 | 7 | 5.32 | 34 | 0 | 0 | 0 | 67.2 | 71 | 40 | 42 | 5 | 25 | 2 | 1.42 |
1967 | ATL | 10 | 4 | 1 | 0 | 4.62 | 20 | 0 | 0 | 0 | 25.1 | 27 | 13 | 13 | 1 | 21 | 1 | 1.89 |
1967 | HOU | 15 | 14 | 4 | 7 | 5.96 | 46 | 0 | 0 | 0 | 77.0 | 91 | 51 | 57 | 9 | 27 | 2 | 1.53 |
1967 | TOT | 25 | 18 | 5 | 7 | 5.63 | 66 | 0 | 0 | 0 | 102.1 | 118 | 64 | 70 | 10 | 48 | 3 | 1.62 |
1968 | HOU | 22 | 2 | 1 | 2 | 4.75 | 22 | 0 | 0 | 1 | 36.0 | 45 | 19 | 21 | 3 | 10 | 0 | 1.53 |
1969 | HOU | 26 | 5 | 0 | 5 | 5.37 | 33 | 0 | 0 | 1 | 52.0 | 66 | 31 | 47 | 4 | 33 | 2 | 1.90 |
1970 | HOU | 13 | 13 | 3 | 3 | 3.48 | 55 | 1 | 0 | 0 | 77.2 | 76 | 30 | 34 | 4 | 23 | 2 | 1.27 |
1971 | HOU | 30 | 28 | 9 | 11 | 4.60 | 93 | 2 | 0 | 0 | 158.1 | 177 | 81 | 90 | 11 | 45 | 13 | 1.40 |
1972 | HOU | 10 | 0 | 0 | 0 | 8.64 | 9 | 0 | 0 | 0 | 8.1 | 4 | 8 | 9 | 1 | 8 | 2 | 1.44 |
1972 | NYY | 12 | 1 | 0 | 1 | 4.24 | 7 | 0 | 0 | 0 | 17.0 | 14 | 8 | 8 | 5 | 11 | 1 | 1.47 |
1972 | TOT | 22 | 1 | 0 | 1 | 5.68 | 16 | 0 | 0 | 0 | 25.1 | 18 | 16 | 17 | 6 | 19 | 3 | 1.46 |
| Career | 222 | 128 | 46 | 51 | 4.52 | 512 | 16 | 2 | 5 | 863.2 | 891 | 434 | 486 | 75 | 372 | 30 | 1.46 |
Astros 
Mariners 
Rangers 
Athletics 
Angels 
NYM 
SFG 
Phillies 
Braves 
Brewers 
Cubs 
Dodgers 
Padres 
Yankees 
Orioles 
Guardians 
Royals 
PIT 
MIA 
WSH 
BOS 
