Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1965 | HOU | 3 | 2 | 0 | 2 | 10.57 | 7 | 0 | 0 | 0 | 7.2 | 11 | 9 | 9 | 1 | 6 | 0 | 2.22 |
1966 | HOU | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.0 | 0 | 1 | 1 | 0 | 1 | 0 | ||
1968 | HOU | 41 | 2 | 2 | 3 | 2.67 | 71 | 1 | 0 | 1 | 81.0 | 65 | 24 | 26 | 5 | 25 | 1 | 1.11 |
1969 | HOU | 40 | 13 | 8 | 2 | 3.91 | 115 | 0 | 0 | 0 | 115.0 | 105 | 50 | 55 | 11 | 48 | 2 | 1.33 |
1970 | HOU | 52 | 2 | 6 | 3 | 3.26 | 67 | 0 | 0 | 5 | 105.0 | 97 | 38 | 39 | 13 | 49 | 0 | 1.39 |
1971 | HOU | 47 | 1 | 10 | 4 | 2.12 | 46 | 0 | 0 | 3 | 97.2 | 72 | 23 | 27 | 3 | 31 | 2 | 1.05 |
1972 | HOU | 54 | 0 | 10 | 9 | 4.28 | 50 | 0 | 0 | 8 | 90.1 | 77 | 43 | 50 | 10 | 44 | 3 | 1.34 |
1973 | HOU | 42 | 0 | 6 | 4 | 4.43 | 25 | 0 | 0 | 6 | 69.0 | 65 | 34 | 37 | 5 | 38 | 3 | 1.49 |
1974 | DET | 28 | 0 | 1 | 3 | 4.47 | 26 | 0 | 0 | 2 | 52.1 | 49 | 26 | 27 | 4 | 29 | 1 | 1.49 |
| Career | 308 | 20 | 43 | 30 | 3.61 | 407 | 1 | 0 | 25 | 618.0 | 541 | 248 | 271 | 52 | 271 | 12 | 1.31 |
Astros 
Mariners 
Rangers 
Athletics 
Angels 
DET 
KCR 
Phillies 
Braves 
Brewers 
Cubs 
Dodgers 
Padres 
Yankees 
Orioles 
Guardians 
MIN 
STL 
CWS 
COL 
TBR 
NYM 
