Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1966 | WSH | 66 | 0 | 4 | 5 | 3.50 | 46 | 0 | 0 | 7 | 113.0 | 104 | 44 | 53 | 6 | 35 | 4 | 1.23 |
1967 | WSH | 54 | 0 | 7 | 4 | 2.96 | 32 | 0 | 0 | 1 | 73.0 | 67 | 24 | 33 | 2 | 21 | 4 | 1.21 |
1968 | WSH | 4 | 0 | 0 | 1 | 2.35 | 4 | 0 | 0 | 0 | 7.2 | 7 | 2 | 2 | 0 | 0 | 0 | 0.91 |
1969 | WSH | 52 | 13 | 12 | 7 | 2.78 | 73 | 4 | 0 | 0 | 171.2 | 161 | 53 | 62 | 15 | 64 | 1 | 1.31 |
1970 | WSH | 37 | 30 | 8 | 12 | 4.45 | 68 | 1 | 0 | 1 | 192.1 | 211 | 95 | 108 | 27 | 44 | 4 | 1.33 |
1971 | WSH | 54 | 11 | 5 | 7 | 3.98 | 43 | 0 | 0 | 7 | 124.1 | 131 | 55 | 69 | 9 | 40 | 7 | 1.38 |
1972 | TEX | 35 | 4 | 3 | 5 | 4.41 | 27 | 0 | 0 | 4 | 65.1 | 73 | 32 | 41 | 7 | 26 | 1 | 1.52 |
1972 | NYY | 5 | 1 | 0 | 1 | 4.63 | 4 | 0 | 0 | 0 | 11.2 | 13 | 6 | 6 | 0 | 3 | 2 | 1.37 |
1972 | TOT | 40 | 5 | 3 | 6 | 4.44 | 31 | 0 | 0 | 4 | 77.0 | 86 | 38 | 47 | 7 | 29 | 3 | 1.49 |
1973 | NYY | 1 | 0 | 0 | 0 | 6.00 | 0 | 0 | 0 | 0 | 3.0 | 5 | 2 | 3 | 0 | 1 | 2 | 2.00 |
| Career | 308 | 59 | 39 | 42 | 3.70 | 297 | 5 | 0 | 20 | 762.0 | 772 | 313 | 377 | 66 | 234 | 25 | 1.32 |
Astros 
Mariners 
Rangers 
Athletics 
Angels 
BOS 
CIN 
Phillies 
Braves 
Brewers 
Cubs 
Dodgers 
Padres 
Yankees 
Orioles 
Guardians 
Royals 
PIT 
MIA 
WSH 
