Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1967 | PIT | 2 | 2 | 1 | 0 | 3.68 | 7 | 1 | 0 | 0 | 14.2 | 14 | 6 | 6 | 1 | 4 | 1 | 1.23 |
1968 | PIT | 38 | 22 | 8 | 12 | 2.74 | 126 | 3 | 3 | 3 | 170.2 | 136 | 52 | 61 | 5 | 41 | 3 | 1.04 |
1969 | PIT | 44 | 19 | 14 | 3 | 2.91 | 165 | 6 | 1 | 4 | 170.0 | 149 | 55 | 64 | 9 | 62 | 5 | 1.24 |
1970 | PIT | 28 | 27 | 11 | 10 | 3.99 | 119 | 9 | 2 | 0 | 189.2 | 186 | 84 | 88 | 14 | 64 | 3 | 1.32 |
1971 | PIT | 30 | 18 | 11 | 7 | 4.11 | 68 | 3 | 1 | 1 | 140.0 | 169 | 64 | 73 | 12 | 35 | 2 | 1.46 |
1972 | PIT | 31 | 30 | 13 | 10 | 2.91 | 144 | 6 | 3 | 1 | 226.0 | 213 | 73 | 84 | 11 | 47 | 4 | 1.15 |
1973 | PIT | 33 | 29 | 12 | 13 | 3.53 | 111 | 6 | 3 | 0 | 201.1 | 219 | 79 | 86 | 11 | 70 | 4 | 1.44 |
1974 | PIT | 7 | 6 | 1 | 5 | 7.57 | 15 | 0 | 0 | 0 | 35.2 | 59 | 30 | 30 | 4 | 7 | 2 | 1.85 |
1975 | PIT | 23 | 5 | 2 | 2 | 3.72 | 34 | 1 | 0 | 0 | 67.2 | 63 | 28 | 30 | 4 | 25 | 2 | 1.30 |
1976 | PIT | 53 | 2 | 3 | 9 | 3.70 | 38 | 0 | 0 | 10 | 87.2 | 100 | 36 | 44 | 4 | 32 | 4 | 1.51 |
| Career | 289 | 160 | 76 | 71 | 3.50 | 827 | 35 | 13 | 19 | 1303.1 | 1,308 | 507 | 566 | 75 | 387 | 30 | 1.30 |
Cubs 
Reds 
Brewers 
Cardinals 
Pirates 
WSH 
CLE 
Mets 
Phillies 
Padres 
Giants 
Yankees 
Blue Jays 
Tigers 
Rangers 
Angels 
MIN 
CWS 
COL 
TBR 
ATL 
HOU 
