| year | team name | league | level | mlb | # | age | w | l | era | g | gs | cg | sho | gr | gf | sv | ip | h | r | er | hr | bb | so | wp | bk | hb | whip | h9 | hr9 | bb9 | so9 | ra9 | so/bb |
| 1969 | Houston Astros | NL | MLB | HOU | 38 | 21 | 11 | 10 | 3.54 | 31 | 31 | 6 | 3 | 0 | 0 | 0 | 188.1 | 156 | 80 | 74 | 19 | 93 | 200 | 6 | 4 | 7 | 1.32 | 7.45 | 0.91 | 4.44 | 9.56 | 3.82 | 2.15 |
| 1970 | Houston Astros | NL | MLB | HOU | 38 | 22 | 3 | 13 | 5.74 | 23 | 20 | 2 | 1 | 3 | 1 | 0 | 111.1 | 118 | 72 | 71 | 9 | 72 | 72 | 13 | 0 | 3 | 1.71 | 9.54 | 0.73 | 5.82 | 5.82 | 5.82 | 1.00 |
| 1971 | Houston Astros | NL | MLB | HOU | 38 | 23 | 0 | 6 | 4.78 | 10 | 6 | 0 | 0 | 4 | 0 | 0 | 37.2 | 44 | 22 | 20 | 4 | 20 | 29 | 4 | 0 | 2 | 1.70 | 10.51 | 0.96 | 4.78 | 6.93 | 5.26 | 1.45 |
| 1972 | Houston Astros | NL | MLB | HOU | 38 | 24 | 5 | 4 | 3.24 | 39 | 5 | 1 | 1 | 34 | 10 | 3 | 94.1 | 92 | 39 | 34 | 7 | 38 | 83 | 5 | 0 | 3 | 1.38 | 8.78 | 0.67 | 3.63 | 7.92 | 3.72 | 2.18 |
| 1973 | Houston Astros | NL | MLB | HOU | 38 | 25 | 4 | 6 | 4.15 | 25 | 12 | 4 | 0 | 13 | 5 | 0 | 99.2 | 83 | 51 | 46 | 10 | 46 | 69 | 5 | 0 | 2 | 1.29 | 7.49 | 0.90 | 4.15 | 6.23 | 4.61 | 1.50 |
| 1974 | Houston Astros | NL | MLB | HOU | 38 | 26 | 14 | 10 | 3.54 | 34 | 34 | 8 | 3 | 0 | 0 | 0 | 211.0 | 202 | 97 | 83 | 14 | 89 | 110 | 11 | 3 | 5 | 1.38 | 8.62 | 0.60 | 3.80 | 4.69 | 4.14 | 1.24 |
| 1975 | Houston Astros | NL | MLB | HOU | 38 | 27 | 3 | 8 | 5.33 | 17 | 13 | 3 | 1 | 4 | 1 | 0 | 79.1 | 89 | 52 | 47 | 11 | 46 | 56 | 8 | 2 | 2 | 1.70 | 10.10 | 1.25 | 5.22 | 6.35 | 5.90 | 1.22 |
| 1976 | Houston Astros | NL | MLB | HOU | 38 | 28 | 5 | 3 | 6.05 | 20 | 2 | 0 | 0 | 18 | 2 | 0 | 41.2 | 44 | 29 | 28 | 4 | 37 | 33 | 3 | 0 | 1 | 1.94 | 9.50 | 0.86 | 7.99 | 7.13 | 6.26 | 0.89 |
| 1976 | San Diego Padres | NL | MLB | SDN | 34 | 28 | 4 | 3 | 2.94 | 11 | 11 | 2 | 0 | 0 | 0 | 0 | 70.1 | 56 | 27 | 23 | 0 | 42 | 36 | 6 | 0 | 1 | 1.39 | 7.17 | 0.00 | 5.37 | 4.61 | 3.45 | 0.86 |
| 1977 | San Diego Padres | NL | MLB | SDN | 32 | 29 | 6 | 9 | 4.46 | 38 | 20 | 0 | 0 | 18 | 4 | 0 | 151.1 | 144 | 88 | 75 | 17 | 88 | 79 | 4 | 6 | 5 | 1.53 | 8.56 | 1.01 | 5.23 | 4.70 | 5.23 | 0.90 |
| 1978 | California Angels | AL | MLB | CAL | 38 | 30 | 3 | 4 | 4.02 | 24 | 4 | 0 | 0 | 20 | 9 | 0 | 56.0 | 63 | 39 | 25 | 8 | 31 | 35 | 2 | 0 | 1 | 1.68 | 10.13 | 1.29 | 4.98 | 5.63 | 6.27 | 1.13 |
| 1979 | San Francisco Giants | NL | MLB | SFN | 43 | 31 | 5 | 6 | 3.91 | 59 | 3 | 0 | 0 | 56 | 13 | 2 | 94.1 | 83 | 46 | 41 | 9 | 46 | 82 | 5 | 0 | 4 | 1.37 | 7.92 | 0.86 | 4.39 | 7.82 | 4.39 | 1.78 |
| 1980 | San Francisco Giants | NL | MLB | SFN | 43 | 32 | 5 | 1 | 2.76 | 42 | 4 | 0 | 0 | 38 | 8 | 0 | 107.2 | 80 | 35 | 33 | 8 | 49 | 79 | 4 | 3 | 8 | 1.20 | 6.69 | 0.67 | 4.10 | 6.60 | 2.93 | 1.61 |
| 1981 | San Francisco Giants | NL | MLB | SFN | 43 | 33 | 8 | 8 | 3.76 | 22 | 22 | 3 | 1 | 0 | 0 | 0 | 129.1 | 121 | 62 | 54 | 8 | 57 | 83 | 5 | 2 | 7 | 1.38 | 8.42 | 0.56 | 3.97 | 5.78 | 4.31 | 1.46 |
| 1982 | Pittsburgh Pirates | NL | MLB | PIT | 23 | 34 | 1 | 3 | 8.87 | 6 | 4 | 0 | 0 | 2 | 0 | 0 | 22.1 | 32 | 23 | 22 | 5 | 15 | 8 | 0 | 0 | 1 | 2.10 | 12.90 | 2.01 | 6.04 | 3.22 | 9.27 | 0.53 |
| Tot: | MLB (14 yrs) | MLB | 77 | 94 | 4.07 | 401 | 191 | 29 | 10 | 53 | 210 | 5 | 1494.2 | 1407 | 762 | 676 | 133 | 769 | 1054 | 81 | 20 | 52 | 1.46 | 8.47 | 0.80 | 4.63 | 6.35 | 4.59 | 1.37 | ||||
| Tot: | NL (13 yrs) | NL | 74 | 90 | 4.07 | 377 | 187 | 29 | 10 | 44 | 190 | 5 | 1438.2 | 1344 | 723 | 651 | 125 | 738 | 1019 | 79 | 20 | 51 | 1.45 | 8.41 | 0.78 | 4.62 | 6.37 | 4.52 | 1.38 | ||||
| Tot: | AL (1 yrs) | AL | 3 | 4 | 4.02 | 24 | 4 | 0 | 0 | 9 | 20 | 0 | 56.0 | 63 | 39 | 25 | 8 | 31 | 35 | 2 | 0 | 1 | 1.68 | 10.12 | 1.29 | 4.98 | 5.62 | 6.27 | 1.13 | ||||
| Avg: | MLB - 162 Inning avg | MLB | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| year | team name | league | level | mlb | # | age | pos | tbc+ | g | ab | r | h | 2b | 3b | hr | rbi | sb | cs | bb | so | hbp | sh | sf | ibb | gdp | tb | pa | xbh | 1b | avg | obp | slg | ops | seca | iso | babip | bb% | so% | so/bb | ab/hr |
| 1969 | Houston Astros | NL | MLB | HOU | 38 | 21 | P | 31 | 62 | 6 | 9 | 1 | 0 | 2 | 8 | 0 | 0 | 5 | 35 | 0 | 4 | 2 | 0 | 1 | 16 | 73 | 3 | 6 | .145 | .203 | .258 | .461 | .194 | .113 | .259 | 6.85 | 47.95 | 7.00 | 31.00 | |
| 1970 | Houston Astros | NL | MLB | HOU | 38 | 22 | P | 23 | 33 | 1 | 2 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 13 | 0 | 4 | 0 | 0 | 0 | 3 | 38 | 1 | 1 | .061 | .088 | .091 | .179 | .061 | .030 | .100 | 2.63 | 34.21 | 13.00 | 0.00 | |
| 1971 | Houston Astros | NL | MLB | HOU | 38 | 23 | P | 10 | 9 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 0 | 0 | 0 | 0 | 2 | 1 | 10 | 0 | 1 | .111 | .200 | .111 | .311 | .111 | .000 | .143 | 10.00 | 20.00 | 2.00 | 0.00 | |
| 1972 | Houston Astros | NL | MLB | HOU | 38 | 24 | P | 39 | 25 | 3 | 7 | 3 | 0 | 1 | 2 | 0 | 0 | 0 | 9 | 0 | 3 | 0 | 0 | 1 | 13 | 28 | 4 | 3 | .280 | .280 | .520 | .800 | .240 | .240 | .400 | 0.00 | 32.14 | 0.00 | 25.00 | |
| 1973 | Houston Astros | NL | MLB | HOU | 38 | 25 | P | 25 | 28 | 1 | 3 | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 9 | 1 | 4 | 0 | 0 | 1 | 8 | 33 | 3 | 0 | .107 | .138 | .286 | .424 | .179 | .179 | .111 | 0.00 | 27.27 | 0.00 | 28.00 | |
| 1974 | Houston Astros | NL | MLB | HOU | 38 | 26 | P | 37 | 68 | 11 | 20 | 5 | 0 | 2 | 8 | 0 | 0 | 2 | 24 | 1 | 9 | 0 | 0 | 1 | 31 | 80 | 7 | 13 | .294 | .324 | .456 | .780 | .191 | .162 | .429 | 2.50 | 30.00 | 12.00 | 34.00 | |
| 1975 | Houston Astros | NL | MLB | HOU | 38 | 27 | P | 17 | 22 | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 6 | 0 | 2 | 0 | 0 | 1 | 3 | 25 | 0 | 3 | .136 | .174 | .136 | .310 | .045 | .000 | .188 | 4.00 | 24.00 | 6.00 | 0.00 | |
| 1976 | Houston Astros | NL | MLB | HOU | 38 | 28 | P | 20 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 7 | 0 | 0 | .000 | .167 | .000 | .167 | .200 | .000 | .000 | 14.29 | 28.57 | 2.00 | 0.00 | |
| 1976 | San Diego Padres | NL | MLB | SDN | 34 | 28 | P | 12 | 26 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 0 | 3 | 0 | 0 | 0 | 2 | 29 | 0 | 2 | .077 | .077 | .077 | .154 | .000 | .000 | .105 | 0.00 | 24.14 | 0.00 | 0.00 | |
| 1977 | San Diego Padres | NL | MLB | SDN | 32 | 29 | P | 39 | 45 | 2 | 6 | 3 | 0 | 2 | 4 | 0 | 0 | 0 | 23 | 0 | 3 | 1 | 0 | 0 | 15 | 49 | 5 | 1 | .133 | .130 | .333 | .463 | .200 | .200 | .190 | 0.00 | 46.94 | 0.00 | 22.50 | |
| 1979 | San Francisco Giants | NL | MLB | SFN | 43 | 31 | P | 59 | 14 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 0 | 1 | 0 | 0 | 0 | 1 | 15 | 0 | 1 | .071 | .071 | .071 | .142 | .000 | .000 | .125 | 0.00 | 40.00 | 0.00 | 0.00 | |
| 1980 | San Francisco Giants | NL | MLB | SFN | 43 | 32 | P | 44 | 18 | 1 | 2 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 7 | 0 | 2 | 0 | 0 | 0 | 5 | 20 | 1 | 1 | .111 | .111 | .278 | .389 | .167 | .167 | .100 | 0.00 | 35.00 | 0.00 | 18.00 | |
| 1981 | San Francisco Giants | NL | MLB | SFN | 43 | 33 | P | 22 | 41 | 1 | 8 | 1 | 0 | 1 | 5 | 0 | 0 | 2 | 12 | 0 | 6 | 1 | 0 | 1 | 12 | 50 | 2 | 6 | .195 | .227 | .293 | .520 | .146 | .098 | .241 | 4.00 | 24.00 | 6.00 | 41.00 | |
| 1982 | Pittsburgh Pirates | NL | MLB | PIT | 23 | 34 | P | 6 | 9 | 0 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 2 | 9 | 0 | 2 | .222 | .222 | .222 | .444 | .000 | .000 | .333 | 0.00 | 33.33 | 0.00 | 0.00 | |
| Tot: | MLB (13 yrs) | MLB | 384 | 405 | 31 | 66 | 16 | 0 | 10 | 32 | 0 | 0 | 13 | 158 | 2 | 42 | 4 | 0 | 8 | 112 | 466 | 26 | 40 | .163 | .191 | .277 | .468 | .146 | .114 | .232 | 2.79 | 33.91 | 12.15 | 40.50 | ||||||
| Tot: | NL (13 yrs) | NL | 384 | 405 | 31 | 66 | 16 | 0 | 10 | 32 | 0 | 0 | 13 | 158 | 2 | 42 | 4 | 0 | 8 | 112 | 466 | 26 | 40 | .163 | .191 | .277 | .468 | .146 | .114 | .232 | 2.79 | 33.91 | 12.15 | 40.50 | ||||||
| Avg: | MLB - 162 game avg | MLB | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 72 | 20 | 51 | 43 | 51 | 68 | .484 |