| 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 |
| 1965 | Houston Astros | NL | MLB | HOU | 21 | 20 | 0 | 2 | 10.57 | 3 | 2 | 0 | 0 | 1 | 1 | 0 | 7.2 | 11 | 9 | 9 | 1 | 6 | 7 | 0 | 0 | 0 | 2.22 | 12.91 | 1.17 | 7.04 | 8.22 | 10.57 | 1.17 |
| 1966 | Houston Astros | NL | MLB | HOU | 38 | 21 | 0 | 0 | 0.00 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0.0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| 1968 | Houston Astros | NL | MLB | HOU | 45 | 23 | 2 | 3 | 2.68 | 41 | 2 | 1 | 0 | 39 | 14 | 1 | 80.2 | 65 | 26 | 24 | 5 | 25 | 71 | 1 | 1 | 1 | 1.12 | 7.25 | 0.56 | 2.79 | 7.92 | 2.90 | 2.84 |
| 1969 | Houston Astros | NL | MLB | HOU | 45 | 24 | 8 | 2 | 3.91 | 40 | 13 | 0 | 0 | 27 | 4 | 0 | 115.0 | 105 | 55 | 50 | 11 | 48 | 115 | 4 | 0 | 2 | 1.33 | 8.22 | 0.86 | 3.76 | 9.00 | 4.30 | 2.40 |
| 1970 | Houston Astros | NL | MLB | HOU | 45 | 25 | 6 | 3 | 3.26 | 52 | 2 | 0 | 0 | 50 | 16 | 5 | 105.0 | 97 | 39 | 38 | 13 | 49 | 67 | 3 | 1 | 0 | 1.39 | 8.31 | 1.11 | 4.20 | 5.74 | 3.34 | 1.37 |
| 1971 | Houston Astros | NL | MLB | HOU | 45 | 26 | 10 | 4 | 2.12 | 47 | 1 | 0 | 0 | 46 | 21 | 3 | 97.2 | 72 | 27 | 23 | 3 | 31 | 46 | 5 | 1 | 2 | 1.05 | 6.63 | 0.28 | 2.86 | 4.24 | 2.49 | 1.48 |
| 1972 | Houston Astros | NL | MLB | HOU | 45 | 27 | 10 | 9 | 4.28 | 54 | 0 | 0 | 0 | 54 | 25 | 8 | 90.1 | 77 | 50 | 43 | 10 | 44 | 50 | 4 | 0 | 3 | 1.34 | 7.67 | 1.00 | 4.38 | 4.98 | 4.98 | 1.14 |
| 1973 | Houston Astros | NL | MLB | HOU | 45 | 28 | 6 | 4 | 4.43 | 42 | 0 | 0 | 0 | 42 | 15 | 6 | 69.0 | 65 | 37 | 34 | 5 | 38 | 25 | 2 | 0 | 3 | 1.49 | 8.48 | 0.65 | 4.96 | 3.26 | 4.83 | 0.66 |
| 1974 | Detroit Tigers | AL | MLB | DET | 36 | 29 | 1 | 3 | 4.47 | 28 | 0 | 0 | 0 | 28 | 19 | 2 | 52.1 | 49 | 27 | 26 | 4 | 29 | 26 | 2 | 0 | 1 | 1.49 | 8.43 | 0.69 | 4.99 | 4.47 | 4.64 | 0.90 |
| Tot: | MLB (9 yrs) | MLB | 43 | 30 | 3.60 | 308 | 20 | 1 | 0 | 115 | 288 | 25 | 617.2 | 541 | 271 | 247 | 52 | 271 | 407 | 21 | 3 | 12 | 1.31 | 7.88 | 0.76 | 3.95 | 5.93 | 3.95 | 1.50 | ||||
| Tot: | NL (8 yrs) | NL | 42 | 27 | 3.52 | 280 | 20 | 1 | 0 | 96 | 260 | 23 | 565.1 | 492 | 244 | 221 | 48 | 242 | 381 | 19 | 3 | 11 | 1.30 | 7.83 | 0.76 | 3.85 | 6.07 | 3.88 | 1.57 | ||||
| Tot: | AL (1 yrs) | AL | 1 | 3 | 4.47 | 28 | 0 | 0 | 0 | 19 | 28 | 2 | 52.1 | 49 | 27 | 26 | 4 | 29 | 26 | 2 | 0 | 1 | 1.49 | 8.43 | 0.69 | 4.99 | 4.47 | 4.64 | 0.90 | ||||
| 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 |
| 1965 | Houston Astros | NL | MLB | HOU | 21 | 20 | P | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 50.00 | 0.00 | 0.00 | |
| 1968 | Houston Astros | NL | MLB | HOU | 45 | 23 | P | 42 | 15 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 0 | 1 | 0 | 0 | 1 | 1 | 16 | 0 | 1 | .067 | .067 | .067 | .134 | .000 | .000 | .125 | 0.00 | 43.75 | 0.00 | 0.00 | |
| 1969 | Houston Astros | NL | MLB | HOU | 45 | 24 | P | 40 | 26 | 1 | 3 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 9 | 1 | 3 | 0 | 0 | 1 | 3 | 30 | 0 | 3 | .115 | .148 | .115 | .263 | .000 | .000 | .176 | 0.00 | 30.00 | 0.00 | 0.00 | |
| 1970 | Houston Astros | NL | MLB | HOU | 45 | 25 | P | 52 | 27 | 1 | 5 | 0 | 0 | 0 | 2 | 0 | 1 | 0 | 9 | 0 | 0 | 0 | 0 | 2 | 5 | 27 | 0 | 5 | .185 | .185 | .185 | .370 | -0.037 | .000 | .278 | 0.00 | 33.33 | 0.00 | 0.00 | |
| 1971 | Houston Astros | NL | MLB | HOU | 45 | 26 | P | 47 | 18 | 1 | 3 | 0 | 0 | 0 | 1 | 0 | 0 | 2 | 4 | 0 | 0 | 0 | 0 | 0 | 3 | 20 | 0 | 3 | .167 | .250 | .167 | .417 | .111 | .000 | .214 | 10.00 | 20.00 | 2.00 | 0.00 | |
| 1972 | Houston Astros | NL | MLB | HOU | 45 | 27 | P | 54 | 16 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 0 | 1 | 0 | 0 | 0 | 1 | 17 | 0 | 1 | .063 | .063 | .063 | .126 | .000 | .000 | .143 | 0.00 | 52.94 | 0.00 | 0.00 | |
| 1973 | Houston Astros | NL | MLB | HOU | 45 | 28 | P | 42 | 13 | 1 | 3 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 4 | 0 | 2 | 0 | 0 | 1 | 3 | 15 | 0 | 3 | .231 | .231 | .231 | .462 | .000 | .000 | .333 | 0.00 | 26.67 | 0.00 | 0.00 | |
| Tot: | MLB (7 yrs) | MLB | 280 | 117 | 4 | 16 | 0 | 0 | 0 | 6 | 0 | 1 | 2 | 43 | 1 | 7 | 0 | 0 | 5 | 16 | 127 | 0 | 16 | .137 | .158 | .137 | .295 | .009 | .000 | .216 | 1.57 | 33.86 | 21.50 | |||||||
| Tot: | NL (7 yrs) | NL | 280 | 117 | 4 | 16 | 0 | 0 | 0 | 6 | 0 | 1 | 2 | 43 | 1 | 7 | 0 | 0 | 5 | 16 | 127 | 0 | 16 | .137 | .158 | .137 | .295 | .009 | .000 | .216 | 1.57 | 33.86 | 21.50 | |||||||
| Avg: | MLB - 162 game avg | MLB | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 51 | 38 | 70 | 43 | 70 | 63 | .473 |