| 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 |
| 1977 | Cocoa Astros | FSL | A+ | HOU | - | 20 | 7 | 9 | 4.16 | 23 | 16 | 8 | 0 | 7 | 0 | 0 | 132.0 | 147 | 78 | 61 | 2 | 62 | 49 | 5 | 1 | 0 | 1.58 | 10.02 | 0.14 | 4.23 | 3.34 | 5.32 | 0.79 |
| 1977 | Columbus Astros | Sou | AA | HOU | - | 20 | 2 | 2 | 2.13 | 5 | 5 | 3 | 1 | 0 | 0 | 0 | 38.0 | 25 | 12 | 9 | 2 | 18 | 13 | 2 | 0 | 0 | 1.13 | 5.92 | 0.47 | 4.26 | 3.08 | 2.84 | 0.72 |
| 1978 | Columbus Astros | Sou | AA | HOU | - | 21 | 11 | 10 | 3.66 | 26 | 26 | 14 | 2 | 0 | 0 | 0 | 182.0 | 177 | 88 | 74 | 9 | 77 | 117 | 9 | 0 | 2 | 1.40 | 8.75 | 0.45 | 3.81 | 5.79 | 4.35 | 1.52 |
| 1979 | Charleston Charlies | IL | AAA | HOU | - | 22 | 13 | 14 | 2.98 | 27 | 26 | 14 | 1 | 1 | 0 | 0 | 196.0 | 181 | 76 | 65 | 10 | 52 | 101 | 8 | 0 | 2 | 1.19 | 8.31 | 0.46 | 2.39 | 4.64 | 3.49 | 1.94 |
| 1979 | Houston Astros | NL | MLB | HOU | 34 | 22 | 0 | 0 | 4.50 | 4 | 0 | 0 | 0 | 4 | 2 | 0 | 4.0 | 9 | 2 | 2 | 1 | 2 | 2 | 0 | 0 | 0 | 2.75 | 20.25 | 2.25 | 4.50 | 4.50 | 4.50 | 1.00 |
| 1980 | Tucson Toros | PCL | AAA | HOU | - | 23 | 10 | 5 | 3.59 | 17 | 17 | 9 | 1 | 0 | 0 | 0 | 128.0 | 121 | 62 | 51 | 4 | 44 | 66 | 3 | 0 | 1 | 1.29 | 8.51 | 0.28 | 3.09 | 4.64 | 4.36 | 1.50 |
| 1980 | Houston Astros | NL | MLB | HOU | 26 | 23 | 0 | 4 | 4.35 | 12 | 6 | 0 | 0 | 6 | 1 | 0 | 41.1 | 38 | 23 | 20 | 3 | 16 | 13 | 0 | 0 | 0 | 1.31 | 8.27 | 0.65 | 3.48 | 2.83 | 5.01 | 0.81 |
| 1981 | Tucson Toros | PCL | AAA | HOU | 30 | 24 | 3 | 12 | 6.77 | 22 | 15 | 3 | 1 | 7 | 4 | 1 | 101.0 | 129 | 83 | 76 | 4 | 53 | 55 | 12 | 0 | 2 | 1.80 | 11.50 | 0.36 | 4.72 | 4.90 | 7.40 | 1.04 |
| 1981 | Houston Astros | NL | MLB | HOU | 26 | 24 | 0 | 0 | 9.00 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 4.0 | 9 | 4 | 4 | 0 | 3 | 3 | 0 | 1 | 0 | 3.00 | 20.25 | 0.00 | 6.75 | 6.75 | 9.00 | 1.00 |
| 1982 | Tucson Toros | PCL | AAA | HOU | - | 25 | 4 | 12 | 5.96 | 24 | 22 | 2 | 0 | 2 | 0 | 0 | 131.1 | 153 | 101 | 87 | 3 | 88 | 80 | 10 | 0 | 2 | 1.84 | 10.48 | 0.21 | 6.03 | 5.48 | 6.92 | 0.91 |
| 1982 | Houston Astros | NL | MLB | HOU | 44 | 25 | 0 | 0 | 54.00 | 2 | 0 | 0 | 0 | 2 | 1 | 0 | 1.1 | 10 | 8 | 8 | 0 | 2 | 0 | 0 | 0 | 0 | 9.00 | 67.50 | 0.00 | 13.50 | 0.00 | 54.00 | 0.00 |
| 1983 | Columbus Astros | Sou | AA | HOU | - | 26 | 2 | 7 | 5.69 | 11 | 10 | 0 | 0 | 1 | 0 | 0 | 61.2 | 71 | 43 | 39 | 8 | 30 | 34 | 2 | 0 | 1 | 1.64 | 10.36 | 1.17 | 4.38 | 4.96 | 6.28 | 1.13 |
| 1983 | Tucson Toros | PCL | AAA | HOU | 21 | 26 | 0 | 2 | 7.29 | 5 | 4 | 0 | 0 | 1 | 0 | 0 | 21.0 | 27 | 21 | 17 | 2 | 12 | 13 | 2 | 0 | 1 | 1.86 | 11.57 | 0.86 | 5.14 | 5.57 | 9.00 | 1.08 |
| Tot: | MLB (4 yrs) | MLB | 0 | 4 | 6.04 | 20 | 6 | 0 | 0 | 4 | 14 | 0 | 50.2 | 66 | 37 | 34 | 4 | 23 | 18 | 0 | 1 | 0 | 1.76 | 11.72 | 0.71 | 4.09 | 3.20 | 6.57 | 0.78 | ||||
| Tot: | NL (4 yrs) | NL | 0 | 4 | 6.04 | 20 | 6 | 0 | 0 | 4 | 14 | 0 | 50.2 | 66 | 37 | 34 | 4 | 23 | 18 | 0 | 1 | 0 | 1.76 | 11.72 | 0.71 | 4.09 | 3.20 | 6.57 | 0.78 | ||||
| Tot: | Minors (7 yrs) | Minors | 52 | 73 | 4.35 | 160 | 141 | 53 | 6 | 4 | 19 | 1 | 991.0 | 1031 | 564 | 479 | 44 | 436 | 528 | 53 | 1 | 11 | 1.48 | 9.36 | 0.40 | 3.96 | 4.80 | 5.12 | 1.21 | ||||
| Tot: | A+ (1 yrs) | A+ | 7 | 9 | 4.16 | 23 | 16 | 8 | 0 | 0 | 7 | 0 | 132.0 | 147 | 78 | 61 | 2 | 62 | 49 | 5 | 1 | 0 | 1.58 | 10.02 | 0.14 | 4.23 | 3.34 | 5.32 | 0.79 | ||||
| Tot: | AA (3 yrs) | AA | 15 | 19 | 3.90 | 42 | 41 | 17 | 3 | 0 | 1 | 0 | 281.2 | 273 | 143 | 122 | 19 | 125 | 164 | 13 | 0 | 3 | 1.41 | 8.72 | 0.61 | 3.99 | 5.24 | 4.57 | 1.31 | ||||
| Tot: | AAA (5 yrs) | AAA | 30 | 45 | 4.61 | 95 | 84 | 28 | 3 | 4 | 11 | 1 | 577.1 | 611 | 343 | 296 | 23 | 249 | 315 | 35 | 0 | 8 | 1.49 | 9.52 | 0.36 | 3.88 | 4.91 | 5.35 | 1.27 | ||||
| Avg: | MLB - 162 Inning avg | MLB | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | ||||
| Avg: | Minors - 162 Inning avg | College | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 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 |
| 1980 | Houston Astros | NL | MLB | HOU | 26 | 23 | P | 12 | 10 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 0 | 0 | .000 | .091 | .000 | .091 | .100 | .000 | .000 | 9.09 | 45.45 | 5.00 | 0.00 | |
| Tot: | MLB (1 yrs) | MLB | 12 | 10 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 0 | 0 | .000 | .091 | .000 | .091 | .100 | .000 | .000 | 9.09 | 45.45 | 5.00 | |||||||
| Tot: | NL (1 yrs) | NL | 12 | 10 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 0 | 0 | .000 | .091 | .000 | .091 | .100 | .000 | .000 | 9.09 | 45.45 | 5.00 | |||||||
| Tot: | Minors (1 yrs) | Minors | 28 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||||||
| Tot: | A+ (1 yrs) | A+ | 23 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||||||
| Tot: | AA (1 yrs) | AA | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||||||
| Avg: | MLB - 162 game avg | MLB | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | ||||||
| Avg: | Minors - 162 game avg | College | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 25 | 54 | 45 | 37 | 45 | 50 | .492 |