| 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 |
| 1980 | Houston | SWC | NCAA-1 | Fr | 18 | 3 | 5 | 3.41 | 13 | 9 | 5 | 2 | 4 | 0 | 1 | 63.1 | 67 | 25 | 24 | 0 | 32 | 39 | 0 | 0 | 0 | 1.56 | 9.52 | 0.00 | 4.55 | 5.54 | 3.55 | 1.22 | |
| 1981 | Houston | SWC | NCAA-1 | So | 19 | 5 | 1 | 4.07 | 24 | 2 | 0 | 0 | 22 | 0 | 6 | 55.1 | 56 | 31 | 25 | 0 | 32 | 34 | 0 | 0 | 0 | 1.59 | 9.11 | 0.00 | 5.20 | 5.53 | 5.04 | 1.06 | |
| 1982 | Houston | SWC | NCAA-1 | Jr | 20 | 5 | 3 | 3.18 | 20 | 9 | 0 | 0 | 11 | 0 | 0 | 76.1 | 65 | 28 | 27 | 0 | 35 | 47 | 0 | 0 | 0 | 1.31 | 7.66 | 0.00 | 4.13 | 5.54 | 3.30 | 1.34 | |
| 1983 | Houston | SWC | NCAA-1 | Sr | 21 | 12 | 3 | 1.31 | 19 | 8 | 7 | 2 | 11 | 0 | 1 | 102.2 | 73 | 25 | 15 | 0 | 29 | 78 | 0 | 0 | 0 | 0.99 | 6.40 | 0.00 | 2.54 | 6.84 | 2.19 | 2.69 | |
| 1983 | Daytona Astros | FSL | A+ | HOU | - | 21 | 6 | 5 | 3.36 | 14 | 13 | 0 | 0 | 1 | 0 | 0 | 77.2 | 87 | 37 | 29 | 4 | 20 | 43 | 2 | 0 | 2 | 1.38 | 10.08 | 0.46 | 2.32 | 4.98 | 4.29 | 2.15 |
| 1984 | Daytona Astros | FSL | A+ | HOU | - | 22 | 9 | 4 | 2.64 | 29 | 13 | 4 | 1 | 16 | 8 | 0 | 116.0 | 98 | 36 | 34 | 4 | 44 | 67 | 1 | 0 | 2 | 1.22 | 7.60 | 0.31 | 3.41 | 5.20 | 2.79 | 1.52 |
| 1985 | Columbus Astros | Sou | AA | HOU | - | 23 | 6 | 0 | 2.52 | 35 | 1 | 0 | 0 | 34 | 11 | 2 | 75.0 | 70 | 28 | 21 | 6 | 28 | 47 | 2 | 0 | 0 | 1.31 | 8.40 | 0.72 | 3.36 | 5.64 | 3.36 | 1.68 |
| 1986 | Columbus Astros | Sou | AA | HOU | - | 24 | 6 | 4 | 4.52 | 12 | 12 | 0 | 0 | 0 | 0 | 0 | 77.2 | 86 | 43 | 39 | 7 | 22 | 32 | 2 | 0 | 2 | 1.39 | 9.97 | 0.81 | 2.55 | 3.71 | 4.98 | 1.45 |
| 1986 | Tucson Toros | PCL | AAA | HOU | - | 24 | 3 | 3 | 5.40 | 17 | 5 | 0 | 0 | 12 | 4 | 0 | 43.1 | 56 | 30 | 26 | 3 | 22 | 32 | 3 | 0 | 0 | 1.80 | 11.63 | 0.62 | 4.57 | 6.65 | 6.23 | 1.45 |
| 1987 | Tucson Toros | PCL | AAA | HOU | - | 25 | 0 | 1 | 11.37 | 2 | 1 | 0 | 0 | 1 | 0 | 0 | 6.1 | 12 | 8 | 8 | 0 | 4 | 0 | 0 | 0 | 1 | 2.53 | 17.05 | 0.00 | 5.68 | 0.00 | 11.37 | 0.00 |
| 1991 | Houston | SWC | NCAA-1 | 29 | 0 | 0 | 0.00 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ||
| Tot: | Minors (5 yrs) | Minors | 30 | 17 | 3.57 | 109 | 45 | 4 | 1 | 23 | 64 | 2 | 396.0 | 409 | 182 | 157 | 24 | 140 | 221 | 10 | 0 | 7 | 1.39 | 9.30 | 0.55 | 3.18 | 5.02 | 4.14 | 1.58 | ||||
| Tot: | A+ (2 yrs) | A+ | 15 | 9 | 2.93 | 43 | 26 | 4 | 1 | 8 | 17 | 0 | 193.2 | 185 | 73 | 63 | 8 | 64 | 110 | 3 | 0 | 4 | 1.29 | 8.60 | 0.37 | 2.97 | 5.11 | 3.39 | 1.72 | ||||
| Tot: | AA (2 yrs) | AA | 12 | 4 | 3.54 | 47 | 13 | 0 | 0 | 11 | 34 | 2 | 152.2 | 156 | 71 | 60 | 13 | 50 | 79 | 4 | 0 | 2 | 1.35 | 9.20 | 0.77 | 2.95 | 4.66 | 4.19 | 1.58 | ||||
| Tot: | AAA (2 yrs) | AAA | 3 | 4 | 6.16 | 19 | 6 | 0 | 0 | 4 | 13 | 0 | 49.2 | 68 | 38 | 34 | 3 | 26 | 32 | 3 | 0 | 1 | 1.89 | 12.32 | 0.54 | 4.71 | 5.80 | 6.89 | 1.23 | ||||
| Tot: | College (5 yrs) | College | 25 | 12 | 2.75 | 76 | 28 | 12 | 4 | 0 | 48 | 8 | 297.2 | 261 | 109 | 91 | 0 | 128 | 198 | 0 | 0 | 0 | 1.31 | 7.89 | 0.00 | 3.87 | 5.99 | 3.30 | 1.55 | ||||
| Avg: | Minors - 162 Inning avg | College | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | ||||
| Avg: | College - 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 | SWC | NCAA-1 | Fr | 18 | P | 42 | 116 | 29 | 34 | 7 | 2 | 5 | 20 | 2 | 3 | 32 | 17 | 0 | 0 | 0 | 0 | 0 | 60 | 148 | 14 | 20 | .293 | .446 | .517 | .963 | .491 | .224 | .000 | 21.62 | 11.49 | 0.53 | 23.20 | ||
| 1983 | Houston | SWC | NCAA-1 | Sr | 21 | P | 51 | 148 | 40 | 52 | 14 | 0 | 2 | 31 | 8 | 5 | 46 | 17 | 0 | 0 | 0 | 0 | 0 | 72 | 194 | 16 | 36 | .351 | .505 | .486 | .991 | .466 | .135 | .000 | 23.71 | 8.76 | 0.37 | 74.00 | ||
| 1984 | Daytona Astros | FSL | A+ | HOU | - | 22 | P | 29 | 23 | 4 | 6 | 2 | 0 | 0 | 1 | 0 | 0 | 3 | 5 | 0 | 3 | 1 | 0 | 0 | 8 | 30 | 2 | 4 | .261 | .333 | .348 | .681 | .217 | .087 | .316 | 10.00 | 16.67 | 1.67 | 0.00 | |
| 1985 | Columbus Astros | Sou | AA | HOU | - | 23 | P | 38 | 5 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 0 | 1 | .200 | .200 | .200 | .400 | .000 | .000 | .333 | 0.00 | 40.00 | 0.00 | 0.00 | |
| 1986 | Columbus Astros | Sou | AA | HOU | - | 24 | P | 12 | 5 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | 1 | 8 | 0 | 1 | .200 | .500 | .200 | .700 | .400 | .000 | .333 | 25.00 | 25.00 | 1.00 | 0.00 | |
| 1986 | Tucson Toros | PCL | AAA | HOU | - | 24 | P | 17 | 5 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 0 | 1 | .200 | .200 | .200 | .400 | .000 | .000 | .250 | 0.00 | 20.00 | 0.00 | 0.00 | |
| 1987 | Tucson Toros | PCL | AAA | HOU | - | 25 | P | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 0.00 | 0.00 | 0.00 | |
| Tot: | Minors (4 yrs) | Minors | 98 | 38 | 6 | 9 | 2 | 0 | 0 | 1 | 0 | 0 | 5 | 10 | 1 | 4 | 1 | 0 | 0 | 11 | 49 | 2 | 7 | .237 | .333 | .289 | .623 | .184 | .053 | .310 | 10.20 | 20.41 | 2.00 | |||||||
| Tot: | A+ (1 yrs) | A+ | 29 | 23 | 4 | 6 | 2 | 0 | 0 | 1 | 0 | 0 | 3 | 5 | 0 | 3 | 1 | 0 | 0 | 8 | 30 | 2 | 4 | .261 | .333 | .348 | .681 | .217 | .087 | .316 | 10.00 | 16.67 | 1.67 | |||||||
| Tot: | AA (2 yrs) | AA | 50 | 10 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 4 | 1 | 0 | 0 | 0 | 0 | 2 | 13 | 0 | 2 | .200 | .385 | .200 | .585 | .200 | .000 | .333 | 15.38 | 30.77 | 2.00 | |||||||
| Tot: | AAA (2 yrs) | AAA | 19 | 5 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 6 | 0 | 1 | .200 | .200 | .200 | .400 | .000 | .000 | .250 | 0.00 | 16.67 | ||||||||
| Tot: | College (3 yrs) | College | 93 | 264 | 69 | 86 | 21 | 2 | 7 | 51 | 10 | 8 | 78 | 34 | 0 | 0 | 0 | 0 | 0 | 132 | 342 | 30 | 56 | .326 | .480 | .500 | .980 | .477 | .174 | .354 | 22.81 | 9.94 | 0.44 | 37.71 | ||||||
| Avg: | Minors - 162 game avg | College | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | ||||||
| Avg: | College - 162 game avg | College | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 35 | 64 | 48 | 55 | 48 | 61 | .586 |