| 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 |
| 1984 | Gulf Coast Astros | GCL | Rk | HOU | - | 20 | 2 | 2 | 1.23 | 7 | 4 | 1 | 1 | 3 | 3 | 2 | 29.1 | 22 | 11 | 4 | 1 | 2 | 28 | 1 | 0 | 1 | 0.82 | 6.75 | 0.31 | 0.61 | 8.59 | 3.38 | 14.00 |
| 1984 | Auburn Astros | NYPL | A- | HOU | - | 20 | 5 | 1 | 5.14 | 10 | 3 | 0 | 0 | 7 | 1 | 0 | 28.0 | 31 | 17 | 16 | 4 | 12 | 29 | 3 | 0 | 0 | 1.54 | 9.96 | 1.29 | 3.86 | 9.32 | 5.46 | 2.42 |
| 1985 | Gastonia Jets | SAL | A | - | 21 | 3 | 10 | 4.37 | 33 | 19 | 5 | 2 | 14 | 11 | 1 | 146.1 | 160 | 91 | 71 | 13 | 50 | 118 | 10 | 0 | 0 | 1.44 | 9.84 | 0.80 | 3.08 | 7.26 | 5.60 | 2.36 | |
| 1986 | Asheville Tourists | SAL | A | HOU | - | 22 | 4 | 3 | 1.99 | 19 | 3 | 0 | 0 | 16 | 10 | 3 | 54.1 | 51 | 25 | 12 | 4 | 14 | 50 | 2 | 0 | 1 | 1.20 | 8.45 | 0.66 | 2.32 | 8.28 | 4.14 | 3.57 |
| 1986 | Osceola Astros | FSL | A+ | HOU | - | 22 | 2 | 4 | 7.63 | 11 | 0 | 0 | 0 | 11 | 8 | 1 | 15.1 | 24 | 14 | 13 | 0 | 7 | 10 | 1 | 0 | 1 | 2.02 | 14.09 | 0.00 | 4.11 | 5.87 | 8.22 | 1.43 |
| 1986 | Columbus Astros | Sou | AA | HOU | - | 22 | 1 | 1 | 4.43 | 16 | 0 | 0 | 0 | 16 | 5 | 2 | 22.1 | 22 | 11 | 11 | 3 | 13 | 26 | 0 | 0 | 1 | 1.57 | 8.87 | 1.21 | 5.24 | 10.48 | 4.43 | 2.00 |
| 1987 | Tucson Toros | PCL | AAA | HOU | - | 23 | 1 | 0 | 2.79 | 10 | 0 | 0 | 0 | 10 | 4 | 1 | 9.2 | 7 | 4 | 3 | 0 | 6 | 6 | 0 | 0 | 0 | 1.34 | 6.52 | 0.00 | 5.59 | 5.59 | 3.72 | 1.00 |
| 1987 | Houston Astros | NL | MLB | HOU | 53 | 23 | 5 | 3 | 5.55 | 45 | 0 | 0 | 0 | 45 | 21 | 0 | 48.2 | 60 | 31 | 30 | 8 | 16 | 32 | 1 | 0 | 1 | 1.56 | 11.10 | 1.48 | 2.96 | 5.92 | 5.73 | 2.00 |
| 1988 | Tucson Toros | PCL | AAA | HOU | - | 24 | 3 | 4 | 1.96 | 32 | 0 | 0 | 0 | 32 | 11 | 3 | 46.0 | 45 | 12 | 10 | 0 | 10 | 46 | 1 | 0 | 1 | 1.20 | 8.80 | 0.00 | 1.96 | 9.00 | 2.35 | 4.60 |
| 1988 | Houston Astros | NL | MLB | HOU | 53 | 24 | 3 | 1 | 3.18 | 22 | 2 | 0 | 0 | 20 | 8 | 0 | 39.2 | 37 | 20 | 14 | 4 | 14 | 27 | 1 | 0 | 0 | 1.29 | 8.39 | 0.91 | 3.18 | 6.13 | 4.54 | 1.93 |
| 1989 | Tucson Toros | PCL | AAA | HOU | - | 25 | 0 | 0 | 0.00 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 3.0 | 1 | 0 | 0 | 0 | 1 | 2 | 0 | 0 | 0 | 0.67 | 3.00 | 0.00 | 3.00 | 6.00 | 0.00 | 2.00 |
| 1999 | Gulf Coast Rangers | GCL | Rk | TEX | - | 35 | 1 | 3 | 5.00 | 11 | 7 | 0 | 0 | 4 | 1 | 0 | 36.0 | 40 | 23 | 20 | 5 | 11 | 34 | 3 | 4 | 2 | 1.42 | 10.00 | 1.25 | 2.75 | 8.50 | 5.75 | 3.09 |
| Tot: | MLB (2 yrs) | MLB | 8 | 4 | 4.48 | 67 | 2 | 0 | 0 | 29 | 65 | 0 | 88.1 | 97 | 51 | 44 | 12 | 30 | 59 | 2 | 0 | 1 | 1.44 | 9.88 | 1.22 | 3.06 | 6.01 | 5.20 | 1.97 | ||||
| Tot: | NL (2 yrs) | NL | 8 | 4 | 4.48 | 67 | 2 | 0 | 0 | 29 | 65 | 0 | 88.1 | 97 | 51 | 44 | 12 | 30 | 59 | 2 | 0 | 1 | 1.44 | 9.88 | 1.22 | 3.06 | 6.01 | 5.20 | 1.97 | ||||
| Tot: | Minors (7 yrs) | Minors | 22 | 28 | 3.69 | 150 | 37 | 6 | 3 | 54 | 113 | 13 | 390.1 | 403 | 208 | 160 | 30 | 126 | 349 | 21 | 4 | 7 | 1.36 | 9.29 | 0.69 | 2.91 | 8.05 | 4.80 | 2.77 | ||||
| Tot: | Rk (2 yrs) | Rk | 3 | 5 | 3.31 | 18 | 11 | 1 | 1 | 4 | 7 | 2 | 65.1 | 62 | 34 | 24 | 6 | 13 | 62 | 4 | 4 | 3 | 1.15 | 8.54 | 0.83 | 1.79 | 8.54 | 4.68 | 4.77 | ||||
| Tot: | A- (1 yrs) | A- | 5 | 1 | 5.14 | 10 | 3 | 0 | 0 | 1 | 7 | 0 | 28.0 | 31 | 17 | 16 | 4 | 12 | 29 | 3 | 0 | 0 | 1.54 | 9.96 | 1.29 | 3.86 | 9.32 | 5.46 | 2.42 | ||||
| Tot: | A (2 yrs) | A | 7 | 13 | 3.72 | 52 | 22 | 5 | 2 | 21 | 30 | 4 | 200.2 | 211 | 116 | 83 | 17 | 64 | 168 | 12 | 0 | 1 | 1.37 | 9.46 | 0.76 | 2.87 | 7.53 | 5.20 | 2.63 | ||||
| Tot: | A+ (1 yrs) | A+ | 2 | 4 | 7.63 | 11 | 0 | 0 | 0 | 8 | 11 | 1 | 15.1 | 24 | 14 | 13 | 0 | 7 | 10 | 1 | 0 | 1 | 2.02 | 14.09 | 0.00 | 4.11 | 5.87 | 8.22 | 1.43 | ||||
| Tot: | AA (1 yrs) | AA | 1 | 1 | 4.43 | 16 | 0 | 0 | 0 | 5 | 16 | 2 | 22.1 | 22 | 11 | 11 | 3 | 13 | 26 | 0 | 0 | 1 | 1.57 | 8.87 | 1.21 | 5.24 | 10.48 | 4.43 | 2.00 | ||||
| Tot: | AAA (3 yrs) | AAA | 4 | 4 | 1.99 | 43 | 1 | 0 | 0 | 15 | 42 | 4 | 58.2 | 53 | 16 | 13 | 0 | 17 | 54 | 1 | 0 | 1 | 1.19 | 8.13 | 0.00 | 2.61 | 8.28 | 2.45 | 3.18 | ||||
| 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 |
| 1984 | Gulf Coast Astros | GCL | Rk | HOU | - | 20 | P | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | .000 | 1.000 | .000 | 1.000 | .000 | .000 | .000 | 66.67 | 0.00 | 0.00 | 0.00 | |
| 1984 | Auburn Astros | NYPL | A- | HOU | - | 20 | P | 10 | 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 | |
| 1986 | Asheville Tourists | SAL | A | HOU | - | 22 | P | 19 | 5 | 1 | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 2 | 8 | 0 | 2 | .400 | .571 | .400 | .971 | .400 | .000 | .400 | 25.00 | 0.00 | 0.00 | 0.00 | |
| 1986 | Osceola Astros | FSL | A+ | HOU | - | 22 | P | 11 | 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 | |
| 1987 | Tucson Toros | PCL | AAA | HOU | - | 23 | P | 10 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 100.00 | 0.00 | 0.00 | |
| 1987 | Houston Astros | NL | MLB | HOU | 53 | 23 | P | 45 | 3 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 4 | 0 | 1 | .333 | .500 | .333 | .833 | .333 | .000 | .500 | 25.00 | 25.00 | 1.00 | 0.00 | |
| 1988 | Tucson Toros | PCL | AAA | HOU | - | 24 | P | 32 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 0.00 | 0.00 | 0.00 | |
| 1988 | Houston Astros | NL | MLB | HOU | 53 | 24 | P | 22 | 4 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 6 | 0 | 1 | .250 | .500 | .250 | .750 | .500 | .000 | .500 | 33.33 | 33.33 | 1.00 | 0.00 | |
| 1989 | Tucson Toros | PCL | AAA | HOU | - | 25 | P | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 100.00 | 0.00 | 0.00 | |
| Tot: | MLB (2 yrs) | MLB | 67 | 7 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 2 | 10 | 0 | 2 | .286 | .500 | .286 | .786 | .429 | .000 | .500 | 30.00 | 30.00 | 1.00 | |||||||
| Tot: | NL (2 yrs) | NL | 67 | 7 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 2 | 10 | 0 | 2 | .286 | .500 | .286 | .786 | .429 | .000 | .500 | 30.00 | 30.00 | 1.00 | |||||||
| Tot: | Minors (5 yrs) | Minors | 90 | 10 | 1 | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 4 | 2 | 0 | 4 | 0 | 0 | 0 | 2 | 18 | 0 | 2 | .200 | .429 | .200 | .629 | .400 | .000 | .250 | 22.22 | 11.11 | 0.50 | |||||||
| Tot: | Rk (1 yrs) | Rk | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 1.000 | 66.67 | 0.00 | 0.00 | |||||||||||||
| Tot: | A- (1 yrs) | A- | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0.00 | 0.00 | |||||||||||||||
| Tot: | A (1 yrs) | A | 19 | 5 | 1 | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 2 | 8 | 0 | 2 | .400 | .571 | .400 | .971 | .400 | .000 | .400 | 25.00 | 0.00 | 0.00 | |||||||
| Tot: | A+ (1 yrs) | A+ | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0.00 | 0.00 | |||||||||||||||
| Tot: | AAA (3 yrs) | AAA | 43 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 40.00 | ||||||||
| Avg: | MLB - 162 game avg | MLB | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | ||||||
| Avg: | Minors - 162 game avg | College | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 75 | 76 | 39 | 84 | 39 | 62 | .488 |