| 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 |
| 1978 | Oral Roberts | IndyNCAA | NCAA-1 | Sr | 21 | 14 | 1 | 2.32 | 16 | 16 | 12 | 3 | 0 | 0 | 0 | 124.0 | 95 | 40 | 32 | 0 | 59 | 109 | 0 | 0 | 0 | 1.24 | 6.90 | 0.00 | 4.28 | 7.91 | 2.90 | 1.85 | |
| 1978 | Gulf Coast Astros | GCL | Rk | HOU | - | 21 | 2 | 0 | 3.00 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 12.0 | 12 | 6 | 4 | 0 | 3 | 6 | 2 | 0 | 2 | 1.25 | 9.00 | 0.00 | 2.25 | 4.50 | 4.50 | 2.00 |
| 1978 | Daytona Astros | FSL | A+ | HOU | - | 21 | 3 | 6 | 4.34 | 9 | 9 | 4 | 1 | 0 | 0 | 0 | 56.0 | 59 | 28 | 27 | 3 | 17 | 31 | 0 | 0 | 3 | 1.36 | 9.48 | 0.48 | 2.73 | 4.98 | 4.50 | 1.82 |
| 1979 | Columbus Astros | Sou | AA | HOU | - | 22 | 9 | 11 | 4.29 | 26 | 23 | 8 | 3 | 3 | 0 | 1 | 149.0 | 150 | 75 | 71 | 14 | 78 | 63 | 4 | 0 | 6 | 1.53 | 9.06 | 0.85 | 4.71 | 3.81 | 4.53 | 0.81 |
| 1980 | Columbus Astros | Sou | AA | HOU | - | 23 | 9 | 5 | 2.54 | 25 | 17 | 7 | 2 | 8 | 0 | 0 | 145.0 | 143 | 48 | 41 | 14 | 40 | 82 | 3 | 0 | 4 | 1.26 | 8.88 | 0.87 | 2.48 | 5.09 | 2.98 | 2.05 |
| 1981 | Tucson Toros | PCL | AAA | HOU | - | 24 | 7 | 6 | 5.45 | 34 | 16 | 3 | 0 | 18 | 9 | 1 | 132.0 | 166 | 93 | 80 | 15 | 63 | 70 | 4 | 0 | 8 | 1.73 | 11.32 | 1.02 | 4.30 | 4.77 | 6.34 | 1.11 |
| 1982 | Hawaii Islanders | PCL | AAA | SDN | - | 25 | 6 | 2 | 3.80 | 37 | 4 | 1 | 0 | 33 | 16 | 1 | 111.1 | 105 | 53 | 47 | 14 | 41 | 68 | 8 | 0 | 2 | 1.31 | 8.49 | 1.13 | 3.31 | 5.50 | 4.28 | 1.66 |
| 1983 | Tucson Toros | PCL | AAA | HOU | 1 | 26 | 2 | 3 | 6.43 | 37 | 8 | 0 | 0 | 29 | 16 | 5 | 91.0 | 128 | 74 | 65 | 10 | 33 | 59 | 3 | 0 | 0 | 1.77 | 12.66 | 0.99 | 3.26 | 5.84 | 7.32 | 1.79 |
| 1984 | Iowa Cubs | Amer | AAA | CHN | - | 27 | 7 | 3 | 3.17 | 49 | 5 | 0 | 0 | 44 | 24 | 8 | 93.2 | 88 | 33 | 33 | 7 | 33 | 78 | 2 | 0 | 0 | 1.29 | 8.46 | 0.67 | 3.17 | 7.49 | 3.17 | 2.36 |
| 1984 | Chicago Cubs | NL | MLB | CHN | 38 | 27 | 0 | 0 | 3.38 | 3 | 0 | 0 | 0 | 3 | 0 | 0 | 5.1 | 6 | 5 | 2 | 1 | 2 | 4 | 1 | 0 | 0 | 1.50 | 10.13 | 1.69 | 3.38 | 6.75 | 8.44 | 2.00 |
| 1985 | Iowa Cubs | Amer | AAA | CHN | - | 28 | 4 | 1 | 1.32 | 25 | 0 | 0 | 0 | 25 | 19 | 7 | 41.0 | 29 | 9 | 6 | 0 | 7 | 29 | 0 | 0 | 0 | 0.88 | 6.37 | 0.00 | 1.54 | 6.37 | 1.98 | 4.14 |
| 1985 | Chicago Cubs | NL | MLB | CHN | 38 | 28 | 3 | 2 | 4.47 | 32 | 0 | 0 | 0 | 32 | 8 | 1 | 46.1 | 53 | 24 | 23 | 3 | 24 | 23 | 0 | 0 | 1 | 1.66 | 10.29 | 0.58 | 4.66 | 4.47 | 4.66 | 0.96 |
| 1986 | Iowa Cubs | Amer | AAA | CHN | - | 29 | 7 | 7 | 4.42 | 34 | 17 | 0 | 0 | 17 | 10 | 3 | 118.0 | 125 | 63 | 58 | 6 | 52 | 60 | 13 | 0 | 0 | 1.50 | 9.53 | 0.46 | 3.97 | 4.58 | 4.81 | 1.15 |
| 1986 | Texas Rangers | AL | MLB | TEX | 38 | 29 | 1 | 0 | 3.00 | 5 | 0 | 0 | 0 | 5 | 0 | 0 | 3.0 | 2 | 1 | 1 | 0 | 1 | 2 | 0 | 0 | 0 | 1.00 | 6.00 | 0.00 | 3.00 | 6.00 | 3.00 | 2.00 |
| 1987 | Toledo Mud Hens | IL | AAA | DET | - | 30 | 1 | 1 | 6.23 | 4 | 3 | 0 | 0 | 1 | 0 | 0 | 17.1 | 28 | 13 | 12 | 2 | 3 | 7 | 1 | 0 | 0 | 1.79 | 14.54 | 1.04 | 1.56 | 3.63 | 6.75 | 2.33 |
| 1987 | Oklahoma City 89ers | Amer | AAA | TEX | - | 30 | 1 | 0 | 0.00 | 7 | 0 | 0 | 0 | 7 | 5 | 0 | 12.1 | 10 | 2 | 0 | 0 | 5 | 5 | 0 | 0 | 0 | 1.22 | 7.30 | 0.00 | 3.65 | 3.65 | 1.46 | 1.00 |
| 1987 | Texas Rangers | AL | MLB | TEX | 38 | 30 | 1 | 0 | 6.10 | 11 | 0 | 0 | 0 | 11 | 0 | 0 | 20.2 | 25 | 18 | 14 | 7 | 12 | 17 | 0 | 0 | 0 | 1.79 | 10.89 | 3.05 | 5.23 | 7.40 | 7.84 | 1.42 |
| 1988 | Louisville Redbirds | Amer | AAA | SLN | - | 31 | 0 | 0 | 9.00 | 4 | 0 | 0 | 0 | 4 | 0 | 0 | 4.0 | 7 | 4 | 4 | 1 | 1 | 0 | 1 | 0 | 1 | 2.00 | 15.75 | 2.25 | 2.25 | 0.00 | 9.00 | 0.00 |
| Tot: | MLB (4 yrs) | MLB | 5 | 2 | 4.78 | 51 | 0 | 0 | 0 | 8 | 51 | 1 | 75.1 | 86 | 48 | 40 | 11 | 39 | 46 | 1 | 0 | 1 | 1.66 | 10.27 | 1.31 | 4.66 | 5.50 | 5.73 | 1.18 | ||||
| Tot: | NL (2 yrs) | NL | 3 | 2 | 4.35 | 35 | 0 | 0 | 0 | 8 | 35 | 1 | 51.2 | 59 | 29 | 25 | 4 | 26 | 27 | 1 | 0 | 1 | 1.65 | 10.28 | 0.70 | 4.53 | 4.70 | 5.05 | 1.04 | ||||
| Tot: | AL (2 yrs) | AL | 2 | 0 | 5.70 | 16 | 0 | 0 | 0 | 0 | 16 | 0 | 23.2 | 27 | 19 | 15 | 7 | 13 | 19 | 0 | 0 | 0 | 1.69 | 10.27 | 2.66 | 4.94 | 7.23 | 7.23 | 1.46 | ||||
| Tot: | Minors (11 yrs) | Minors | 58 | 45 | 4.10 | 293 | 104 | 23 | 6 | 99 | 189 | 26 | 982.2 | 1050 | 501 | 448 | 86 | 376 | 558 | 41 | 0 | 26 | 1.45 | 9.62 | 0.79 | 3.44 | 5.11 | 4.59 | 1.48 | ||||
| Tot: | Rk (1 yrs) | Rk | 2 | 0 | 3.00 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 12.0 | 12 | 6 | 4 | 0 | 3 | 6 | 2 | 0 | 2 | 1.25 | 9.00 | 0.00 | 2.25 | 4.50 | 4.50 | 2.00 | ||||
| Tot: | A+ (1 yrs) | A+ | 3 | 6 | 4.34 | 9 | 9 | 4 | 1 | 0 | 0 | 0 | 56.0 | 59 | 28 | 27 | 3 | 17 | 31 | 0 | 0 | 3 | 1.36 | 9.48 | 0.48 | 2.73 | 4.98 | 4.50 | 1.82 | ||||
| Tot: | AA (2 yrs) | AA | 18 | 16 | 3.43 | 51 | 40 | 15 | 5 | 0 | 11 | 1 | 294.0 | 293 | 123 | 112 | 28 | 118 | 145 | 7 | 0 | 10 | 1.40 | 8.97 | 0.86 | 3.61 | 4.44 | 3.77 | 1.23 | ||||
| Tot: | AAA (8 yrs) | AAA | 35 | 23 | 4.42 | 231 | 53 | 4 | 0 | 99 | 178 | 25 | 620.2 | 686 | 344 | 305 | 55 | 238 | 376 | 32 | 0 | 11 | 1.49 | 9.95 | 0.80 | 3.45 | 5.45 | 4.99 | 1.58 | ||||
| Tot: | College (1 yrs) | College | 14 | 1 | 2.32 | 16 | 16 | 12 | 3 | 0 | 0 | 0 | 124.0 | 95 | 40 | 32 | 0 | 59 | 109 | 0 | 0 | 0 | 1.24 | 6.90 | 0.00 | 4.28 | 7.91 | 2.90 | 1.85 | ||||
| Avg: | MLB - 162 Inning avg | MLB | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | ||||
| 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 |
| 1983 | Tucson Toros | PCL | AAA | HOU | 1 | 26 | P | 39 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 33.33 | 0.00 | 0.00 | |
| 1984 | Iowa Cubs | Amer | AAA | CHN | - | 27 | P | 49 | 7 | 3 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 4 | 7 | 0 | 4 | .571 | .571 | .571 | 1.142 | .000 | .000 | .667 | 0.00 | 14.29 | 0.00 | 0.00 | |
| 1985 | Iowa Cubs | Amer | AAA | CHN | - | 28 | P | 25 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 50.00 | 0.00 | 0.00 | |
| 1985 | Chicago Cubs | NL | MLB | CHN | 38 | 28 | P | 32 | 4 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 0 | 1 | .250 | .400 | .250 | .650 | .250 | .000 | .333 | 20.00 | 20.00 | 1.00 | 0.00 | |
| 1986 | Iowa Cubs | Amer | AAA | CHN | - | 29 | P | 35 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 2 | 0 | 0 | 0 | 0 | 8 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 12.50 | 0.00 | 0.00 | |
| Tot: | MLB (1 yrs) | MLB | 32 | 4 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 0 | 1 | .250 | .400 | .250 | .650 | .250 | .000 | .333 | 20.00 | 20.00 | 1.00 | |||||||
| Tot: | NL (1 yrs) | NL | 32 | 4 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 0 | 1 | .250 | .400 | .250 | .650 | .250 | .000 | .333 | 20.00 | 20.00 | 1.00 | |||||||
| Tot: | Minors (5 yrs) | Minors | 176 | 17 | 5 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 3 | 0 | 0 | 0 | 4 | 20 | 0 | 4 | .235 | .235 | .235 | .471 | .000 | .000 | .308 | 0.00 | 20.00 | ||||||||
| Tot: | AA (1 yrs) | AA | 28 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||||||
| Tot: | AAA (4 yrs) | AAA | 148 | 17 | 3 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 3 | 0 | 0 | 0 | 4 | 20 | 0 | 4 | .235 | .235 | .235 | .471 | .000 | .000 | .308 | 0.00 | 20.00 | ||||||||
| Avg: | MLB - 162 game avg | MLB | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | ||||||
| Avg: | Minors - 162 game avg | College | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 39 | 63 | 41 | 55 | 41 | 51 | .498 |