| 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 |
| 1985 | Gulf Coast Rangers | GCL | Rk | TEX | - | 22 | 2 | 2 | 0.96 | 19 | 0 | 0 | 0 | 19 | 14 | 6 | 37.2 | 25 | 8 | 4 | 0 | 14 | 49 | 2 | 0 | 0 | 1.04 | 5.97 | 0.00 | 3.35 | 11.71 | 1.91 | 3.50 |
| 1986 | Salem Redbirds | Caro | A+ | TEX | - | 23 | 4 | 4 | 3.93 | 37 | 0 | 0 | 0 | 37 | 30 | 11 | 52.2 | 48 | 25 | 23 | 4 | 20 | 49 | 3 | 0 | 3 | 1.29 | 8.20 | 0.68 | 3.42 | 8.37 | 4.27 | 2.45 |
| 1986 | Tulsa Drillers | Tex | AA | TEX | - | 23 | 2 | 0 | 3.45 | 24 | 1 | 0 | 0 | 23 | 12 | 2 | 47.0 | 41 | 22 | 18 | 2 | 32 | 48 | 4 | 0 | 2 | 1.55 | 7.85 | 0.38 | 6.13 | 9.19 | 4.21 | 1.50 |
| 1987 | Tulsa Drillers | Tex | AA | TEX | - | 24 | 3 | 3 | 2.98 | 28 | 0 | 0 | 0 | 28 | 25 | 15 | 45.1 | 34 | 18 | 15 | 5 | 10 | 46 | 1 | 0 | 1 | 0.97 | 6.75 | 0.99 | 1.99 | 9.13 | 3.57 | 4.60 |
| 1987 | Oklahoma City 89ers | Amer | AAA | TEX | - | 24 | 2 | 4 | 4.10 | 28 | 0 | 0 | 0 | 28 | 15 | 3 | 37.1 | 36 | 20 | 17 | 0 | 16 | 34 | 0 | 0 | 1 | 1.39 | 8.68 | 0.00 | 3.86 | 8.20 | 4.82 | 2.13 |
| 1987 | Texas Rangers | AL | MLB | TEX | 50 | 24 | 0 | 0 | 6.00 | 3 | 0 | 0 | 0 | 3 | 1 | 0 | 3.0 | 3 | 2 | 2 | 2 | 1 | 3 | 0 | 0 | 0 | 1.33 | 9.00 | 6.00 | 3.00 | 9.00 | 6.00 | 3.00 |
| 1988 | Oklahoma City 89ers | Amer | AAA | TEX | - | 25 | 6 | 5 | 2.87 | 38 | 0 | 0 | 0 | 38 | 34 | 13 | 59.2 | 50 | 21 | 19 | 3 | 22 | 42 | 4 | 0 | 5 | 1.21 | 7.54 | 0.45 | 3.32 | 6.34 | 3.17 | 1.91 |
| 1989 | Oklahoma City 89ers | Amer | AAA | TEX | - | 26 | 3 | 3 | 1.11 | 18 | 0 | 0 | 0 | 18 | 11 | 4 | 40.2 | 28 | 7 | 5 | 2 | 10 | 40 | 1 | 0 | 1 | 0.93 | 6.20 | 0.44 | 2.21 | 8.85 | 1.55 | 4.00 |
| 1989 | Texas Rangers | AL | MLB | TEX | 50 | 26 | 1 | 0 | 3.26 | 43 | 0 | 0 | 0 | 43 | 8 | 1 | 49.2 | 52 | 18 | 18 | 4 | 25 | 26 | 1 | 0 | 2 | 1.55 | 9.42 | 0.72 | 4.53 | 4.71 | 3.26 | 1.04 |
| 1990 | Oklahoma City 89ers | Amer | AAA | TEX | - | 27 | 0 | 0 | 1.59 | 5 | 0 | 0 | 0 | 5 | 1 | 0 | 5.2 | 5 | 2 | 1 | 0 | 4 | 7 | 0 | 0 | 0 | 1.59 | 7.94 | 0.00 | 6.35 | 11.12 | 3.18 | 1.75 |
| 1990 | Texas Rangers | AL | MLB | TEX | 50 | 27 | 0 | 3 | 3.73 | 33 | 0 | 0 | 0 | 33 | 8 | 0 | 41.0 | 42 | 17 | 17 | 4 | 15 | 13 | 1 | 0 | 2 | 1.39 | 9.22 | 0.88 | 3.29 | 2.85 | 3.73 | 0.87 |
| 1991 | Huntsville Stars | Sou | AA | OAK | - | 28 | 0 | 0 | 1.93 | 4 | 0 | 0 | 0 | 4 | 0 | 0 | 4.2 | 4 | 2 | 1 | 0 | 3 | 4 | 0 | 0 | 0 | 1.50 | 7.71 | 0.00 | 5.79 | 7.71 | 3.86 | 1.33 |
| 1991 | Oklahoma City 89ers | Amer | AAA | TEX | - | 28 | 2 | 1 | 9.74 | 10 | 0 | 0 | 0 | 10 | 7 | 0 | 20.1 | 34 | 23 | 22 | 3 | 6 | 14 | 2 | 0 | 2 | 1.97 | 15.05 | 1.33 | 2.66 | 6.20 | 10.18 | 2.33 |
| 1991 | Tacoma Tigers | PCL | AAA | OAK | - | 28 | 1 | 0 | 5.93 | 10 | 0 | 0 | 0 | 10 | 3 | 0 | 13.2 | 14 | 9 | 9 | 1 | 9 | 6 | 0 | 0 | 1 | 1.68 | 9.22 | 0.66 | 5.93 | 3.95 | 5.93 | 0.67 |
| Tot: | MLB (3 yrs) | MLB | 1 | 3 | 3.56 | 79 | 0 | 0 | 0 | 17 | 79 | 1 | 93.2 | 97 | 37 | 37 | 10 | 41 | 42 | 2 | 0 | 4 | 1.47 | 9.32 | 0.96 | 3.94 | 4.04 | 3.56 | 1.02 | ||||
| Tot: | AL (3 yrs) | AL | 1 | 3 | 3.56 | 79 | 0 | 0 | 0 | 17 | 79 | 1 | 93.2 | 97 | 37 | 37 | 10 | 41 | 42 | 2 | 0 | 4 | 1.47 | 9.32 | 0.96 | 3.94 | 4.04 | 3.56 | 1.02 | ||||
| Tot: | Minors (7 yrs) | Minors | 25 | 22 | 3.31 | 221 | 1 | 0 | 0 | 152 | 220 | 54 | 364.2 | 319 | 157 | 134 | 20 | 146 | 339 | 17 | 0 | 16 | 1.28 | 7.87 | 0.49 | 3.60 | 8.37 | 3.87 | 2.32 | ||||
| Tot: | Rk (1 yrs) | Rk | 2 | 2 | 0.96 | 19 | 0 | 0 | 0 | 14 | 19 | 6 | 37.2 | 25 | 8 | 4 | 0 | 14 | 49 | 2 | 0 | 0 | 1.04 | 5.97 | 0.00 | 3.35 | 11.71 | 1.91 | 3.50 | ||||
| Tot: | A+ (1 yrs) | A+ | 4 | 4 | 3.93 | 37 | 0 | 0 | 0 | 30 | 37 | 11 | 52.2 | 48 | 25 | 23 | 4 | 20 | 49 | 3 | 0 | 3 | 1.29 | 8.20 | 0.68 | 3.42 | 8.37 | 4.27 | 2.45 | ||||
| Tot: | AA (3 yrs) | AA | 5 | 3 | 3.15 | 56 | 1 | 0 | 0 | 37 | 55 | 17 | 97.0 | 79 | 42 | 34 | 7 | 45 | 98 | 5 | 0 | 3 | 1.28 | 7.33 | 0.65 | 4.18 | 9.09 | 3.90 | 2.18 | ||||
| Tot: | AAA (5 yrs) | AAA | 14 | 13 | 3.70 | 109 | 0 | 0 | 0 | 71 | 109 | 20 | 177.1 | 167 | 82 | 73 | 9 | 67 | 143 | 7 | 0 | 10 | 1.32 | 8.48 | 0.46 | 3.40 | 7.26 | 4.16 | 2.13 | ||||
| Avg: | MLB - 162 Inning avg | MLB | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | ||||
| Avg: | Minors - 162 Inning avg | College | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 58 | 56 | 61 | 58 | 61 | 59 | .442 |