| 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 |
| 1991 | Texas Tech | SWC | NCAA-1 | Jr | 20 | 12 | 4 | 3.12 | 20 | 18 | 12 | 4 | 2 | 0 | 2 | 147.1 | 143 | 63 | 51 | 0 | 20 | 87 | 0 | 0 | 0 | 1.11 | 8.74 | 0.00 | 1.22 | 5.31 | 3.85 | 4.35 | |
| 1992 | Texas Tech | SWC | NCAA-1 | Sr | 21 | 10 | 7 | 2.92 | 18 | 18 | 12 | 1 | 0 | 0 | 0 | 145.0 | 145 | 59 | 47 | 0 | 22 | 107 | 0 | 0 | 0 | 1.15 | 9.00 | 0.00 | 1.37 | 6.64 | 3.66 | 4.86 | |
| 1992 | Butte Copper Kings | Pio | Rk | TEX | - | 21 | 7 | 1 | 4.06 | 24 | 1 | 0 | 0 | 23 | 16 | 2 | 62.0 | 70 | 32 | 28 | 3 | 14 | 78 | 1 | 0 | 0 | 1.35 | 10.16 | 0.44 | 2.03 | 11.32 | 4.65 | 5.57 |
| 1993 | Charleston (sc) Rainbows | SAL | A | TEX | - | 22 | 6 | 3 | 1.46 | 44 | 0 | 0 | 0 | 44 | 18 | 4 | 80.0 | 62 | 23 | 13 | 2 | 22 | 67 | 0 | 0 | 3 | 1.05 | 6.98 | 0.23 | 2.48 | 7.54 | 2.59 | 3.05 |
| 1994 | Charlotte Rangers | FSL | A+ | TEX | - | 23 | 0 | 2 | 0.87 | 25 | 0 | 0 | 0 | 25 | 15 | 5 | 41.1 | 23 | 5 | 4 | 1 | 15 | 44 | 0 | 0 | 2 | 0.92 | 5.01 | 0.22 | 3.27 | 9.58 | 1.09 | 2.93 |
| 1994 | Tulsa Drillers | Tex | AA | TEX | - | 23 | 5 | 4 | 1.74 | 37 | 0 | 0 | 0 | 37 | 26 | 8 | 62.0 | 50 | 17 | 12 | 2 | 12 | 63 | 0 | 0 | 1 | 1.00 | 7.26 | 0.29 | 1.74 | 9.15 | 2.47 | 5.25 |
| 1995 | Oklahoma City 89ers | Amer | AAA | TEX | - | 24 | 0 | 5 | 2.02 | 35 | 0 | 0 | 0 | 35 | 15 | 2 | 58.0 | 52 | 16 | 13 | 2 | 15 | 51 | 0 | 2 | 2 | 1.16 | 8.07 | 0.31 | 2.33 | 7.91 | 2.48 | 3.40 |
| 1995 | Texas Rangers | AL | MLB | TEX | 51 | 24 | 0 | 1 | 5.93 | 11 | 0 | 0 | 0 | 11 | 5 | 0 | 27.1 | 36 | 18 | 18 | 5 | 7 | 21 | 0 | 1 | 1 | 1.57 | 11.85 | 1.65 | 2.30 | 6.91 | 5.93 | 3.00 |
| 1996 | Texas Rangers | AL | MLB | TEX | 51 | 25 | 1 | 3 | 3.21 | 26 | 0 | 0 | 0 | 26 | 8 | 0 | 47.2 | 48 | 22 | 17 | 3 | 25 | 37 | 0 | 1 | 2 | 1.53 | 9.06 | 0.57 | 4.72 | 6.99 | 4.15 | 1.48 |
| 1996 | Boston Red Sox | AL | MLB | BOS | 50 | 25 | 4 | 2 | 3.81 | 29 | 0 | 0 | 0 | 29 | 5 | 0 | 28.1 | 28 | 13 | 12 | 5 | 8 | 29 | 0 | 0 | 1 | 1.27 | 8.89 | 1.59 | 2.54 | 9.21 | 4.13 | 3.63 |
| 1997 | Sarasota Red Sox | FSL | A+ | BOS | - | 26 | 0 | 0 | 0.00 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 3.0 | 3 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1.00 | 9.00 | 0.00 | 0.00 | 3.00 | 0.00 | 0.00 |
| 1997 | Pawtucket Red Sox | IL | AAA | BOS | - | 26 | 2 | 1 | 2.41 | 9 | 0 | 0 | 0 | 9 | 4 | 0 | 18.2 | 13 | 6 | 5 | 2 | 3 | 23 | 0 | 0 | 1 | 0.86 | 6.27 | 0.96 | 1.45 | 11.09 | 2.89 | 7.67 |
| 1997 | Boston Red Sox | AL | MLB | BOS | 50 | 26 | 0 | 2 | 5.49 | 31 | 0 | 0 | 0 | 31 | 5 | 0 | 41.0 | 49 | 25 | 25 | 3 | 16 | 34 | 0 | 0 | 2 | 1.59 | 10.76 | 0.66 | 3.51 | 7.46 | 5.49 | 2.13 |
| Tot: | MLB (3 yrs) | MLB | 5 | 8 | 4.49 | 97 | 0 | 0 | 0 | 23 | 97 | 0 | 144.1 | 161 | 78 | 72 | 16 | 56 | 121 | 0 | 2 | 6 | 1.50 | 10.04 | 1.00 | 3.49 | 7.55 | 4.86 | 2.16 | ||||
| Tot: | AL (3 yrs) | AL | 5 | 8 | 4.49 | 97 | 0 | 0 | 0 | 23 | 97 | 0 | 144.1 | 161 | 78 | 72 | 16 | 56 | 121 | 0 | 2 | 6 | 1.50 | 10.04 | 1.00 | 3.49 | 7.55 | 4.86 | 2.16 | ||||
| Tot: | Minors (5 yrs) | Minors | 20 | 16 | 2.08 | 175 | 1 | 0 | 0 | 95 | 174 | 21 | 325.0 | 273 | 99 | 75 | 12 | 81 | 327 | 1 | 2 | 9 | 1.09 | 7.56 | 0.33 | 2.24 | 9.06 | 2.74 | 4.04 | ||||
| Tot: | Rk (1 yrs) | Rk | 7 | 1 | 4.06 | 24 | 1 | 0 | 0 | 16 | 23 | 2 | 62.0 | 70 | 32 | 28 | 3 | 14 | 78 | 1 | 0 | 0 | 1.35 | 10.16 | 0.44 | 2.03 | 11.32 | 4.65 | 5.57 | ||||
| Tot: | A (1 yrs) | A | 6 | 3 | 1.46 | 44 | 0 | 0 | 0 | 18 | 44 | 4 | 80.0 | 62 | 23 | 13 | 2 | 22 | 67 | 0 | 0 | 3 | 1.05 | 6.98 | 0.22 | 2.48 | 7.54 | 2.59 | 3.05 | ||||
| Tot: | A+ (2 yrs) | A+ | 0 | 2 | 0.81 | 26 | 0 | 0 | 0 | 16 | 26 | 5 | 44.1 | 26 | 5 | 4 | 1 | 15 | 45 | 0 | 0 | 2 | 0.92 | 5.28 | 0.20 | 3.05 | 9.14 | 1.02 | 3.00 | ||||
| Tot: | AA (1 yrs) | AA | 5 | 4 | 1.74 | 37 | 0 | 0 | 0 | 26 | 37 | 8 | 62.0 | 50 | 17 | 12 | 2 | 12 | 63 | 0 | 0 | 1 | 1.00 | 7.26 | 0.29 | 1.74 | 9.15 | 2.47 | 5.25 | ||||
| Tot: | AAA (2 yrs) | AAA | 2 | 6 | 2.11 | 44 | 0 | 0 | 0 | 19 | 44 | 2 | 76.2 | 65 | 22 | 18 | 4 | 18 | 74 | 0 | 2 | 3 | 1.08 | 7.63 | 0.47 | 2.11 | 8.69 | 2.58 | 4.11 | ||||
| Tot: | College (2 yrs) | College | 22 | 11 | 3.02 | 38 | 36 | 24 | 5 | 0 | 2 | 2 | 292.1 | 288 | 122 | 98 | 0 | 42 | 194 | 0 | 0 | 0 | 1.13 | 8.87 | 0.00 | 1.29 | 5.97 | 3.76 | 4.62 | ||||
| Avg: | MLB - 162 Inning avg | MLB | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | ||||
| Avg: | Minors - 162 Inning avg | College | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | ||||
| Avg: | College - 162 Inning avg | College | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 67 | 82 | 55 | 88 | 55 | 74 | .488 |