| 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 |
| 1975 | Texas Rangers | AL | MLB | TEX | 34 | 23 | 1 | 2 | 3.71 | 7 | 3 | 0 | 0 | 4 | 3 | 0 | 26.2 | 28 | 17 | 11 | 1 | 9 | 13 | 0 | 1 | 1 | 1.39 | 9.45 | 0.34 | 3.04 | 4.39 | 5.74 | 1.44 |
| 1976 | Sacramento Solons | PCL | AAA | TEX | - | 24 | 4 | 3 | 4.56 | 12 | 12 | 3 | 0 | 0 | 0 | 0 | 77.0 | 101 | 51 | 39 | 11 | 31 | 43 | 5 | 0 | 2 | 1.71 | 11.81 | 1.29 | 3.62 | 5.03 | 5.96 | 1.39 |
| 1976 | Texas Rangers | AL | MLB | TEX | 25 | 24 | 3 | 2 | 4.25 | 23 | 0 | 0 | 0 | 23 | 7 | 0 | 55.0 | 66 | 31 | 26 | 3 | 26 | 21 | 2 | 1 | 2 | 1.67 | 10.80 | 0.49 | 4.25 | 3.44 | 5.07 | 0.81 |
| 1977 | Tucson Toros | PCL | AAA | TEX | - | 25 | 4 | 8 | 7.51 | 30 | 18 | 2 | 0 | 12 | 0 | 0 | 115.0 | 161 | 117 | 96 | 16 | 61 | 67 | 10 | 1 | 0 | 1.93 | 12.60 | 1.25 | 4.77 | 5.24 | 9.16 | 1.10 |
| 1977 | Texas Rangers | AL | MLB | TEX | 48 | 25 | 0 | 0 | 19.29 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 2.1 | 9 | 5 | 5 | 1 | 0 | 1 | 0 | 0 | 0 | 3.86 | 34.71 | 3.86 | 0.00 | 3.86 | 19.29 | 0.00 |
| 1978 | Tucson Toros | PCL | AAA | TEX | - | 26 | 5 | 8 | 5.35 | 18 | 16 | 3 | 1 | 2 | 0 | 0 | 101.0 | 116 | 75 | 60 | 8 | 40 | 50 | 3 | 0 | 3 | 1.54 | 10.34 | 0.71 | 3.56 | 4.46 | 6.68 | 1.25 |
| 1979 | Toledo Mud Hens | IL | AAA | MIN | - | 27 | 1 | 1 | 1.29 | 7 | 0 | 0 | 0 | 7 | 0 | 1 | 21.0 | 19 | 3 | 3 | 0 | 3 | 16 | 1 | 0 | 1 | 1.05 | 8.14 | 0.00 | 1.29 | 6.86 | 1.29 | 5.33 |
| 1979 | Minnesota Twins | AL | MLB | MIN | 27 | 27 | 4 | 2 | 4.39 | 31 | 0 | 0 | 0 | 31 | 13 | 0 | 65.2 | 61 | 39 | 32 | 6 | 29 | 33 | 2 | 0 | 0 | 1.37 | 8.36 | 0.82 | 3.97 | 4.52 | 5.35 | 1.14 |
| 1980 | Toledo Mud Hens | IL | AAA | MIN | - | 28 | 7 | 2 | 3.60 | 26 | 0 | 0 | 0 | 26 | 0 | 7 | 45.0 | 45 | 19 | 18 | 3 | 29 | 30 | 4 | 0 | 2 | 1.64 | 9.00 | 0.60 | 5.80 | 6.00 | 3.80 | 1.03 |
| 1980 | Minnesota Twins | AL | MLB | MIN | 27 | 28 | 0 | 0 | 4.30 | 10 | 0 | 0 | 0 | 10 | 9 | 0 | 23.0 | 26 | 12 | 11 | 1 | 11 | 9 | 0 | 0 | 0 | 1.61 | 10.17 | 0.39 | 4.30 | 3.52 | 4.70 | 0.82 |
| Tot: | MLB (5 yrs) | MLB | 8 | 6 | 4.43 | 73 | 3 | 0 | 0 | 32 | 70 | 0 | 172.2 | 190 | 104 | 85 | 12 | 75 | 77 | 4 | 2 | 3 | 1.53 | 9.90 | 0.63 | 3.91 | 4.01 | 5.42 | 1.03 | ||||
| Tot: | AL (5 yrs) | AL | 8 | 6 | 4.43 | 73 | 3 | 0 | 0 | 32 | 70 | 0 | 172.2 | 190 | 104 | 85 | 12 | 75 | 77 | 4 | 2 | 3 | 1.53 | 9.90 | 0.63 | 3.91 | 4.01 | 5.42 | 1.03 | ||||
| Tot: | Minors (5 yrs) | Minors | 21 | 22 | 5.42 | 93 | 46 | 8 | 1 | 0 | 47 | 8 | 359.0 | 442 | 265 | 216 | 38 | 164 | 206 | 23 | 1 | 8 | 1.69 | 11.08 | 0.95 | 4.11 | 5.16 | 6.64 | 1.26 | ||||
| Tot: | AAA (5 yrs) | AAA | 21 | 22 | 5.42 | 93 | 46 | 8 | 1 | 0 | 47 | 8 | 359.0 | 442 | 265 | 216 | 38 | 164 | 206 | 23 | 1 | 8 | 1.69 | 11.08 | 0.95 | 4.11 | 5.16 | 6.64 | 1.26 | ||||
| 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 |
| Tot: | Minors (1 yrs) | Minors | 31 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||||||
| Tot: | AAA (1 yrs) | AAA | 31 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||||||
| Avg: | Minors - 162 game avg | College | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 39 | 49 | 34 | 42 | 34 | 37 | .500 |