| 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 |
| 1974 | Minnesota Twins | AL | MLB | MIN | 32 | 23 | 2 | 0 | 0.00 | 4 | 0 | 0 | 0 | 4 | 4 | 1 | 7.0 | 4 | 1 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0.57 | 5.14 | 0.00 | 0.00 | 5.14 | 1.29 | 0.00 |
| 1975 | Minnesota Twins | AL | MLB | MIN | 32 | 24 | 1 | 2 | 4.19 | 18 | 0 | 0 | 0 | 18 | 7 | 3 | 38.2 | 40 | 23 | 18 | 4 | 21 | 17 | 1 | 0 | 2 | 1.58 | 9.31 | 0.93 | 4.89 | 3.96 | 5.35 | 0.81 |
| 1976 | Tacoma Twins | PCL | AAA | MIN | - | 25 | 7 | 6 | 1.82 | 45 | 0 | 0 | 0 | 45 | 0 | 13 | 89.0 | 75 | 21 | 18 | 4 | 20 | 65 | 1 | 0 | 7 | 1.07 | 7.58 | 0.40 | 2.02 | 6.57 | 2.12 | 3.25 |
| 1976 | Minnesota Twins | AL | MLB | MIN | 21 | 25 | 3 | 1 | 2.61 | 18 | 1 | 0 | 0 | 17 | 5 | 0 | 48.1 | 44 | 14 | 14 | 2 | 8 | 37 | 2 | 0 | 0 | 1.08 | 8.19 | 0.37 | 1.49 | 6.89 | 2.61 | 4.63 |
| 1977 | Minnesota Twins | AL | MLB | MIN | 21 | 26 | 16 | 7 | 3.13 | 71 | 0 | 0 | 0 | 71 | 54 | 15 | 146.2 | 152 | 57 | 51 | 11 | 47 | 87 | 10 | 0 | 5 | 1.36 | 9.33 | 0.67 | 2.88 | 5.34 | 3.50 | 1.85 |
| 1978 | Minnesota Twins | AL | MLB | MIN | 21 | 27 | 1 | 4 | 5.51 | 18 | 0 | 0 | 0 | 18 | 14 | 3 | 32.2 | 42 | 22 | 20 | 2 | 17 | 21 | 2 | 1 | 2 | 1.81 | 11.57 | 0.55 | 4.68 | 5.79 | 6.06 | 1.24 |
| 1980 | Glens Falls White Sox | East | AA | CHA | - | 29 | 2 | 5 | 6.65 | 15 | 15 | 1 | 0 | 0 | 0 | 0 | 65.0 | 86 | 58 | 48 | 9 | 22 | 28 | 4 | 0 | 2 | 1.66 | 11.91 | 1.25 | 3.05 | 3.88 | 8.03 | 1.27 |
| Tot: | MLB (5 yrs) | MLB | 23 | 14 | 3.39 | 129 | 1 | 0 | 0 | 84 | 128 | 22 | 273.1 | 282 | 117 | 103 | 19 | 93 | 166 | 15 | 1 | 9 | 1.37 | 9.29 | 0.63 | 3.06 | 5.47 | 3.85 | 1.78 | ||||
| Tot: | AL (5 yrs) | AL | 23 | 14 | 3.39 | 129 | 1 | 0 | 0 | 84 | 128 | 22 | 273.1 | 282 | 117 | 103 | 19 | 93 | 166 | 15 | 1 | 9 | 1.37 | 9.29 | 0.63 | 3.06 | 5.47 | 3.85 | 1.78 | ||||
| Tot: | Minors (2 yrs) | Minors | 9 | 11 | 3.86 | 60 | 15 | 1 | 0 | 0 | 45 | 13 | 154.0 | 161 | 79 | 66 | 13 | 42 | 93 | 5 | 0 | 9 | 1.32 | 9.41 | 0.76 | 2.45 | 5.44 | 4.62 | 2.21 | ||||
| Tot: | AA (1 yrs) | AA | 2 | 5 | 6.65 | 15 | 15 | 1 | 0 | 0 | 0 | 0 | 65.0 | 86 | 58 | 48 | 9 | 22 | 28 | 4 | 0 | 2 | 1.66 | 11.91 | 1.25 | 3.05 | 3.88 | 8.03 | 1.27 | ||||
| Tot: | AAA (1 yrs) | AAA | 7 | 6 | 1.82 | 45 | 0 | 0 | 0 | 0 | 45 | 13 | 89.0 | 75 | 21 | 18 | 4 | 20 | 65 | 1 | 0 | 7 | 1.07 | 7.58 | 0.40 | 2.02 | 6.57 | 2.12 | 3.25 | ||||
| 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 | 62 | 42 | 62 | 42 | 48 | .502 |