| 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 |
| 1973 | Oakland Athletics | AL | MLB | OAK | 36 | 22 | 1 | 0 | 3.86 | 5 | 3 | 1 | 0 | 2 | 1 | 0 | 18.2 | 16 | 8 | 8 | 3 | 7 | 6 | 0 | 1 | 0 | 1.23 | 7.71 | 1.45 | 3.37 | 2.89 | 3.86 | 0.86 |
| 1974 | Oakland Athletics | AL | MLB | OAK | 37 | 23 | 5 | 7 | 3.00 | 19 | 17 | 3 | 0 | 2 | 0 | 0 | 96.0 | 89 | 38 | 32 | 4 | 34 | 38 | 3 | 0 | 3 | 1.28 | 8.34 | 0.38 | 3.19 | 3.56 | 3.56 | 1.12 |
| 1975 | Oakland Athletics | AL | MLB | OAK | 37 | 24 | 5 | 5 | 4.25 | 30 | 15 | 3 | 1 | 15 | 4 | 0 | 114.1 | 109 | 61 | 54 | 12 | 50 | 51 | 2 | 1 | 2 | 1.39 | 8.58 | 0.94 | 3.94 | 4.01 | 4.80 | 1.02 |
| 1976 | Oakland Athletics | AL | MLB | OAK | 37 | 25 | 2 | 4 | 5.49 | 19 | 10 | 0 | 0 | 9 | 4 | 0 | 62.1 | 87 | 41 | 38 | 6 | 16 | 27 | 3 | 0 | 1 | 1.65 | 12.56 | 0.87 | 2.31 | 3.90 | 5.92 | 1.69 |
| 1977 | Seattle Mariners | AL | MLB | SEA | 17 | 26 | 12 | 13 | 4.45 | 36 | 34 | 7 | 0 | 2 | 0 | 0 | 204.1 | 212 | 111 | 101 | 32 | 56 | 100 | 3 | 0 | 12 | 1.31 | 9.34 | 1.41 | 2.47 | 4.40 | 4.89 | 1.79 |
| 1978 | Seattle Mariners | AL | MLB | SEA | 17 | 27 | 7 | 15 | 5.27 | 29 | 28 | 8 | 1 | 1 | 0 | 0 | 155.1 | 191 | 99 | 91 | 22 | 44 | 67 | 1 | 0 | 2 | 1.51 | 11.07 | 1.27 | 2.55 | 3.88 | 5.74 | 1.52 |
| 1979 | Seattle Mariners | AL | MLB | SEA | 17 | 28 | 4 | 10 | 5.17 | 23 | 19 | 3 | 0 | 4 | 1 | 0 | 116.2 | 138 | 78 | 67 | 19 | 38 | 25 | 1 | 0 | 3 | 1.51 | 10.65 | 1.47 | 2.93 | 1.93 | 6.02 | 0.66 |
| 1980 | Seattle Mariners | AL | MLB | SEA | 17 | 29 | 12 | 12 | 4.10 | 31 | 31 | 7 | 2 | 0 | 0 | 0 | 215.0 | 228 | 110 | 98 | 27 | 49 | 78 | 1 | 1 | 3 | 1.29 | 9.54 | 1.13 | 2.05 | 3.27 | 4.60 | 1.59 |
| 1981 | Seattle Mariners | AL | MLB | SEA | 17 | 30 | 4 | 9 | 3.94 | 22 | 20 | 1 | 0 | 2 | 1 | 0 | 130.1 | 127 | 64 | 57 | 14 | 28 | 35 | 1 | 0 | 0 | 1.19 | 8.77 | 0.97 | 1.93 | 2.42 | 4.42 | 1.25 |
| 1982 | Salt Lake Gulls | PCL | AAA | SEA | - | 31 | 1 | 1 | 8.10 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 10.0 | 15 | 10 | 9 | 2 | 3 | 3 | 0 | 0 | 0 | 1.80 | 13.50 | 1.80 | 2.70 | 2.70 | 9.00 | 1.00 |
| 1983 | Salt Lake Gulls | PCL | AAA | SEA | - | 32 | 0 | 2 | 6.08 | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 23.2 | 33 | 21 | 16 | 3 | 6 | 12 | 1 | 0 | 2 | 1.65 | 12.55 | 1.14 | 2.28 | 4.56 | 7.99 | 2.00 |
| 1983 | Seattle Mariners | AL | MLB | SEA | 17 | 32 | 5 | 3 | 4.59 | 14 | 14 | 2 | 0 | 0 | 0 | 0 | 82.1 | 103 | 46 | 42 | 9 | 15 | 38 | 0 | 2 | 4 | 1.43 | 11.26 | 0.98 | 1.64 | 4.15 | 5.03 | 2.53 |
| 1983 | Detroit Tigers | AL | MLB | DET | 24 | 32 | 2 | 1 | 1.93 | 7 | 7 | 1 | 1 | 0 | 0 | 0 | 46.2 | 43 | 12 | 10 | 5 | 7 | 11 | 2 | 0 | 0 | 1.07 | 8.29 | 0.96 | 1.35 | 2.12 | 2.31 | 1.57 |
| 1984 | Evansville Triplets | Amer | AAA | DET | - | 33 | 0 | 4 | 3.94 | 5 | 5 | 0 | 0 | 0 | 0 | 0 | 29.2 | 30 | 14 | 13 | 2 | 8 | 8 | 0 | 0 | 0 | 1.28 | 9.10 | 0.61 | 2.43 | 2.43 | 4.25 | 1.00 |
| 1984 | Detroit Tigers | AL | MLB | DET | 24 | 33 | 3 | 4 | 5.93 | 13 | 8 | 1 | 0 | 5 | 2 | 0 | 44.0 | 62 | 39 | 29 | 9 | 8 | 8 | 1 | 0 | 2 | 1.59 | 12.68 | 1.84 | 1.64 | 1.64 | 7.98 | 1.00 |
| Tot: | MLB (11 yrs) | MLB | 62 | 83 | 4.39 | 248 | 206 | 37 | 5 | 13 | 42 | 0 | 1286.0 | 1405 | 707 | 627 | 162 | 352 | 484 | 18 | 5 | 32 | 1.37 | 9.83 | 1.13 | 2.46 | 3.39 | 4.95 | 1.38 | ||||
| Tot: | AL (11 yrs) | AL | 62 | 83 | 4.39 | 248 | 206 | 37 | 5 | 13 | 42 | 0 | 1286.0 | 1405 | 707 | 627 | 162 | 352 | 484 | 18 | 5 | 32 | 1.37 | 9.83 | 1.13 | 2.46 | 3.39 | 4.95 | 1.38 | ||||
| Tot: | Minors (3 yrs) | Minors | 1 | 7 | 5.40 | 11 | 11 | 0 | 0 | 0 | 0 | 0 | 63.1 | 78 | 45 | 38 | 7 | 17 | 23 | 1 | 0 | 2 | 1.50 | 11.08 | 0.99 | 2.42 | 3.27 | 6.39 | 1.35 | ||||
| Tot: | AAA (3 yrs) | AAA | 1 | 7 | 5.40 | 11 | 11 | 0 | 0 | 0 | 0 | 0 | 63.1 | 78 | 45 | 38 | 7 | 17 | 23 | 1 | 0 | 2 | 1.50 | 11.08 | 0.99 | 2.42 | 3.27 | 6.39 | 1.35 | ||||
| Avg: | MLB - 162 Inning avg | MLB | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | ||||
| Avg: | Minors - 162 Inning avg | College | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| year | team name | league | category | 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 | Oakland Athletics | Championship Series | Playoffs | 24 | 0 | 0 | 0.00 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Tot: | Playoffs (1 Yrs) | Playoffs | 0 | 0 | 0.00 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 15 | 79 | 34 | 42 | 34 | 52 | .490 |