| 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 |
| 1969 | Chicago Cubs | NL | MLB | CHN | 36 | 22 | 1 | 0 | 2.92 | 4 | 1 | 0 | 0 | 3 | 1 | 0 | 12.1 | 10 | 4 | 4 | 0 | 6 | 13 | 1 | 0 | 0 | 1.30 | 7.30 | 0.00 | 4.38 | 9.49 | 2.92 | 2.17 |
| 1970 | Chicago Cubs | NL | MLB | CHN | 36 | 23 | 2 | 7 | 4.64 | 24 | 17 | 1 | 0 | 7 | 3 | 0 | 108.2 | 108 | 64 | 56 | 12 | 56 | 79 | 5 | 0 | 4 | 1.51 | 8.94 | 0.99 | 4.64 | 6.54 | 5.30 | 1.41 |
| 1971 | Chicago Cubs | NL | MLB | CHN | 37 | 24 | 3 | 2 | 4.73 | 21 | 4 | 0 | 0 | 17 | 4 | 0 | 45.2 | 62 | 24 | 24 | 2 | 25 | 37 | 1 | 0 | 0 | 1.91 | 12.22 | 0.39 | 4.93 | 7.29 | 4.73 | 1.48 |
| 1972 | Chicago Cubs | NL | MLB | CHN | 37 | 25 | 1 | 0 | 2.13 | 5 | 1 | 0 | 0 | 4 | 1 | 0 | 12.2 | 9 | 3 | 3 | 1 | 4 | 7 | 0 | 0 | 0 | 1.03 | 6.39 | 0.71 | 2.84 | 4.97 | 2.13 | 1.75 |
| 1973 | Minnesota Twins | AL | MLB | MIN | 21 | 26 | 10 | 10 | 4.17 | 29 | 24 | 6 | 3 | 5 | 3 | 0 | 170.1 | 167 | 87 | 79 | 12 | 88 | 109 | 8 | 0 | 4 | 1.50 | 8.82 | 0.63 | 4.65 | 5.76 | 4.60 | 1.24 |
| 1974 | Minnesota Twins | AL | MLB | MIN | 21 | 27 | 16 | 14 | 3.29 | 37 | 37 | 11 | 1 | 0 | 0 | 0 | 248.2 | 234 | 105 | 91 | 24 | 97 | 158 | 9 | 0 | 2 | 1.33 | 8.47 | 0.87 | 3.51 | 5.72 | 3.80 | 1.63 |
| 1975 | Minnesota Twins | AL | MLB | MIN | 21 | 28 | 1 | 3 | 8.54 | 10 | 7 | 1 | 0 | 3 | 2 | 0 | 26.1 | 25 | 25 | 25 | 2 | 36 | 8 | 5 | 0 | 0 | 2.32 | 8.54 | 0.68 | 12.30 | 2.73 | 8.54 | 0.22 |
| 1976 | Evansville Triplets | Amer | AAA | DET | - | 29 | 1 | 10 | 6.95 | 12 | 12 | 0 | 0 | 0 | 0 | 0 | 57.0 | 62 | 57 | 44 | 7 | 43 | 35 | 11 | 0 | 2 | 1.84 | 9.79 | 1.11 | 6.79 | 5.53 | 9.00 | 0.81 |
| 1976 | Minnesota Twins | AL | MLB | MIN | 21 | 29 | 2 | 7 | 5.28 | 13 | 12 | 0 | 0 | 1 | 1 | 0 | 58.0 | 60 | 37 | 34 | 3 | 51 | 35 | 6 | 1 | 1 | 1.91 | 9.31 | 0.47 | 7.91 | 5.43 | 5.74 | 0.69 |
| 1977 | Wichita Aeros | Amer | AAA | CHN | - | 30 | 5 | 7 | 4.70 | 14 | 14 | 3 | 0 | 0 | 0 | 0 | 90.0 | 94 | 52 | 47 | 5 | 28 | 54 | 3 | 0 | 0 | 1.36 | 9.40 | 0.50 | 2.80 | 5.40 | 5.20 | 1.93 |
| 1978 | San Jose Missions | PCL | AAA | SEA | - | 31 | 6 | 13 | 3.93 | 43 | 17 | 6 | 1 | 26 | 0 | 5 | 151.0 | 160 | 82 | 66 | 3 | 76 | 85 | 9 | 0 | 3 | 1.56 | 9.54 | 0.18 | 4.53 | 5.07 | 4.89 | 1.12 |
| 1979 | Spokane Indians | PCL | AAA | SEA | - | 32 | 3 | 2 | 3.06 | 29 | 4 | 0 | 0 | 25 | 0 | 5 | 53.0 | 51 | 21 | 18 | 0 | 34 | 29 | 4 | 0 | 0 | 1.60 | 8.66 | 0.00 | 5.77 | 4.92 | 3.57 | 0.85 |
| 1979 | Seattle Mariners | AL | MLB | SEA | 35 | 32 | 0 | 1 | 4.28 | 9 | 2 | 0 | 0 | 7 | 6 | 0 | 27.1 | 27 | 14 | 13 | 2 | 14 | 12 | 2 | 0 | 0 | 1.50 | 8.89 | 0.66 | 4.61 | 3.95 | 4.61 | 0.86 |
| 1982 | Salt Lake Gulls | PCL | AAA | SEA | - | 35 | 2 | 0 | 6.57 | 8 | 0 | 0 | 0 | 8 | 2 | 0 | 12.1 | 16 | 9 | 9 | 4 | 9 | 8 | 1 | 0 | 0 | 2.03 | 11.68 | 2.92 | 6.57 | 5.84 | 6.57 | 0.89 |
| 1983 | Salt Lake Gulls | PCL | AAA | SEA | - | 36 | 1 | 2 | 8.05 | 13 | 1 | 0 | 0 | 12 | 4 | 0 | 34.2 | 42 | 34 | 31 | 7 | 22 | 26 | 3 | 0 | 1 | 1.85 | 10.90 | 1.82 | 5.71 | 6.75 | 8.83 | 1.18 |
| Tot: | MLB (9 yrs) | MLB | 36 | 44 | 4.17 | 152 | 105 | 19 | 4 | 21 | 47 | 0 | 710.0 | 702 | 363 | 329 | 58 | 377 | 458 | 37 | 1 | 11 | 1.52 | 8.90 | 0.74 | 4.78 | 5.81 | 4.60 | 1.21 | ||||
| Tot: | NL (4 yrs) | NL | 7 | 9 | 4.37 | 54 | 23 | 1 | 0 | 9 | 31 | 0 | 179.1 | 189 | 95 | 87 | 15 | 91 | 136 | 7 | 0 | 4 | 1.56 | 9.49 | 0.75 | 4.57 | 6.83 | 4.77 | 1.49 | ||||
| Tot: | AL (5 yrs) | AL | 29 | 35 | 4.10 | 98 | 82 | 18 | 4 | 12 | 16 | 0 | 530.2 | 513 | 268 | 242 | 43 | 286 | 322 | 30 | 1 | 7 | 1.51 | 8.70 | 0.73 | 4.85 | 5.46 | 4.55 | 1.13 | ||||
| Tot: | Minors (6 yrs) | Minors | 18 | 34 | 4.86 | 119 | 48 | 9 | 1 | 6 | 71 | 10 | 398.0 | 425 | 255 | 215 | 26 | 212 | 237 | 31 | 0 | 6 | 1.60 | 9.61 | 0.59 | 4.79 | 5.36 | 5.77 | 1.12 | ||||
| Tot: | AAA (6 yrs) | AAA | 18 | 34 | 4.86 | 119 | 48 | 9 | 1 | 6 | 71 | 10 | 398.0 | 425 | 255 | 215 | 26 | 212 | 237 | 31 | 0 | 6 | 1.60 | 9.61 | 0.59 | 4.79 | 5.36 | 5.77 | 1.12 | ||||
| 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 |
| 1969 | Chicago Cubs | NL | MLB | CHN | 36 | 22 | P | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 50.00 | 0.00 | 0.00 | |
| 1970 | Chicago Cubs | NL | MLB | CHN | 36 | 23 | P | 24 | 34 | 3 | 6 | 1 | 0 | 1 | 3 | 0 | 0 | 2 | 16 | 0 | 2 | 0 | 0 | 0 | 10 | 38 | 2 | 4 | .176 | .222 | .294 | .516 | .176 | .118 | .294 | 5.26 | 42.11 | 8.00 | 34.00 | |
| 1971 | Chicago Cubs | NL | MLB | CHN | 37 | 24 | P | 22 | 8 | 1 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 0 | 1 | 0 | 0 | 0 | 3 | 10 | 1 | 1 | .250 | .333 | .375 | .708 | .250 | .125 | .667 | 10.00 | 50.00 | 5.00 | 0.00 | |
| 1972 | Chicago Cubs | NL | MLB | CHN | 37 | 25 | P | 5 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 0.00 | 0.00 | 0.00 | |
| 1976 | Evansville Triplets | Amer | AAA | DET | - | 29 | P | 12 | 21 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 0 | 1 | 0 | 0 | 0 | 0 | 22 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 40.91 | 0.00 | 0.00 | |
| 1977 | Wichita Aeros | Amer | AAA | CHN | - | 30 | P | 14 | 31 | 5 | 6 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 0 | 5 | 0 | 0 | 0 | 7 | 36 | 1 | 5 | .194 | .194 | .226 | .420 | .032 | .032 | .316 | 0.00 | 33.33 | 0.00 | 0.00 | |
| Tot: | MLB (4 yrs) | MLB | 55 | 46 | 5 | 8 | 2 | 0 | 1 | 3 | 0 | 0 | 3 | 22 | 0 | 6 | 0 | 0 | 0 | 13 | 55 | 3 | 5 | .174 | .224 | .283 | .507 | .174 | .109 | .304 | 5.45 | 40.00 | 7.33 | 46.00 | ||||||
| Tot: | NL (4 yrs) | NL | 55 | 46 | 5 | 8 | 2 | 0 | 1 | 3 | 0 | 0 | 3 | 22 | 0 | 6 | 0 | 0 | 0 | 13 | 55 | 3 | 5 | .174 | .224 | .283 | .507 | .174 | .109 | .304 | 5.45 | 40.00 | 7.33 | 46.00 | ||||||
| Tot: | Minors (2 yrs) | Minors | 26 | 52 | 5 | 6 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 21 | 0 | 6 | 0 | 0 | 0 | 7 | 58 | 1 | 5 | .115 | .115 | .135 | .250 | .019 | .019 | .194 | 0.00 | 36.21 | ||||||||
| Tot: | AAA (2 yrs) | AAA | 26 | 52 | 5 | 6 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 21 | 0 | 6 | 0 | 0 | 0 | 7 | 58 | 1 | 5 | .115 | .115 | .135 | .250 | .019 | .019 | .194 | 0.00 | 36.21 | ||||||||
| Avg: | MLB - 162 game avg | MLB | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | ||||||
| Avg: | Minors - 162 game avg | College | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 52 | 26 | 44 | 32 | 44 | 44 | .482 |