| 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 |
| 1968 | Western Illinois | Ill-Conf | NCAA-1 | 21 | 9 | 3 | 1.50 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 96.0 | 62 | 25 | 16 | 0 | 29 | 100 | 0 | 0 | 0 | 0.95 | 5.81 | 0.00 | 2.72 | 9.38 | 2.34 | 3.45 | ||
| 1975 | Chicago Cubs | NL | MLB | CHN | 43 | 28 | 1 | 3 | 3.50 | 28 | 0 | 0 | 0 | 28 | 18 | 5 | 36.0 | 44 | 15 | 14 | 1 | 13 | 12 | 1 | 0 | 1 | 1.58 | 11.00 | 0.25 | 3.25 | 3.00 | 3.75 | 0.92 |
| 1976 | Chicago Cubs | NL | MLB | CHN | 43 | 29 | 4 | 2 | 4.55 | 50 | 2 | 0 | 0 | 48 | 11 | 3 | 87.0 | 94 | 46 | 44 | 12 | 33 | 55 | 3 | 2 | 1 | 1.46 | 9.72 | 1.24 | 3.41 | 5.69 | 4.76 | 1.67 |
| 1977 | Chicago Cubs | NL | MLB | CHN | 43 | 30 | 5 | 6 | 4.37 | 69 | 0 | 0 | 0 | 69 | 26 | 4 | 107.0 | 105 | 58 | 52 | 9 | 40 | 62 | 5 | 2 | 0 | 1.36 | 8.83 | 0.76 | 3.36 | 5.21 | 4.88 | 1.55 |
| 1978 | Chicago Cubs | NL | MLB | CHN | 43 | 31 | 2 | 0 | 5.14 | 16 | 0 | 0 | 0 | 16 | 6 | 0 | 28.0 | 29 | 16 | 16 | 4 | 13 | 13 | 1 | 0 | 1 | 1.50 | 9.32 | 1.29 | 4.18 | 4.18 | 5.14 | 1.00 |
| 1978 | Cleveland Indians | AL | MLB | CLE | 41 | 31 | 2 | 4 | 3.11 | 18 | 6 | 1 | 0 | 12 | 6 | 0 | 89.2 | 95 | 33 | 31 | 5 | 22 | 24 | 1 | 1 | 2 | 1.30 | 9.54 | 0.50 | 2.21 | 2.41 | 3.31 | 1.09 |
| 1979 | Cleveland Indians | AL | MLB | CLE | 41 | 32 | 2 | 1 | 7.94 | 17 | 1 | 0 | 0 | 16 | 5 | 1 | 45.1 | 73 | 43 | 40 | 7 | 11 | 22 | 0 | 0 | 0 | 1.85 | 14.49 | 1.39 | 2.18 | 4.37 | 8.54 | 2.00 |
| Tot: | MLB (5 yrs) | MLB | 16 | 16 | 4.51 | 198 | 9 | 1 | 0 | 72 | 189 | 13 | 393.0 | 440 | 211 | 197 | 38 | 132 | 188 | 11 | 5 | 5 | 1.46 | 10.08 | 0.87 | 3.02 | 4.31 | 4.83 | 1.42 | ||||
| Tot: | AL (2 yrs) | AL | 4 | 5 | 4.73 | 35 | 7 | 1 | 0 | 11 | 28 | 1 | 135.0 | 168 | 76 | 71 | 12 | 33 | 46 | 1 | 1 | 2 | 1.49 | 11.20 | 0.80 | 2.20 | 3.07 | 5.07 | 1.39 | ||||
| Tot: | NL (4 yrs) | NL | 12 | 11 | 4.40 | 163 | 2 | 0 | 0 | 61 | 161 | 12 | 258.0 | 272 | 135 | 126 | 26 | 99 | 142 | 10 | 4 | 3 | 1.44 | 9.49 | 0.91 | 3.45 | 4.95 | 4.71 | 1.43 | ||||
| Tot: | College (1 yrs) | College | 9 | 3 | 1.50 | 15 | 0 | 0 | 0 | 0 | 15 | 0 | 96.0 | 62 | 25 | 16 | 0 | 29 | 100 | 0 | 0 | 0 | 0.95 | 5.81 | 0.00 | 2.72 | 9.38 | 2.34 | 3.45 | ||||
| Avg: | MLB - 162 Inning avg | MLB | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | ||||
| Avg: | College - 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 |
| 1975 | Chicago Cubs | NL | MLB | CHN | 43 | 28 | P | 28 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | .000 | .200 | .000 | .200 | .250 | .000 | .000 | 20.00 | 40.00 | 2.00 | 0.00 | |
| 1976 | Chicago Cubs | NL | MLB | CHN | 43 | 29 | P | 50 | 13 | 0 | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 4 | 0 | 0 | 1 | 0 | 0 | 2 | 15 | 0 | 2 | .154 | .200 | .154 | .354 | .077 | .000 | .200 | 6.67 | 26.67 | 4.00 | 0.00 | |
| 1977 | Chicago Cubs | NL | MLB | CHN | 43 | 30 | P | 69 | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 12 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 25.00 | 0.00 | 0.00 | |
| 1978 | Chicago Cubs | NL | MLB | CHN | 43 | 31 | P | 16 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 25.00 | 0.00 | 0.00 | |
| Tot: | MLB (4 yrs) | MLB | 163 | 32 | 0 | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 2 | 10 | 0 | 1 | 1 | 0 | 0 | 2 | 36 | 0 | 2 | .063 | .114 | .063 | .177 | .063 | .000 | .087 | 5.56 | 27.78 | 5.00 | |||||||
| Tot: | NL (4 yrs) | NL | 163 | 32 | 0 | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 2 | 10 | 0 | 1 | 1 | 0 | 0 | 2 | 36 | 0 | 2 | .063 | .114 | .063 | .177 | .063 | .000 | .087 | 5.56 | 27.78 | 5.00 | |||||||
| Avg: | MLB - 162 game avg | MLB | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 40 | 64 | 29 | 55 | 29 | 56 | .479 |