| 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 |
| 1972 | Chicago White Sox | AL | MLB | CHA | 47 | 24 | 1 | 0 | 3.00 | 4 | 0 | 0 | 0 | 4 | 0 | 0 | 3.0 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1.33 | 9.00 | 3.00 | 3.00 | 3.00 | 3.00 | 1.00 |
| 1973 | Chicago White Sox | AL | MLB | CHA | 47 | 25 | 0 | 0 | 1.96 | 10 | 0 | 0 | 0 | 10 | 6 | 0 | 18.1 | 18 | 6 | 4 | 1 | 7 | 15 | 0 | 0 | 1 | 1.36 | 8.84 | 0.49 | 3.44 | 7.36 | 2.95 | 2.14 |
| 1974 | Chicago Cubs | NL | MLB | CHN | 47 | 26 | 6 | 9 | 3.88 | 55 | 16 | 1 | 0 | 39 | 7 | 1 | 125.1 | 150 | 65 | 54 | 11 | 43 | 71 | 9 | 0 | 1 | 1.54 | 10.77 | 0.79 | 3.09 | 5.10 | 4.67 | 1.65 |
| 1975 | Chicago Cubs | NL | MLB | CHN | 47 | 27 | 2 | 5 | 5.43 | 41 | 0 | 0 | 0 | 41 | 10 | 1 | 53.0 | 61 | 37 | 32 | 6 | 26 | 39 | 0 | 0 | 2 | 1.64 | 10.36 | 1.02 | 4.42 | 6.62 | 6.28 | 1.50 |
| 1976 | Wichita Aeros | Amer | AAA | CHN | - | 28 | 2 | 3 | 4.50 | 10 | 8 | 0 | 0 | 2 | 0 | 1 | 52.0 | 57 | 30 | 26 | 6 | 12 | 25 | 2 | 0 | 0 | 1.33 | 9.87 | 1.04 | 2.08 | 4.33 | 5.19 | 2.08 |
| 1976 | Chicago Cubs | NL | MLB | CHN | 47 | 28 | 1 | 2 | 2.41 | 6 | 3 | 0 | 0 | 3 | 1 | 0 | 18.2 | 20 | 7 | 5 | 0 | 5 | 10 | 0 | 0 | 0 | 1.34 | 9.64 | 0.00 | 2.41 | 4.82 | 3.37 | 2.00 |
| 1977 | Wichita Aeros | Amer | AAA | CHN | - | 29 | 1 | 2 | 4.30 | 15 | 2 | 0 | 0 | 13 | 0 | 0 | 23.0 | 33 | 16 | 11 | 1 | 5 | 12 | 1 | 0 | 0 | 1.65 | 12.91 | 0.39 | 1.96 | 4.70 | 6.26 | 2.40 |
| 1978 | Knoxville Sox | Sou | AA | CHA | - | 30 | 8 | 5 | 3.11 | 46 | 8 | 3 | 0 | 38 | 0 | 11 | 136.0 | 145 | 55 | 47 | 8 | 66 | 80 | 6 | 0 | 1 | 1.55 | 9.60 | 0.53 | 4.37 | 5.29 | 3.64 | 1.21 |
| Tot: | MLB (5 yrs) | MLB | 10 | 16 | 3.96 | 116 | 19 | 1 | 0 | 24 | 97 | 2 | 218.1 | 252 | 116 | 96 | 19 | 82 | 136 | 10 | 0 | 4 | 1.53 | 10.39 | 0.78 | 3.38 | 5.61 | 4.78 | 1.66 | ||||
| Tot: | NL (3 yrs) | NL | 9 | 16 | 4.16 | 102 | 19 | 1 | 0 | 18 | 83 | 2 | 197.0 | 231 | 109 | 91 | 17 | 74 | 120 | 9 | 0 | 3 | 1.55 | 10.55 | 0.78 | 3.38 | 5.48 | 4.98 | 1.62 | ||||
| Tot: | AL (2 yrs) | AL | 1 | 0 | 2.11 | 14 | 0 | 0 | 0 | 6 | 14 | 0 | 21.1 | 21 | 7 | 5 | 2 | 8 | 16 | 1 | 0 | 1 | 1.36 | 8.86 | 0.84 | 3.38 | 6.75 | 2.95 | 2.00 | ||||
| Tot: | Minors (3 yrs) | Minors | 11 | 10 | 3.58 | 71 | 18 | 3 | 0 | 0 | 53 | 12 | 211.0 | 235 | 101 | 84 | 15 | 83 | 117 | 9 | 0 | 1 | 1.51 | 10.02 | 0.64 | 3.54 | 4.99 | 4.31 | 1.41 | ||||
| Tot: | AA (1 yrs) | AA | 8 | 5 | 3.11 | 46 | 8 | 3 | 0 | 0 | 38 | 11 | 136.0 | 145 | 55 | 47 | 8 | 66 | 80 | 6 | 0 | 1 | 1.55 | 9.60 | 0.53 | 4.37 | 5.29 | 3.64 | 1.21 | ||||
| Tot: | AAA (2 yrs) | AAA | 3 | 5 | 4.44 | 25 | 10 | 0 | 0 | 0 | 15 | 1 | 75.0 | 90 | 46 | 37 | 7 | 17 | 37 | 3 | 0 | 0 | 1.43 | 10.80 | 0.84 | 2.04 | 4.44 | 5.52 | 2.18 | ||||
| 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 |
| 1974 | Chicago Cubs | NL | MLB | CHN | 47 | 26 | P | 58 | 31 | 4 | 8 | 0 | 0 | 0 | 6 | 0 | 0 | 1 | 10 | 0 | 4 | 0 | 0 | 0 | 8 | 36 | 0 | 8 | .258 | .281 | .258 | .539 | .032 | .000 | .381 | 2.78 | 27.78 | 10.00 | 0.00 | |
| 1975 | Chicago Cubs | NL | MLB | CHN | 47 | 27 | P | 41 | 7 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 9 | 0 | 1 | .143 | .250 | .143 | .393 | .143 | .000 | .167 | 11.11 | 11.11 | 1.00 | 0.00 | |
| 1976 | Wichita Aeros | Amer | AAA | CHN | - | 28 | P | 11 | 19 | 0 | 4 | 1 | 0 | 0 | 1 | 0 | 0 | 2 | 4 | 0 | 3 | 0 | 0 | 0 | 5 | 24 | 1 | 3 | .211 | .286 | .263 | .549 | .158 | .052 | .267 | 8.33 | 16.67 | 2.00 | 0.00 | |
| 1976 | Chicago Cubs | NL | MLB | CHN | 47 | 28 | P | 6 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 0.00 | 0.00 | 0.00 | |
| 1977 | Wichita Aeros | Amer | AAA | CHN | - | 29 | P | 15 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 6 | 0 | 0 | .000 | .200 | .000 | .200 | .250 | .000 | .000 | 16.67 | 0.00 | 0.00 | 0.00 | |
| 1978 | Knoxville Sox | Sou | AA | CHA | - | 30 | P | 47 | 4 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 4 | 0 | 1 | .250 | .250 | .250 | .500 | .000 | .000 | .333 | 0.00 | 25.00 | 0.00 | 0.00 | |
| Tot: | MLB (3 yrs) | MLB | 105 | 41 | 6 | 9 | 0 | 0 | 0 | 6 | 0 | 0 | 2 | 11 | 0 | 6 | 0 | 0 | 0 | 9 | 49 | 0 | 9 | .220 | .256 | .220 | .475 | .049 | .000 | .300 | 4.08 | 22.45 | 5.50 | |||||||
| Tot: | NL (3 yrs) | NL | 105 | 41 | 6 | 9 | 0 | 0 | 0 | 6 | 0 | 0 | 2 | 11 | 0 | 6 | 0 | 0 | 0 | 9 | 49 | 0 | 9 | .220 | .256 | .220 | .475 | .049 | .000 | .300 | 4.08 | 22.45 | 5.50 | |||||||
| Tot: | Minors (3 yrs) | Minors | 73 | 27 | 2 | 5 | 1 | 0 | 0 | 1 | 0 | 0 | 3 | 5 | 0 | 4 | 0 | 0 | 0 | 6 | 34 | 1 | 4 | .185 | .267 | .222 | .489 | .148 | .037 | .227 | 8.82 | 14.71 | 1.67 | |||||||
| Tot: | AA (1 yrs) | AA | 47 | 4 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 4 | 0 | 1 | .250 | .250 | .250 | .500 | .000 | .000 | .333 | 0.00 | 25.00 | ||||||||
| Tot: | AAA (2 yrs) | AAA | 26 | 23 | 1 | 4 | 1 | 0 | 0 | 1 | 0 | 0 | 3 | 4 | 0 | 4 | 0 | 0 | 0 | 5 | 30 | 1 | 3 | .174 | .269 | .217 | .487 | .174 | .043 | .211 | 10.00 | 13.33 | 1.33 | |||||||
| Avg: | MLB - 162 game avg | MLB | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | ||||||
| Avg: | Minors - 162 game avg | College | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 55 | 66 | 27 | 74 | 27 | 46 | .479 |