| 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 |
| 1977 | South Carolina | IndyNCAA | NCAA-1 | Jr | 21 | 14 | 0 | 1.98 | 16 | 16 | 10 | 1 | 0 | 0 | 0 | 131.2 | 104 | 35 | 29 | 0 | 36 | 106 | 0 | 0 | 0 | 1.06 | 7.11 | 0.00 | 2.46 | 7.25 | 2.39 | 2.94 | |
| 1977 | Gulf Coast Cubs | GCL | Rk | CHN | - | 21 | 0 | 1 | 0.00 | 2 | 1 | 0 | 0 | 1 | 0 | 0 | 9.0 | 4 | 1 | 0 | 0 | 2 | 8 | 1 | 0 | 0 | 0.67 | 4.00 | 0.00 | 2.00 | 8.00 | 1.00 | 4.00 |
| 1977 | Midland Cubs | Tex | AA | CHN | - | 21 | 5 | 3 | 4.13 | 12 | 12 | 5 | 0 | 0 | 0 | 0 | 85.0 | 96 | 45 | 39 | 10 | 14 | 42 | 5 | 0 | 0 | 1.29 | 10.16 | 1.06 | 1.48 | 4.45 | 4.76 | 3.00 |
| 1978 | Midland Cubs | Tex | AA | CHN | - | 22 | 8 | 6 | 3.12 | 18 | 16 | 7 | 0 | 2 | 0 | 0 | 127.0 | 126 | 53 | 44 | 9 | 44 | 74 | 6 | 0 | 7 | 1.34 | 8.93 | 0.64 | 3.12 | 5.24 | 3.76 | 1.68 |
| 1978 | Wichita Aeros | Amer | AAA | CHN | - | 22 | 3 | 7 | 7.17 | 11 | 11 | 1 | 0 | 0 | 0 | 0 | 59.0 | 82 | 51 | 47 | 4 | 27 | 24 | 2 | 0 | 1 | 1.85 | 12.51 | 0.61 | 4.12 | 3.66 | 7.78 | 0.89 |
| 1979 | Wichita Aeros | Amer | AAA | CHN | - | 23 | 8 | 13 | 4.10 | 30 | 26 | 5 | 1 | 4 | 0 | 0 | 178.0 | 196 | 96 | 81 | 21 | 47 | 66 | 4 | 0 | 2 | 1.37 | 9.91 | 1.06 | 2.38 | 3.34 | 4.85 | 1.40 |
| 1980 | Gulf Coast Cubs | GCL | Rk | CHN | - | 24 | 0 | 0 | 2.57 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 7.0 | 5 | 4 | 2 | 1 | 1 | 2 | 1 | 0 | 0 | 0.86 | 6.43 | 1.29 | 1.29 | 2.57 | 5.14 | 2.00 |
| 1980 | Wichita Aeros | Amer | AAA | CHN | - | 24 | 8 | 6 | 3.11 | 16 | 16 | 2 | 1 | 0 | 0 | 0 | 107.0 | 98 | 41 | 37 | 9 | 29 | 53 | 5 | 0 | 2 | 1.19 | 8.24 | 0.76 | 2.44 | 4.46 | 3.45 | 1.83 |
| 1980 | Chicago Cubs | NL | MLB | CHN | 34 | 24 | 1 | 2 | 2.08 | 6 | 6 | 0 | 0 | 0 | 0 | 0 | 30.1 | 28 | 14 | 7 | 1 | 11 | 5 | 0 | 0 | 0 | 1.29 | 8.31 | 0.30 | 3.26 | 1.48 | 4.15 | 0.45 |
| 1981 | Chicago Cubs | NL | MLB | CHN | 34 | 25 | 5 | 7 | 3.68 | 33 | 14 | 1 | 0 | 19 | 10 | 6 | 107.2 | 103 | 49 | 44 | 6 | 49 | 32 | 3 | 0 | 1 | 1.41 | 8.61 | 0.50 | 4.10 | 2.67 | 4.10 | 0.65 |
| 1982 | Chicago Cubs | NL | MLB | CHN | 34 | 26 | 11 | 10 | 4.21 | 28 | 24 | 1 | 0 | 4 | 2 | 1 | 147.2 | 157 | 80 | 69 | 17 | 36 | 40 | 1 | 0 | 3 | 1.31 | 9.57 | 1.04 | 2.19 | 2.44 | 4.88 | 1.11 |
| 1983 | Denver Bears | Amer | AAA | CHA | - | 27 | 8 | 7 | 5.12 | 21 | 21 | 5 | 1 | 0 | 0 | 0 | 128.1 | 158 | 79 | 73 | 15 | 44 | 60 | 7 | 0 | 2 | 1.57 | 11.08 | 1.05 | 3.09 | 4.21 | 5.54 | 1.36 |
| 1983 | Chicago White Sox | AL | MLB | CHA | 33 | 27 | 0 | 0 | 3.60 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 5.0 | 4 | 2 | 2 | 0 | 4 | 1 | 0 | 0 | 0 | 1.60 | 7.20 | 0.00 | 7.20 | 1.80 | 3.60 | 0.25 |
| 1984 | Richmond Braves | IL | AAA | ATL | - | 28 | 3 | 5 | 4.33 | 36 | 1 | 0 | 0 | 35 | 24 | 9 | 62.1 | 69 | 36 | 30 | 6 | 24 | 28 | 2 | 0 | 2 | 1.49 | 9.96 | 0.87 | 3.47 | 4.04 | 5.20 | 1.17 |
| 1985 | Tucson Toros | PCL | AAA | HOU | - | 29 | 2 | 5 | 5.33 | 24 | 15 | 0 | 0 | 9 | 5 | 1 | 101.1 | 121 | 70 | 60 | 8 | 41 | 33 | 3 | 0 | 0 | 1.60 | 10.75 | 0.71 | 3.64 | 2.93 | 6.22 | 0.80 |
| 1985 | Iowa Cubs | Amer | AAA | CHN | - | 29 | 0 | 1 | 4.91 | 4 | 0 | 0 | 0 | 4 | 0 | 0 | 7.1 | 10 | 4 | 4 | 0 | 4 | 0 | 0 | 0 | 0 | 1.91 | 12.27 | 0.00 | 4.91 | 0.00 | 4.91 | 0.00 |
| Tot: | MLB (4 yrs) | MLB | 17 | 19 | 3.78 | 68 | 45 | 2 | 0 | 12 | 23 | 7 | 290.2 | 292 | 145 | 122 | 24 | 100 | 78 | 4 | 0 | 4 | 1.35 | 9.04 | 0.74 | 3.10 | 2.42 | 4.49 | 0.78 | ||||
| Tot: | AL (1 yrs) | AL | 0 | 0 | 3.60 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 5.0 | 4 | 2 | 2 | 0 | 4 | 1 | 0 | 0 | 0 | 1.60 | 7.20 | 0.00 | 7.20 | 1.80 | 3.60 | 0.25 | ||||
| Tot: | NL (3 yrs) | NL | 17 | 19 | 3.78 | 67 | 44 | 2 | 0 | 12 | 23 | 7 | 285.2 | 288 | 143 | 120 | 24 | 96 | 77 | 4 | 0 | 4 | 1.34 | 9.07 | 0.76 | 3.02 | 2.43 | 4.51 | 0.80 | ||||
| Tot: | Minors (7 yrs) | Minors | 45 | 54 | 4.31 | 176 | 121 | 25 | 3 | 29 | 55 | 10 | 871.1 | 965 | 480 | 417 | 83 | 277 | 390 | 36 | 0 | 16 | 1.43 | 9.97 | 0.86 | 2.86 | 4.03 | 4.96 | 1.41 | ||||
| Tot: | Rk (2 yrs) | Rk | 0 | 1 | 1.12 | 4 | 3 | 0 | 0 | 0 | 1 | 0 | 16.0 | 9 | 5 | 2 | 1 | 3 | 10 | 2 | 0 | 0 | 0.75 | 5.06 | 0.56 | 1.69 | 5.62 | 2.81 | 3.33 | ||||
| Tot: | AA (2 yrs) | AA | 13 | 9 | 3.52 | 30 | 28 | 12 | 0 | 0 | 2 | 0 | 212.0 | 222 | 98 | 83 | 19 | 58 | 116 | 11 | 0 | 7 | 1.32 | 9.42 | 0.81 | 2.46 | 4.92 | 4.16 | 2.00 | ||||
| Tot: | AAA (6 yrs) | AAA | 32 | 44 | 4.64 | 142 | 90 | 13 | 3 | 29 | 52 | 10 | 643.1 | 734 | 377 | 332 | 63 | 216 | 264 | 23 | 0 | 9 | 1.48 | 10.27 | 0.88 | 3.02 | 3.69 | 5.27 | 1.22 | ||||
| Tot: | College (1 yrs) | College | 14 | 0 | 1.98 | 16 | 16 | 10 | 1 | 0 | 0 | 0 | 131.2 | 104 | 35 | 29 | 0 | 36 | 106 | 0 | 0 | 0 | 1.06 | 7.11 | 0.00 | 2.46 | 7.25 | 2.39 | 2.94 | ||||
| Avg: | MLB - 162 Inning avg | MLB | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | ||||
| Avg: | Minors - 162 Inning avg | College | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 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 |
| 1977 | Midland Cubs | Tex | AA | CHN | - | 21 | P | 12 | 12 | 0 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 1 | 6 | 0 | 1 | 0 | 0 | 0 | 2 | 14 | 0 | 2 | .167 | .231 | .167 | .398 | .083 | .000 | .333 | 7.14 | 42.86 | 6.00 | 0.00 | |
| 1978 | Wichita Aeros | Amer | AAA | CHN | - | 22 | P | 11 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 100.00 | 0.00 | 0.00 | |
| 1979 | Wichita Aeros | Amer | AAA | CHN | - | 23 | P | 30 | 13 | 2 | 4 | 1 | 0 | 0 | 1 | 0 | 0 | 6 | 7 | 0 | 1 | 0 | 0 | 0 | 5 | 20 | 1 | 3 | .308 | .526 | .385 | .911 | .538 | .077 | .667 | 30.00 | 35.00 | 1.17 | 0.00 | |
| 1980 | Wichita Aeros | Amer | AAA | CHN | - | 24 | P | 16 | 5 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 5 | 0 | 2 | .400 | .400 | .400 | .800 | .000 | .000 | .500 | 0.00 | 20.00 | 0.00 | 0.00 | |
| 1980 | Chicago Cubs | NL | MLB | CHN | 34 | 24 | P | 6 | 9 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 9 | 0 | 1 | .111 | .111 | .111 | .222 | .000 | .000 | .250 | 0.00 | 55.56 | 0.00 | 0.00 | |
| 1981 | Chicago Cubs | NL | MLB | CHN | 34 | 25 | P | 34 | 28 | 0 | 6 | 0 | 0 | 0 | 2 | 0 | 0 | 3 | 13 | 0 | 2 | 0 | 0 | 1 | 6 | 33 | 0 | 6 | .214 | .290 | .214 | .504 | .107 | .000 | .400 | 9.09 | 39.39 | 4.33 | 0.00 | |
| 1982 | Chicago Cubs | NL | MLB | CHN | 34 | 26 | P | 28 | 42 | 6 | 6 | 2 | 0 | 0 | 6 | 0 | 0 | 6 | 17 | 0 | 7 | 0 | 0 | 1 | 8 | 55 | 2 | 4 | .143 | .250 | .190 | .440 | .190 | .047 | .240 | 10.91 | 30.91 | 2.83 | 0.00 | |
| 1984 | Richmond Braves | IL | AAA | ATL | - | 28 | P | 36 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 0.00 | 0.00 | 0.00 | |
| 1985 | Tucson Toros | PCL | AAA | HOU | - | 29 | P | 24 | 20 | 2 | 4 | 2 | 0 | 0 | 1 | 0 | 0 | 1 | 11 | 0 | 1 | 0 | 0 | 0 | 6 | 22 | 2 | 2 | .200 | .238 | .300 | .538 | .150 | .100 | .444 | 4.55 | 50.00 | 11.00 | 0.00 | |
| 1985 | Iowa Cubs | Amer | AAA | CHN | - | 29 | P | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 100.00 | 0.00 | 0.00 | |
| Tot: | MLB (3 yrs) | MLB | 68 | 79 | 6 | 13 | 2 | 0 | 0 | 8 | 0 | 0 | 9 | 35 | 0 | 9 | 0 | 0 | 2 | 15 | 97 | 2 | 11 | .165 | .250 | .190 | .440 | .139 | .025 | .295 | 9.28 | 36.08 | 3.89 | |||||||
| Tot: | NL (3 yrs) | NL | 68 | 79 | 6 | 13 | 2 | 0 | 0 | 8 | 0 | 0 | 9 | 35 | 0 | 9 | 0 | 0 | 2 | 15 | 97 | 2 | 11 | .165 | .250 | .190 | .440 | .139 | .025 | .295 | 9.28 | 36.08 | 3.89 | |||||||
| Tot: | Minors (6 yrs) | Minors | 135 | 55 | 4 | 12 | 3 | 0 | 0 | 4 | 0 | 0 | 8 | 29 | 0 | 3 | 0 | 0 | 0 | 15 | 66 | 3 | 9 | .218 | .317 | .273 | .590 | .200 | .055 | .462 | 12.12 | 43.94 | 3.63 | |||||||
| Tot: | Rk (1 yrs) | Rk | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||||||
| Tot: | AA (1 yrs) | AA | 12 | 12 | 0 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 1 | 6 | 0 | 1 | 0 | 0 | 0 | 2 | 14 | 0 | 2 | .167 | .231 | .167 | .397 | .083 | .000 | .333 | 7.14 | 42.86 | 6.00 | |||||||
| Tot: | AAA (5 yrs) | AAA | 121 | 43 | 4 | 10 | 3 | 0 | 0 | 2 | 0 | 0 | 7 | 23 | 0 | 2 | 0 | 0 | 0 | 13 | 52 | 3 | 7 | .233 | .340 | .302 | .642 | .233 | .070 | .500 | 13.46 | 44.23 | 3.29 | |||||||
| Avg: | MLB - 162 game avg | MLB | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | ||||||
| Avg: | Minors - 162 game avg | College | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 15 | 74 | 41 | 44 | 41 | 62 | .500 |