| 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 |
| 1980 | Fresno State | NCBA | NCAA-1 | Sr | 21 | 11 | 4 | 3.00 | 19 | 16 | 9 | 0 | 3 | 0 | 0 | 129.0 | 98 | 54 | 43 | 0 | 33 | 107 | 0 | 0 | 0 | 1.02 | 6.84 | 0.00 | 2.30 | 7.47 | 3.77 | 3.24 | |
| 1980 | West Haven Whitecaps | East | AA | OAK | - | 21 | 4 | 6 | 4.14 | 11 | 9 | 6 | 0 | 2 | 0 | 0 | 76.0 | 75 | 42 | 35 | 3 | 30 | 49 | 2 | 0 | 0 | 1.38 | 8.88 | 0.36 | 3.55 | 5.80 | 4.97 | 1.63 |
| 1980 | Oakland Athletics | AL | MLB | OAK | 28 | 21 | 0 | 0 | 4.50 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 2.0 | 4 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2.00 | 18.00 | 0.00 | 0.00 | 0.00 | 4.50 | 0.00 |
| 1981 | Tacoma Tigers | PCL | AAA | OAK | - | 22 | 9 | 11 | 3.68 | 27 | 27 | 15 | 2 | 0 | 0 | 0 | 191.0 | 197 | 98 | 78 | 12 | 66 | 101 | 5 | 0 | 4 | 1.38 | 9.28 | 0.57 | 3.11 | 4.76 | 4.62 | 1.53 |
| 1981 | Oakland Athletics | AL | MLB | OAK | 28 | 22 | 0 | 0 | 0.00 | 2 | 0 | 0 | 0 | 2 | 2 | 0 | 2.0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1.00 | 4.50 | 0.00 | 4.50 | 0.00 | 0.00 | 0.00 |
| 1982 | Salt Lake Gulls | PCL | AAA | SEA | - | 23 | 12 | 9 | 4.49 | 25 | 25 | 8 | 0 | 0 | 0 | 0 | 168.1 | 212 | 105 | 84 | 19 | 31 | 118 | 5 | 0 | 2 | 1.44 | 11.33 | 1.02 | 1.66 | 6.31 | 5.61 | 3.81 |
| 1982 | Seattle Mariners | AL | MLB | SEA | 20 | 23 | 0 | 2 | 8.31 | 7 | 2 | 0 | 0 | 5 | 2 | 0 | 13.0 | 18 | 12 | 12 | 4 | 1 | 10 | 0 | 0 | 1 | 1.46 | 12.46 | 2.77 | 0.69 | 6.92 | 8.31 | 10.00 |
| 1983 | Iowa Cubs | Amer | AAA | CHN | - | 24 | 7 | 2 | 4.61 | 18 | 17 | 6 | 0 | 1 | 1 | 0 | 111.1 | 134 | 62 | 57 | 16 | 21 | 80 | 2 | 0 | 1 | 1.39 | 10.83 | 1.29 | 1.70 | 6.47 | 5.01 | 3.81 |
| 1983 | Chicago Cubs | NL | MLB | CHN | 42 | 24 | 0 | 2 | 4.97 | 11 | 1 | 0 | 0 | 10 | 1 | 1 | 25.1 | 34 | 15 | 14 | 2 | 12 | 20 | 0 | 0 | 0 | 1.82 | 12.08 | 0.71 | 4.26 | 7.11 | 5.33 | 1.67 |
| 1984 | Chicago Cubs | NL | MLB | CHN | 42 | 25 | 5 | 2 | 3.46 | 31 | 7 | 0 | 0 | 24 | 10 | 4 | 83.1 | 78 | 37 | 32 | 11 | 20 | 41 | 0 | 0 | 0 | 1.18 | 8.42 | 1.19 | 2.16 | 4.43 | 4.00 | 2.05 |
| 1985 | New York Yankees | AL | MLB | NYA | 43 | 26 | 6 | 8 | 3.21 | 51 | 3 | 0 | 0 | 48 | 16 | 2 | 98.0 | 95 | 41 | 35 | 5 | 29 | 64 | 1 | 0 | 1 | 1.27 | 8.72 | 0.46 | 2.66 | 5.88 | 3.77 | 2.21 |
| 1986 | Baltimore Orioles | AL | MLB | BAL | 42 | 27 | 6 | 4 | 4.46 | 52 | 1 | 0 | 0 | 51 | 22 | 3 | 107.0 | 105 | 56 | 53 | 13 | 41 | 83 | 1 | 0 | 4 | 1.36 | 8.83 | 1.09 | 3.45 | 6.98 | 4.71 | 2.02 |
| 1987 | Columbus Clippers | IL | AAA | NYA | - | 28 | 2 | 2 | 1.74 | 25 | 0 | 0 | 0 | 25 | 18 | 5 | 46.2 | 36 | 15 | 9 | 3 | 14 | 33 | 1 | 0 | 1 | 1.07 | 6.94 | 0.58 | 2.70 | 6.36 | 2.89 | 2.36 |
| 1987 | New York Yankees | AL | MLB | NYA | 46 | 28 | 3 | 1 | 7.64 | 16 | 1 | 0 | 0 | 15 | 6 | 0 | 33.0 | 42 | 28 | 28 | 7 | 12 | 23 | 0 | 1 | 0 | 1.64 | 11.45 | 1.91 | 3.27 | 6.27 | 7.64 | 1.92 |
| 1988 | Tacoma Tigers | PCL | AAA | OAK | - | 29 | 7 | 7 | 3.48 | 40 | 10 | 0 | 0 | 30 | 13 | 3 | 119.0 | 122 | 61 | 46 | 10 | 35 | 81 | 3 | 0 | 5 | 1.32 | 9.23 | 0.76 | 2.65 | 6.13 | 4.61 | 2.31 |
| 1988 | Oakland Athletics | AL | MLB | OAK | 46 | 29 | 0 | 1 | 4.70 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 7.2 | 6 | 6 | 4 | 0 | 5 | 6 | 1 | 0 | 0 | 1.43 | 7.04 | 0.00 | 5.87 | 7.04 | 7.04 | 1.20 |
| 1989 | Tacoma Tigers | PCL | AAA | OAK | - | 30 | 4 | 6 | 3.61 | 41 | 10 | 3 | 1 | 31 | 25 | 11 | 97.1 | 82 | 46 | 39 | 7 | 28 | 75 | 0 | 0 | 0 | 1.13 | 7.58 | 0.65 | 2.59 | 6.93 | 4.25 | 2.68 |
| 1990 | Phoenix Firebirds | PCL | AAA | SFN | - | 31 | 0 | 0 | 3.86 | 4 | 0 | 0 | 0 | 4 | 1 | 0 | 9.1 | 10 | 5 | 4 | 0 | 2 | 4 | 1 | 0 | 0 | 1.29 | 9.64 | 0.00 | 1.93 | 3.86 | 4.82 | 2.00 |
| Tot: | MLB (9 yrs) | MLB | 20 | 20 | 4.34 | 173 | 17 | 0 | 0 | 59 | 156 | 10 | 371.1 | 383 | 196 | 179 | 42 | 121 | 247 | 3 | 1 | 6 | 1.36 | 9.28 | 1.02 | 2.93 | 5.99 | 4.75 | 2.04 | ||||
| Tot: | AL (7 yrs) | AL | 15 | 16 | 4.56 | 131 | 9 | 0 | 0 | 48 | 122 | 5 | 262.2 | 271 | 144 | 133 | 29 | 89 | 186 | 3 | 1 | 6 | 1.37 | 9.29 | 0.99 | 3.05 | 6.37 | 4.93 | 2.09 | ||||
| Tot: | NL (2 yrs) | NL | 5 | 4 | 3.81 | 42 | 8 | 0 | 0 | 11 | 34 | 5 | 108.2 | 112 | 52 | 46 | 13 | 32 | 61 | 0 | 0 | 0 | 1.33 | 9.28 | 1.08 | 2.65 | 5.05 | 4.31 | 1.91 | ||||
| Tot: | Minors (8 yrs) | Minors | 45 | 43 | 3.87 | 191 | 98 | 38 | 3 | 58 | 93 | 19 | 819.0 | 868 | 434 | 352 | 70 | 227 | 541 | 19 | 0 | 13 | 1.34 | 9.54 | 0.77 | 2.49 | 5.95 | 4.77 | 2.38 | ||||
| Tot: | AA (1 yrs) | AA | 4 | 6 | 4.14 | 11 | 9 | 6 | 0 | 0 | 2 | 0 | 76.0 | 75 | 42 | 35 | 3 | 30 | 49 | 2 | 0 | 0 | 1.38 | 8.88 | 0.36 | 3.55 | 5.80 | 4.97 | 1.63 | ||||
| Tot: | AAA (7 yrs) | AAA | 41 | 37 | 3.84 | 180 | 89 | 32 | 3 | 58 | 91 | 19 | 743.0 | 793 | 392 | 317 | 67 | 197 | 492 | 17 | 0 | 13 | 1.33 | 9.61 | 0.81 | 2.39 | 5.96 | 4.75 | 2.50 | ||||
| Tot: | College (1 yrs) | College | 11 | 4 | 3.00 | 19 | 16 | 9 | 0 | 0 | 3 | 0 | 129.0 | 98 | 54 | 43 | 0 | 33 | 107 | 0 | 0 | 0 | 1.02 | 6.84 | 0.00 | 2.30 | 7.47 | 3.77 | 3.24 | ||||
| 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 |
| 1982 | Salt Lake Gulls | PCL | AAA | SEA | - | 23 | P | 25 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 1.000 | 1.000 | 1.000 | 2.000 | .000 | .000 | 1.000 | 0.00 | 0.00 | 0.00 | 0.00 | |
| 1983 | Chicago Cubs | NL | MLB | CHN | 42 | 24 | P | 11 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | .000 | 0.00 | 75.00 | 0.00 | 0.00 | |
| 1984 | Chicago Cubs | NL | MLB | CHN | 42 | 25 | P | 31 | 19 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 7 | 0 | 0 | 0 | 0 | 1 | 1 | 20 | 0 | 1 | .053 | .100 | .053 | .153 | .053 | .000 | .083 | 5.00 | 35.00 | 7.00 | 0.00 | |
| Tot: | MLB (2 yrs) | MLB | 42 | 23 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 10 | 0 | 0 | 0 | 0 | 1 | 1 | 24 | 0 | 1 | .043 | .083 | .043 | .127 | .043 | .000 | .077 | 4.17 | 41.67 | 10.00 | |||||||
| Tot: | NL (2 yrs) | NL | 42 | 23 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 10 | 0 | 0 | 0 | 0 | 1 | 1 | 24 | 0 | 1 | .043 | .083 | .043 | .127 | .043 | .000 | .077 | 4.17 | 41.67 | 10.00 | |||||||
| Tot: | Minors (1 yrs) | Minors | 25 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 1.000 | 1.000 | 1.000 | 2.000 | .000 | .000 | 1.000 | 0.00 | 0.00 | ||||||||
| Tot: | AAA (1 yrs) | AAA | 25 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 1.000 | 1.000 | 1.000 | 2.000 | .000 | .000 | 1.000 | 0.00 | 0.00 | ||||||||
| Avg: | MLB - 162 game avg | MLB | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | ||||||
| Avg: | Minors - 162 game avg | College | 162 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 | 🔒 |
| Strikeouts | Walks | Hittable | SO/BB | vs Power | Durability | Team Success |
| 56 | 75 | 45 | 77 | 45 | 52 | .517 |