| 1985 | Arkansas | Tex | AA | 22 | 23 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .932 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 11 | 30 | 3 |
| 1986 | Louisville | Amer | AAA | 23 | 28 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .981 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 17 | 35 | 1 |
| 1987 | Vancouver | PCL | AAA | 24 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.000 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 3 | 11 | 0 |
| | Pittsburgh | NL | MLB | 24 | 23 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .980 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 18 | 32 | 1 |
| 1988 | Pittsburgh | NL | MLB | 25 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .978 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 18 | 27 | 1 |
| 1989 | Calgary | PCL | AAA | 26 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .867 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 5 | 8 | 2 |
| | Seattle | AL | MLB | 26 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .955 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 7 | 14 | 1 |
| | Pittsburgh | NL | MLB | 26 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.000 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0 | 3 | 0 |
| 1990 | Las Vegas | PCL | AAA | 27 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.000 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0 | 9 | 0 |
| | San Diego | NL | MLB | 27 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.000 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 4 | 5 | 0 |
| 1991 | Vancouver | PCL | AAA | 28 | 17 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.000 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0 | 9 | 0 |
| 1992 | Vancouver | PCL | AAA | 29 | 21 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .913 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 7 | 14 | 2 |
| | Chi White Sox | AL | MLB | 29 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.000 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 1 | 2 | 0 |
| 1993 | GCL White Sox | GCL | Rk | 30 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.000 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0 | 1 | 0 |
| | Sarasota | FSL | A+ | 30 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.000 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 6 | 2 | 0 |
| 1994 | Scranton/WB | IL | AAA | 31 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .889 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 3 | 5 | 1 |
Minor League Totals | 127 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .951 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 52 | 124 | 9 |