| 1985 | Memphis | Sou | AA | 21 | 0 | 61 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | .973 | -- | -- | -- | -- | -- | -- | -- | -- | 295 | 24 | 9 |
| 1987 | KC Royals | AL | MLB | 23 | 0 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | 1.000 | -- | -- | -- | -- | -- | -- | -- | -- | 29 | 2 | 0 |
| 1988 | Omaha | Amer | AAA | 24 | 0 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | .989 | -- | -- | -- | -- | -- | -- | -- | -- | 85 | 5 | 1 |
| | KC Royals | AL | MLB | 24 | 0 | 68 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | .994 | -- | -- | -- | -- | -- | -- | -- | -- | 309 | 18 | 2 |
| 1989 | KC Royals | AL | MLB | 25 | 0 | 59 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | -- | .996 | -- | -- | -- | -- | -- | -- | -- | -- | 249 | 17 | 1 |
| 1990 | KC Royals | AL | MLB | 26 | 0 | 112 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | -- | .991 | -- | -- | -- | -- | -- | -- | -- | -- | 660 | 23 | 6 |
| 1991 | KC Royals | AL | MLB | 27 | 0 | 69 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | -- | .993 | -- | -- | -- | -- | -- | -- | -- | -- | 391 | 28 | 3 |
| 1992 | KC Royals | AL | MLB | 28 | 0 | 104 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | -- | .993 | -- | -- | -- | -- | -- | -- | -- | -- | 527 | 43 | 4 |
| 1993 | KC Royals | AL | MLB | 29 | 0 | 114 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | .985 | -- | -- | -- | -- | -- | -- | -- | -- | 647 | 68 | 11 |
| 1994 | KC Royals | AL | MLB | 30 | 0 | 81 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | -- | .993 | -- | -- | -- | -- | -- | -- | -- | -- | 498 | 39 | 4 |
| 1995 | Boston | AL | MLB | 31 | 0 | 111 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | -- | .993 | -- | -- | -- | -- | -- | -- | -- | -- | 618 | 49 | 5 |
| 1996 | KC Royals | AL | MLB | 32 | 0 | 99 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | -- | .993 | -- | -- | -- | -- | -- | -- | -- | -- | 511 | 35 | 4 |
| 1997 | KC Royals | AL | MLB | 33 | 0 | 81 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | .991 | -- | -- | -- | -- | -- | -- | -- | -- | 439 | 20 | 4 |
| 1998 | KC Royals | AL | MLB | 34 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | 1.000 | -- | -- | -- | -- | -- | -- | -- | -- | 13 | 3 | 0 |
| | Oakland | AL | MLB | 34 | 0 | 70 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | .989 | -- | -- | -- | -- | -- | -- | -- | -- | 355 | 20 | 4 |
| 1999 | Oakland | AL | MLB | 35 | 0 | 79 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | -- | .997 | -- | -- | -- | -- | -- | -- | -- | -- | 351 | 43 | 1 |
Minor League Totals | 0 | 76 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | .976 | -- | -- | -- | -- | -- | -- | -- | -- | 380 | 29 | 10 |