| 1978 | Modesto | Calif | A+ | 19 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 91 | 0 | -- | -- | 1.000 | -- | -- | -- | -- | -- | -- | .934 | 201 | 10 | 13 |
| 1979 | Modesto | Calif | A+ | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 39 | 0 | -- | -- | -- | -- | -- | -- | -- | -- | -- | .919 | 76 | 3 | 7 |
| | Waterbury | East | AA | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 90 | 0 | -- | -- | -- | -- | -- | -- | -- | -- | -- | .935 | 208 | 7 | 15 |
| 1980 | Little Falls | NYPL | A- | 21 | 0 | 0 | 0 | 19 | 50 | 0 | 0 | 0 | 0 | 0 | 0 | -- | -- | -- | 1.000 | .906 | -- | -- | -- | -- | -- | 91 | 112 | 12 |
| | Ogden | PCL | AAA | 21 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 17 | 0 | -- | -- | -- | -- | -- | -- | -- | -- | -- | .973 | 34 | 2 | 1 |
| | Oakland | AL | MLB | 21 | 0 | 0 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 18 | 6 | -- | -- | .980 | -- | -- | -- | -- | -- | -- | 1.000 | 76 | 7 | 1 |
| 1981 | Jackson | Tex | AA | 22 | 0 | 0 | 0 | 0 | 118 | 0 | 0 | 0 | 0 | 0 | 0 | -- | -- | -- | -- | .965 | -- | -- | -- | -- | -- | 96 | 238 | 12 |
| | Tacoma | PCL | AAA | 22 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 121 | 0 | -- | -- | 1.000 | -- | -- | -- | -- | -- | -- | .976 | 286 | 7 | 7 |
| | Oakland | AL | MLB | 22 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 3 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 1.000 | 3 | 0 | 0 |
| 1982 | Tidewater | IL | AAA | 23 | 0 | 0 | 4 | 0 | 93 | 12 | 0 | 0 | 0 | 7 | 0 | -- | -- | 1.000 | -- | .935 | .933 | -- | -- | -- | 1.000 | 113 | 170 | 17 |
| | Tacoma | PCL | AAA | 23 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 96 | 0 | -- | -- | 1.000 | -- | -- | -- | -- | -- | -- | .959 | 197 | 13 | 9 |
| | Oakland | AL | MLB | 23 | 0 | 0 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 0 | -- | -- | .919 | -- | -- | -- | -- | -- | -- | .946 | 65 | 4 | 5 |
| 1983 | Pawtucket | IL | AAA | 24 | 0 | 0 | 0 | 0 | 66 | 0 | 0 | 0 | 0 | 0 | 0 | -- | -- | -- | -- | .885 | -- | -- | -- | -- | -- | 43 | 95 | 18 |
| | Oakland | AL | MLB | 24 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 121 | 3 | -- | -- | -- | -- | -- | -- | -- | -- | -- | .974 | 278 | 16 | 8 |
| 1984 | Pawtucket | IL | AAA | 25 | 0 | 0 | 0 | 0 | 38 | 23 | 0 | 0 | 0 | 0 | 0 | -- | -- | -- | -- | .935 | .921 | -- | -- | -- | -- | 56 | 115 | 13 |
| | Oakland | AL | MLB | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 127 | 4 | -- | -- | -- | -- | -- | -- | -- | -- | -- | .961 | 287 | 6 | 12 |
| 1985 | Tidewater | IL | AAA | 26 | 0 | 0 | 37 | 2 | 18 | 0 | 0 | 0 | 0 | 14 | 0 | -- | -- | .981 | 1.000 | .921 | -- | -- | -- | -- | 1.000 | 265 | 47 | 8 |
| | Oakland | AL | MLB | 26 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 151 | 0 | -- | -- | -- | -- | -- | -- | -- | -- | -- | .979 | 370 | 6 | 8 |
| 1986 | Tidewater | IL | AAA | 27 | 0 | 0 | 30 | 0 | 0 | 1 | 0 | 0 | 0 | 32 | 0 | -- | -- | .988 | -- | -- | 1.000 | -- | -- | -- | .979 | 273 | 19 | 4 |
| | Oakland | AL | MLB | 27 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 139 | 0 | -- | -- | -- | -- | -- | -- | -- | -- | -- | .973 | 310 | 9 | 9 |
| 1987 | Oakland | AL | MLB | 28 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 124 | 14 | -- | -- | -- | -- | -- | -- | -- | -- | -- | .942 | 210 | 3 | 13 |
| 1988 | LA Dodgers | NL | MLB | 29 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 76 | 0 | -- | -- | -- | -- | -- | -- | -- | -- | -- | .961 | 121 | 3 | 5 |
| 1989 | LA Dodgers | NL | MLB | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 48 | 0 | -- | -- | -- | -- | -- | -- | -- | -- | -- | .987 | 74 | 1 | 1 |
Minor League Totals | 0 | 0 | 77 | 21 | 383 | 36 | 0 | 0 | 0 | 507 | 0 | -- | -- | .986 | 1.000 | .933 | .927 | -- | -- | -- | .954 | 1939 | 838 | 136 |