| YR | CLUB | W-L | ERA | G | GS | CG | SHO | SV | IP | H | R | ER | BB | SO |
| 1985 | Fresno | 8-2 | 3.33 | 14 | 13 | 3 | 0 | 0 | 94.2 | 83 | 39 | 35 | 37 | 85 |
| 1986 | Shreveport | 8-10 | 3.48 | 26 | 26 | 8 | 3 | 0 | 165.2 | 139 | 78 | 64 | 68 | 125 |
| 1987 | Shreveport | 0-1 | 3.09 | 2 | 2 | 0 | 0 | 0 | 11.2 | 12 | 7 | 4 | 4 | 7 |
| Phoenix | 6-11 | 4.65 | 29 | 28 | 2 | 0 | 0 | 170.1 | 187 | 110 | 88 | 82 | 111 | |
| 1988 | Phoenix | 9-5 | 4.33 | 27 | 19 | 1 | 0 | 0 | 122.2 | 130 | 65 | 59 | 39 | 83 |
| SAN FRANCISCO | 0-1 | 5.66 | 9 | 1 | 0 | 0 | 1 | 20.2 | 22 | 13 | 13 | 6 | 11 | |
| 1989 | SAN FRANCISCO | 7-1 | 4.07 | 59 | 1 | 0 | 0 | 0 | 97.1 | 101 | 50 | 44 | 37 | 69 |
| Phoenix | 1-1 | 1.26 | 7 | 0 | 0 | 0 | 3 | 14.1 | 6 | 2 | 2 | 6 | 20 | |
| 1990 | SAN FRANCISCO | 5-3 | 1.56 | 55 | 0 | 0 | 0 | 19 | 86.2 | 77 | 18 | 15 | 33 | 61 |
| 1991 | SAN FRANCISCO | 5-2 | 2.45 | 67 | 0 | 0 | 0 | 15 | 95.1 | 78 | 27 | 26 | 52 | 81 |
| 1992 | SAN FRANCISCO | 7-7 | 2.95 | 56 | 4 | 0 | 0 | 7 | 91.2 | 67 | 32 | 30 | 45 | 86 |
| 1993 | SAN FRANCISCO | 5-6 | 4.28 | 53 | 12 | 0 | 0 | 0 | 113.2 | 112 | 60 | 54 | 46 | 76 |
| 1994 | CINCINATTI | 6-6 | 2.48 | 50 | 0 | 0 | 0 | 15 | 65.1 | 46 | 20 | 18 | 28 | 63 |
| 1995 | CINCINATTI | 3-2 | 2.82 | 56 | 0 | 0 | 0 | 28 | 70.1 | 53 | 22 | 22 | 20 | 62 |
| 1996 | CINCINATTI | 1-2 | 2.41 | 66 | 0 | 0 | 0 | 44 | 71.0 | 54 | 21 | 19 | 28 | 76 |
| 1997 | CINCINATTI | 1-1 | 3.86 | 13 | 0 | 0 | 0 | 1 | 11.2 | 9 | 5 | 5 | 7 | 16 |
| 1998 | ST LOUIS | 0-5 | 4.44 | 48 | 0 | 0 | 0 | 14 | 50.2 | 40 | 26 | 25 | 18 | 48 |
| Arkansas | 0-0 | 0.00 | 2 | 0 | 0 | 0 | 0 | 1.2 | 0 | 0 | 0 | 1 | 3 | |
| 1999 | PHILLIES | 1-2 | 5.19 | 10 | 0 | 0 | 0 | 5 | 8.2 | 5 | 6 | 5 | 8 | 11 |
| TOTAL | MAJOR LEAGUE | 41-38 | 3.17 | 542 | 18 | 0 | 0 | 149 | 783.0 | 664 | 300 | 276 | 328 | 660 |