| Date | Opp | Result | Dec | GS | IP | AB | BF | H | R | ER | HR | BB | IBB | SO | HBP | SH | SF | WP | BK | ERA | WHIP | K/9 | BB/9 | FIP | ERA+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1984 — Wareham · Tennessee | |||||||||||||||||||||||||
| Season Total 5-0 | 7 | 50.2 | 46 | 31 | 27 | 3 | 28 | 40 | 4.84 | 1.47 | 7.17 | 5.02 | — | 100 |
| Year | Level | Team | Org | G | GS | IP | H | R | ER | BB | SO | HR | W | L | SV | ERA | WHIP | K/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1989 | AA | Williamsport | Seattle Mariners | 10 | 10 | 54.2 | 59 | 28 | 23 | 13 | 41 | 5 | 3 | 4 | 0 | 3.79 | 1.32 | 6.75 |
| 1990 | AA | Williamsport | Seattle Mariners | 18 | 18 | 115.0 | 92 | 30 | 27 | 30 | 76 | 7 | 6 | 6 | 0 | 2.11 | 1.06 | 5.95 |
| 1990 | MLB | Seattle Mariners | Seattle Mariners | 5 | 5 | 36.0 | 30 | 9 | 8 | 9 | 20 | 2 | 1 | 2 | 0 | 2.00 | 1.08 | 5.00 |
| 1991 | MLB | Seattle Mariners | Seattle Mariners | 32 | 31 | 182.0 | 176 | 107 | 103 | 78 | 98 | 31 | 12 | 13 | 0 | 5.09 | 1.40 | 4.85 |
| 1992 | MLB | Seattle Mariners | Seattle Mariners | 30 | 11 | 83.2 | 100 | 55 | 51 | 35 | 66 | 13 | 3 | 6 | 1 | 5.49 | 1.61 | 7.10 |
| 1993 | MLB | Seattle Mariners | Seattle Mariners | 30 | 1 | 42.2 | 46 | 24 | 22 | 23 | 48 | 5 | 3 | 6 | 0 | 4.64 | 1.62 | 10.13 |
| 1994 | MLB | Cincinnati Reds | Cincinnati Reds | 8 | 0 | 10.2 | 9 | 6 | 5 | 5 | 15 | 4 | 0 | 0 | 0 | 4.22 | 1.31 | 12.66 |
| 1995 | MLB | St. Louis Cardinals | St. Louis Cardinals | 56 | 1 | 82.1 | 63 | 38 | 31 | 36 | 76 | 9 | 8 | 7 | 0 | 3.39 | 1.20 | 8.31 |
| 1996 | MLB | San Francisco Giants | San Francisco Giants | 56 | 0 | 61.2 | 62 | 44 | 40 | 31 | 55 | 8 | 3 | 6 | 0 | 5.84 | 1.51 | 8.03 |
| 1997 | MLB | Los Angeles Angels - San Francisco Giants | Los Angeles Angels - San Francisco Giants | 36 | 0 | 44.0 | 35 | 21 | 19 | 27 | 44 | 5 | 6 | 4 | 3 | 3.89 | 1.41 | 9.00 |
| 1998 | MLB | Los Angeles Angels | Los Angeles Angels | 61 | 0 | 71.2 | 56 | 36 | 34 | 46 | 73 | 10 | 2 | 6 | 3 | 4.27 | 1.42 | 9.17 |
| 1999 | MLB | Cleveland Guardians | Cleveland Guardians | 6 | 0 | 9.1 | 13 | 7 | 7 | 9 | 7 | 4 | 0 | 1 | 0 | 6.75 | 2.36 | 6.75 |
| 1990–1999 | MLB | Career (10 yrs) | 320 | 49 | 624.0 | 590 | 347 | 320 | 299 | 502 | 91 | 38 | 51 | 7 | 4.62 | 1.42 | 7.24 | |
| 1989–1990 | AA | Career (2 yrs) | 28 | 28 | 169.2 | 151 | 58 | 50 | 43 | 117 | 12 | 9 | 10 | 0 | 2.65 | 1.14 | 6.21 |