Sport-specific career totals from the active profile tables, with VAL shown whenever the sport has a value file.
| Season | Age | Team | GP | G | GS | W | L | SV | IP | SO | BB | H | ER | HR | ERA | WHIP | VAL |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1984 | 21 | KC | 29 | 29 | 29 | 10 | 14 | 0 | 189.0 | 111 | 75 | 172 | 85 | 13 | 4.05 | 1.31 | 7.1 |
| 1985 | 22 | KC | 29 | 29 | 28 | 14 | 10 | 0 | 177.1 | 99 | 77 | 160 | 80 | 14 | 4.06 | 1.34 | 7.7 |
| 1986 | 23 | KC | 35 | 35 | 24 | 12 | 6 | 0 | 180.2 | 118 | 84 | 155 | 73 | 8 | 3.64 | 1.32 | 9.1 |
| 1987 | 24 | KC | 35 | 35 | 35 | 13 | 18 | 0 | 241.2 | 166 | 120 | 231 | 107 | 18 | 3.98 | 1.45 | 9.5 |
| 1988 | 25 | KC | 35 | 35 | 35 | 20 | 8 | 0 | 269.2 | 183 | 83 | 237 | 81 | 11 | 2.70 | 1.19 | 12.4 |
| 1989 | 26 | KC | 36 | 36 | 36 | 15 | 11 | 0 | 255.0 | 173 | 63 | 252 | 86 | 10 | 3.04 | 1.24 | 11.2 |
| 1990 | 27 | KC | 16 | 16 | 16 | 4 | 7 | 0 | 94.0 | 71 | 38 | 101 | 47 | 5 | 4.50 | 1.48 | 3.4 |
| 1991 | 28 | KC | 26 | 26 | 26 | 9 | 12 | 0 | 133.0 | 89 | 42 | 168 | 84 | 10 | 5.68 | 1.58 | 4.2 |
| 1992 | 29 | KC | 18 | 18 | 18 | 7 | 6 | 0 | 111.1 | 81 | 36 | 110 | 46 | 8 | 3.72 | 1.31 | 4.9 |
| 1993 | 30 | KC | 49 | 49 | 6 | 5 | 8 | 2 | 104.1 | 80 | 43 | 128 | 54 | 2 | 4.66 | 1.64 | 7.3 |
| 1994 | 31 | KC | 22 | 22 | 22 | 7 | 9 | 0 | 130.0 | 59 | 26 | 158 | 65 | 11 | 4.50 | 1.42 | 5.3 |
| 1995 | 32 | KC | 33 | 33 | 33 | 12 | 14 | 0 | 213.1 | 81 | 62 | 222 | 89 | 21 | 3.75 | 1.33 | 9.1 |
| 1996 | 33 | KC | 19 | 19 | 19 | 4 | 12 | 0 | 119.1 | 55 | 34 | 132 | 68 | 22 | 5.13 | 1.39 | 4.4 |
| 1997 | 34 | LAA | 2 | 2 | 2 | 0 | 1 | 0 | 4.2 | 5 | 3 | 13 | 13 | 2 | 25.07 | 3.43 | β |