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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1985 | 20 | CWS | 12 | 12 | 11 | 3 | 3 | 0 | 71.1 | 37 | 26 | 71 | 33 | 6 | 4.16 | 1.36 | 2.7 |
| 1986 | 21 | CWS | 19 | 19 | 19 | 4 | 5 | 0 | 105.1 | 54 | 51 | 115 | 55 | 9 | 4.70 | 1.58 | 3.2 |
| 1987 | 22 | CWS | 13 | 13 | 9 | 1 | 5 | 0 | 55.0 | 25 | 29 | 56 | 35 | 7 | 5.73 | 1.55 | 1.7 |
| 1988 | 23 | CWS | 5 | 5 | 2 | 0 | 1 | 0 | 16.0 | 10 | 5 | 21 | 12 | 4 | 6.75 | 1.63 | — |
Gave the Chicago White Sox an entire corpus-attributed career — 4 seasons (1985–1988), one crest. The rarest loyalty in the sport.