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 | 21 | BOS | 4 | 4 | 4 | 2 | 0 | 0 | 22.1 | 6 | 7 | 24 | 9 | 1 | 3.63 | 1.39 | — |
| 1986 | 22 | BOS | 14 | 14 | 13 | 3 | 7 | 0 | 82.0 | 51 | 40 | 90 | 45 | 13 | 4.94 | 1.59 | 2.4 |
| 1987 | 23 | BOS | 25 | 25 | 22 | 7 | 8 | 0 | 139.2 | 99 | 61 | 161 | 82 | 10 | 5.28 | 1.59 | 4.7 |
| 1988 | 24 | BOS | 18 | 18 | 12 | 1 | 7 | 0 | 85.2 | 70 | 56 | 89 | 46 | 9 | 4.83 | 1.69 | 2.2 |
Gave the Boston Red Sox an entire corpus-attributed career — 4 seasons (1985–1988), one crest. The rarest loyalty in the sport.