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 | 22 | BOS | 5 | 5 | 2 | 1 | 0 | 0 | 26.2 | 16 | 9 | 17 | 5 | 0 | 1.69 | 0.98 | — |
| 1986 | 23 | BOS | 9 | 9 | 6 | 2 | 3 | 0 | 35.2 | 14 | 11 | 46 | 21 | 4 | 5.30 | 1.60 | 1.2 |
| 1987 | 24 | BOS | 9 | 9 | 6 | 1 | 1 | 0 | 37.0 | 15 | 15 | 53 | 29 | 6 | 7.05 | 1.84 | 0.4 |
| 1988 | 25 | BOS | 1 | 1 | 0 | 0 | 0 | 0 | 0.2 | 0 | 1 | 2 | 1 | 0 | 13.50 | 4.50 | — |
Gave the Boston Red Sox an entire corpus-attributed career — 4 seasons (1985–1988), one crest. The rarest loyalty in the sport.