| Primary Position: Pitcher | Bats: R Throws: R |
| Born: May 27, 1963 | Location: Humacao, P.R. |
| Played in 13 Major League seasons (1982-1994) | |
| Year | League | Team | Age | Shark WAR | Pitching WAR | G | GS | IP | W | L | CG | SV | R | BB | SO | Pitch Runs Saved | ERA | WHIP | SOper9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1982 | AL | SEA | 19 | 0.3 | 0.3 | 8 | 5 | 35.33 | 1 | 2 | 0 | 0 | 18 | 16 | 27 | 2.55 | 4.58 | 1.47 | 6.88 |
| 1983 | AL | SEA | 20 | 0.2 | 0.2 | 14 | 5 | 37.00 | 0 | 4 | 0 | 0 | 21 | 22 | 35 | 1.66 | 4.38 | 1.68 | 8.51 |
| 1984 | AL | SEA | 21 | 1.6 | 1.6 | 37 | 0 | 67.67 | 2 | 2 | 0 | 7 | 26 | 21 | 57 | 14.38 | 3.19 | 1.12 | 7.58 |
| 1985 | AL | SEA | 22 | 2.6 | 2.6 | 70 | 0 | 90.33 | 7 | 3 | 0 | 16 | 36 | 34 | 58 | 20.62 | 3.09 | 1.25 | 5.78 |
| 1986 | AL | SEA | 23 | -0.2 | -0.2 | 14 | 1 | 21.67 | 1 | 2 | 0 | 0 | 15 | 5 | 17 | -1.55 | 5.82 | 1.38 | 7.06 |
| 1987 | AL | SEA | 24 | 1.2 | 1.2 | 48 | 0 | 47.33 | 3 | 4 | 0 | 12 | 20 | 18 | 34 | 11.22 | 3.80 | 1.33 | 6.46 |
| 1988 | AL | SEA | 25 | -1.7 | -1.7 | 14 | 3 | 29.33 | 1 | 4 | 0 | 0 | 33 | 14 | 19 | -14.87 | 7.98 | 2.01 | 5.83 |
| NL | NYN | 25 | -0.1 | -0.1 | 10 | 0 | 14.00 | 1 | 0 | 0 | 0 | 7 | 3 | 8 | -0.49 | 4.50 | 1.71 | 5.14 | |
| 1989 | AL | DET | 26 | -0.3 | -0.3 | 27 | 0 | 54.00 | 3 | 4 | 0 | 1 | 33 | 36 | 41 | -2.51 | 4.17 | 1.57 | 6.83 |
| 1990 | AL | DET | 27 | 2.9 | 2.9 | 42 | 0 | 80.33 | 3 | 1 | 0 | 6 | 26 | 37 | 66 | 21.16 | 2.24 | 1.27 | 7.39 |
| 1991 | AL | ML4 | 28 | -0.7 | -0.7 | 23 | 0 | 25.33 | 2 | 1 | 0 | 8 | 20 | 13 | 24 | -6.14 | 6.04 | 1.62 | 8.53 |
| 1992 | AL | ML4 | 29 | 0.3 | 0.3 | 10 | 0 | 13.67 | 1 | 1 | 0 | 0 | 5 | 6 | 10 | 2.99 | 2.63 | 1.32 | 6.59 |
| AL | TEX | 29 | -0.4 | -0.4 | 39 | 0 | 45.67 | 0 | 2 | 0 | 3 | 29 | 16 | 39 | -3.35 | 5.52 | 1.47 | 7.69 | |
| 1993 | AL | OAK | 30 | 1.0 | 1.0 | 56 | 0 | 75.67 | 3 | 6 | 0 | 1 | 36 | 29 | 58 | 9.44 | 3.81 | 1.56 | 6.90 |
| 1994 | AL | OAK | 31 | -1.1 | -1.1 | 15 | 0 | 15.00 | 0 | 0 | 0 | 0 | 20 | 10 | 15 | -11.38 | 12.00 | 2.40 | 9.00 |
| Career Totals | 5.6 | 5.6 | 427 | 14 | 652.3 | 28 | 36 | 0 | 54 | 345 | 280 | 508 | 43.72 | 4.19 | 1.45 | 7.01 | |||