| Year | Team | W | L | G | IP | ERA | WHIP | K | BB | HR | K/9 | BB/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1979 | New York Yankees | 0 | 1 | 3 | 17.1 | 3.63 | 1.15 | 13 | 10 | 2 | 6.75 | 5.19 |
| 1981 |
| New York Yankees |
| 8 |
| 4 |
| 15 |
| 105.1 |
| 2.05 |
| 1.07 |
| 89 |
| 38 |
| 1 |
| 7.60 |
| 3.25 |
| 1982 | New York Yankees | 11 | 10 | 33 | 183.0 | 3.79 | 1.44 | 163 | 108 | 11 | 8.02 | 5.31 |
| 1983 | New York Yankees | 14 | 8 | 31 | 217.0 | 3.44 | 1.20 | 169 | 67 | 12 | 7.01 | 2.78 |
| 1984 | New York Yankees | 5 | 6 | 64 | 96.1 | 2.34 | 1.20 | 90 | 37 | 5 | 8.41 | 3.46 |
| 1985 | New York Yankees | 12 | 7 | 74 | 107.0 | 2.78 | 1.32 | 92 | 45 | 5 | 7.74 | 3.79 |
| 1986 | New York Yankees | 8 | 8 | 74 | 106.2 | 2.45 | 1.15 | 83 | 35 | 4 | 7.00 | 2.95 |
| 1987 | New York Yankees | 8 | 6 | 60 | 95.0 | 3.51 | 1.46 | 77 | 44 | 9 | 7.29 | 4.17 |
| 1988 | New York Yankees | 5 | 4 | 60 | 87.0 | 3.52 | 1.41 | 70 | 37 | 5 | 7.24 | 3.83 |
| 1989 | New York Yankees | 2 | 6 | 55 | 69.0 | 3.00 | 1.43 | 51 | 26 | 3 | 6.65 | 3.39 |
| 1990 | New York Yankees | 1 | 1 | 53 | 53.0 | 3.57 | 1.40 | 43 | 26 | 8 | 7.30 | 4.42 |
| 1991 | San Francisco Giants | 2 | 7 | 61 | 71.2 | 3.39 | 1.28 | 51 | 28 | 4 | 6.40 | 3.52 |
| 1992 | San Francisco Giants | 2 | 7 | 54 | 78.1 | 5.06 | 1.47 | 47 | 36 | 4 | 5.40 | 4.14 |
| 1993 | San Francisco Giants | 1 | 1 | 51 | 47.1 | 5.70 | 1.58 | 31 | 17 | 11 | 5.89 | 3.23 |
| 1994 | Oakland Athletics | 0 | 0 | 7 | 7.0 | 16.71 | 3.14 | 4 | 9 | 3 | 5.14 | 11.57 |
| 1994 | Toronto Blue Jays | 0 | 1 | 13 | 13.1 | 6.75 | 1.43 | 10 | 10 | 2 | 6.75 | 6.75 |
| 1994 | 0 | 1 | 20 | 20.1 | 10.18 | 2.02 | 14 | 19 | 5 | 6.20 | 8.41 |
| 1995 | Chicago White Sox | 3 | 2 | 10 | 49.1 | 4.20 | 1.68 | 29 | 18 | 6 | 5.29 | 3.28 |
| Career | — | 82 | 79 | 718 | 1403.2 | 3.46 | 1.34 | 1,112 | 591 | 95 | 7.13 | 3.79 |
