| Year | Team | Lg | Level | Unif | Org | Age | Rk | G | GS | IP | ERA | WHIP | H9 | HR9 | BB9 | SO9 | BB/SO | GB/FB | QS | HB | AB | Bavg | TBF | Pit/B | Bal | Str | Sw | Record | TR | Manager(s) |
| 1979 | GCL Pirates | GCL | Rk | - | pit | 18 | 14 | 11 | 9 | 59.0 | 6.41 | 1.93 | 11.59 | 1.07 | 5.80 | 5.03 | 1.15 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 20-32 | 6 | Woody Huyke |
| 1980 | Shelby | SAL | A | - | pit | 19 | 3 | 26 | 26 | 168.0 | 4.82 | 1.36 | 8.57 | 1.02 | 3.70 | 6.32 | 0.58 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 58-80 | 4 | Joe Frisina |
| 1981 | Buffalo | East | AA | 27 | pit | 20 | 9 | 25 | 25 | 159.0 | 3.11 | 1.45 | 7.70 | 0.79 | 5.32 | 8.94 | 0.59 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 56-81 | 4 | Johnny Lipon |
| 1982 | Portland | PCL | AAA | - | pit | 21 | 69 | 24 | 23 | 119.0 | 5.97 | 1.71 | 10.44 | 1.13 | 4.92 | 7.11 | 0.69 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 65-79 | 5 | Tom Trebelhorn |
| 1983 | Hawaii | PCL | AAA | - | pit | 22 | 25 | 20 | 20 | 127.1 | 3.04 | 1.24 | 6.36 | 0.64 | 4.81 | 9.05 | 0.53 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 72-71 | 3 | Tom Trebelhorn |
| Pittsburgh | NL | MLB | 25 | pit | 22 | 67 | 15 | 15 | 108.0 | 2.83 | 1.13 | 6.25 | 0.42 | 3.92 | 9.83 | 0.40 | 0.81 | 11 | 1 | 383 | .196 | 438 | -- | -- | -- | -- | 84-78 | 2 | Chuck Tanner | |
| 1984 | Pittsburgh | NL | MLB | 25 | pit | 23 | 19 | 30 | 28 | 192.1 | 3.74 | 1.24 | 6.88 | 0.47 | 4.31 | 7.16 | 0.60 | 0.79 | 16 | 3 | 686 | .214 | 795 | -- | -- | -- | -- | 75-87 | 6 | Chuck Tanner |
| 1985 | Hawaii | PCL | AAA | - | pit | 24 | 48 | 5 | 5 | 41.0 | 0.88 | 0.61 | 3.29 | 0.66 | 2.20 | 9.88 | 0.22 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 84-59 | 1 | Tommy Sandt |
| Pittsburgh | NL | MLB | 25 | pit | 24 | 24 | 31 | 25 | 162.2 | 4.70 | 1.40 | 7.64 | 0.83 | 4.92 | 8.24 | 0.60 | 0.71 | 11 | 3 | 597 | .231 | 700 | -- | -- | -- | -- | 57-104 | 6 | Chuck Tanner | |
| 1986 | Hawaii | PCL | AAA | - | pit | 25 | 32 | 15 | 14 | 106.0 | 2.46 | 1.24 | 7.39 | 0.42 | 3.74 | 7.05 | 0.53 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 65-79 | 4 | Tommy Sandt |
| Chi White Sox | AL | MLB | 26 | chw | 25 | - | 13 | 13 | 79.0 | 2.96 | 1.15 | 5.58 | 0.80 | 4.78 | 7.75 | 0.62 | 0.71 | 8 | 4 | 274 | .179 | 325 | -- | -- | -- | -- | 72-90 | 5 | Jim Fregosi, Tony LaRussa, Doug Rader | |
| Pittsburgh | NL | MLB | 25 | pit | 25 | - | 9 | 1 | 16.1 | 8.27 | 2.08 | 9.37 | 1.10 | 9.37 | 6.06 | 1.55 | 0.65 | 0 | 0 | 0 | -- | 0 | -- | -- | -- | -- | 64-98 | 6 | Jim Leyland | |
| 1987 | Chi White Sox | AL | MLB | 26 | chw | 26 | 33 | 33 | 31 | 206.0 | 4.02 | 1.33 | 7.73 | 1.05 | 4.24 | 6.68 | 0.63 | 0.75 | 19 | 10 | 770 | .230 | 889 | -- | -- | -- | -- | 77-85 | 5 | Jim Fregosi |
| 1988 | St. Louis | NL | MLB | 48 | stl | 27 | 22 | 34 | 34 | 225.1 | 3.67 | 1.26 | 7.91 | 0.52 | 3.43 | 8.31 | 0.41 | 0.65 | 19 | 2 | 835 | .237 | 939 | 3.77 | 38.2 | 61.8 | 12.3 | 76-86 | 5 | Whitey Herzog |
| 1989 | St. Louis | NL | MLB | 48 | stl | 28 | 1 | 36 | 36 | 244.2 | 3.05 | 1.03 | 6.36 | 0.59 | 2.94 | 7.39 | 0.40 | 0.62 | 21 | 6 | 878 | .197 | 972 | 3.66 | 37.9 | 62.1 | 10.5 | 86-76 | 3 | Whitey Herzog |
| 1990 | St. Louis | NL | MLB | 48 | stl | 29 | 19 | 32 | 32 | 182.2 | 4.43 | 1.39 | 8.28 | 0.74 | 4.24 | 8.08 | 0.52 | 0.52 | 18 | 5 | 683 | .246 | 793 | 3.48 | 38.9 | 61.1 | 11.2 | 70-92 | 6 | Whitey Herzog, Joe Torre, Red Schoendienst |
| 1991 | St. Louis | NL | MLB | 48 | stl | 30 | 39 | 28 | 28 | 162.2 | 2.71 | 1.26 | 7.97 | 0.83 | 3.37 | 6.53 | 0.52 | 0.65 | 17 | 6 | 603 | .239 | 679 | 3.76 | 37.4 | 62.6 | 10.1 | 84-78 | 2 | Joe Torre |
| 1992 | St. Louis | NL | MLB | 48 | stl | 31 | - | 29 | 15 | 102.1 | 4.57 | 1.35 | 8.36 | 0.62 | 3.78 | 6.33 | 0.60 | 0.57 | 5 | 2 | 387 | .245 | 442 | 3.55 | 39.1 | 60.9 | 8.7 | 83-79 | 3 | Joe Torre |
| Philadelphia | NL | MLB | 50 | phi | 31 | - | 3 | 3 | 15.0 | 3.00 | 1.40 | 9.60 | -- | 3.00 | 4.20 | 0.71 | 0.55 | 0 | 0 | 0 | -- | 0 | -- | 40.3 | 59.7 | 5.8 | 70-92 | 6 | Jim Fregosi | |
| 1993 | Chi White Sox | AL | MLB | 48 | chw | 32 | - | 11 | 0 | 10.1 | 1.74 | 0.77 | 4.35 | 1.74 | 2.61 | 5.23 | 0.50 | 0.42 | 0 | 1 | 33 | .152 | 37 | 4.19 | 43.2 | 56.8 | 11.6 | 94-68 | 1 | Gene Lamont |
| Philadelphia | NL | MLB | 50 | phi | 32 | - | 24 | 3 | 47.0 | 3.26 | 1.40 | 7.47 | 0.96 | 5.17 | 6.51 | 0.79 | 0.63 | 0 | 0 | 0 | -- | 0 | -- | 40.5 | 59.5 | 10.2 | 97-65 | 1 | Jim Fregosi | |
| 1994 | Chi White Sox | AL | MLB | 48 | chw | 33 | - | 42 | 0 | 67.0 | 3.36 | 1.18 | 6.45 | 0.67 | 4.16 | 9.00 | 0.46 | 0.55 | 0 | 6 | 240 | .200 | 288 | 3.84 | 37.8 | 62.2 | 9.7 | 67-46 | 1 | Gene Lamont |
| 1995 | Montreal | NL | MLB | 46 | mtl | 34 | - | 7 | 0 | 8.1 | 7.56 | 1.68 | 7.56 | 2.16 | 7.56 | 12.96 | 0.58 | 0.18 | 0 | 0 | 0 | -- | 0 | -- | 38.6 | 61.4 | 13.9 | 66-78 | 5 | Felipe Alou |
| Chi White Sox | AL | MLB | 48 | chw | 34 | - | 38 | 0 | 67.2 | 5.19 | 1.30 | 7.98 | 1.33 | 3.72 | 7.05 | 0.53 | 0.41 | 0 | 6 | 252 | .238 | 293 | 3.96 | 41.8 | 58.2 | 8.9 | 68-76 | 3 | Terry Bevington, Gene Lamont | |
| MLB Totals (13 years) | 415 | 264 | 1897 | 8 | 1.26 | 7.38 | 0.73 | 3.99 | 7.56 | 0.53 | 0.63 | 145 | 55 | 6621 | .235 | 7590 | -- | 38.6 | 61.4 | 10.6 | .484 | -- | ||||||||
| Minor League Totals (7 years) | 126 | 122 | 779 | 0 | 1.40 | 8.11 | 0.83 | 4.48 | 7.61 | 0.59 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | .466 | -- | ||||||||
| AAA Totals (4 years) | 64 | 62 | 393 | 0 | 1.32 | 7.56 | 0.73 | 4.28 | 8.02 | 0.53 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | .498 | -- | ||||||||
| AA Totals (1 year) | 25 | 25 | 159 | 0 | 1.45 | 7.70 | 0.79 | 5.32 | 8.94 | 0.59 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | .409 | -- | ||||||||
| A Totals (1 year) | 26 | 26 | 168 | 0 | 1.36 | 8.57 | 1.02 | 3.70 | 6.32 | 0.58 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | .420 | -- | ||||||||
| Rookie Totals (1 year) | 11 | 9 | 59 | 0 | 1.93 | 11.59 | 1.07 | 5.80 | 5.03 | 1.15 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | .385 | -- | ||||||||