| 1976 | Lethbridge | Pio | Rk | - | mtl | 17 | - | 3 | | 8.0 | 4.50 | 2.00 | 7.88 | -- | 10.13 | 12.38 | 0.82 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0-0 | 0 | -- |
| 1977 | West Palm Beach | FSL | A+ | - | mtl | 18 | - | 21 | 21 | 100.0 | 3.33 | 1.75 | 8.91 | 0.36 | 6.84 | 7.47 | 0.92 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 77-55 | 1 | -- |
| 1978 | West Palm Beach | FSL | A+ | - | mtl | 19 | 38 | 21 | 21 | 127.0 | 3.12 | 1.46 | 7.02 | 0.28 | 6.09 | 9.85 | 0.62 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 67-77 | 5 | Larry Bearnarth |
| | Memphis | Sou | AA | - | mtl | 19 | - | 3 | 3 | 20.0 | 0.45 | 1.25 | 6.30 | -- | 4.95 | 11.25 | 0.44 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 71-73 | 2 | Felipe Alou |
| | Montreal | NL | MLB | 20 | mtl | 19 | - | 4 | 1 | 4.0 | 9.00 | 2.00 | 9.00 | 2.25 | 9.00 | 6.75 | 1.33 | 0.60 | 0 | 0 | 15 | .267 | 19 | -- | -- | -- | -- | 76-86 | 4 | Dick Williams |
| 1979 | Denver | Amer | AAA | - | mtl | 20 | 17 | 26 | 26 | 132.0 | 6.68 | 1.98 | 9.48 | 0.75 | 8.39 | 8.32 | 1.01 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 62-73 | 3 | Jack McKeon |
| | Montreal | NL | MLB | 20 | mtl | 20 | - | 2 | 0 | 2.0 | 13.50 | 2.50 | 9.00 | -- | 13.50 | 4.50 | 3.00 | 1.50 | 0 | 0 | 8 | .250 | 11 | -- | -- | -- | -- | 95-65 | 2 | Dick Williams |
| 1980 | Denver | Amer | AAA | - | mtl | 21 | 36 | 17 | 17 | 87.0 | 3.83 | 1.61 | 6.83 | 0.21 | 7.66 | 8.17 | 0.94 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 92-44 | 1 | Billy Gardner |
| 1981 | Denver | Amer | AAA | - | mtl | 22 | - | 20 | 15 | 57.0 | 5.68 | 1.96 | 6.79 | 0.63 | 10.89 | 7.26 | 1.50 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 76-60 | 2 | Felipe Alou |
| 1982 | Montreal | NL | MLB | 20 | mtl | 23 | - | 7 | 0 | 9.0 | 6.00 | 2.00 | 10.00 | -- | 8.00 | 11.00 | 0.73 | 0.67 | 0 | 0 | 0 | -- | 0 | -- | -- | -- | -- | 86-76 | 3 | Jim Fanning |
| | Detroit | AL | MLB | 24 | det | 23 | - | 12 | 1 | 19.2 | 5.03 | 1.53 | 10.07 | 1.83 | 3.66 | 9.15 | 0.40 | 1.00 | 0 | 0 | 79 | .278 | 87 | -- | -- | -- | -- | 83-79 | 4 | Sparky Anderson |
| 1983 | Wichita | Amer | AAA | - | mtl | 24 | - | 22 | 2 | 31.0 | 4.65 | 1.68 | 7.84 | 0.87 | 7.26 | 11.61 | 0.63 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 65-71 | 3 | Felipe Alou |
| | Detroit | AL | MLB | 24 | det | 24 | - | 4 | 0 | 4.0 | 11.25 | 2.00 | 11.25 | 4.50 | 6.75 | 9.00 | 0.75 | 6.00 | 0 | 0 | 0 | -- | 0 | -- | -- | -- | -- | 92-70 | 2 | Sparky Anderson |
| | Montreal | NL | MLB | 42 | mtl | 24 | - | 27 | 0 | 50.0 | 2.88 | 1.20 | 6.66 | 0.54 | 4.14 | 10.08 | 0.41 | 1.47 | 0 | 3 | 176 | .210 | 208 | -- | -- | -- | -- | 82-80 | 3 | Bill Virdon |
| 1984 | Montreal | NL | MLB | 42 | mtl | 25 | 54 | 62 | 0 | 96.0 | 3.66 | 1.43 | 8.63 | 0.56 | 4.22 | 8.53 | 0.49 | 0.98 | 0 | 4 | 367 | .251 | 430 | -- | -- | -- | -- | 78-83 | 5 | Bill Virdon, Jim Fanning |
| 1985 | Chi White Sox | AL | MLB | 43 | chw | 26 | 33 | 69 | 0 | 110.0 | 2.13 | 1.03 | 7.36 | 0.41 | 1.88 | 7.20 | 0.26 | 0.79 | 0 | 2 | 399 | .226 | 436 | -- | -- | -- | -- | 85-77 | 3 | Tony LaRussa |
| 1986 | Chi White Sox | AL | MLB | 43 | chw | 27 | 53 | 49 | 0 | 58.1 | 5.25 | 1.44 | 9.41 | 1.23 | 3.55 | 4.94 | 0.72 | 1.01 | 0 | 4 | 228 | .268 | 263 | -- | -- | -- | -- | 72-90 | 5 | Jim Fregosi, Tony LaRussa, Doug Rader |
| 1987 | Chi White Sox | AL | MLB | 43 | chw | 28 | 57 | 43 | 0 | 54.0 | 4.67 | 1.31 | 9.00 | 1.67 | 2.83 | 5.67 | 0.50 | 0.76 | 0 | 4 | 211 | .256 | 238 | -- | -- | -- | -- | 77-85 | 5 | Jim Fregosi |
| Minor League Totals (7 years) | 133 | 105 | 562 | 5 | 1.72 | 7.91 | 0.45 | 7.57 | 8.73 | 0.87 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | .530 | -- | |
| AAA Totals (4 years) | 85 | 60 | 307 | 4 | 1.84 | 8.06 | 0.59 | 8.53 | 8.41 | 1.01 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | .543 | -- | |
| AA Totals (1 year) | 3 | 3 | 20 | 0 | 1.25 | 6.30 | 0.00 | 4.95 | 11.25 | 0.44 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | .493 | -- | |
| A+ Totals (2 years) | 42 | 42 | 227 | 1 | 1.59 | 7.85 | 0.32 | 6.42 | 8.80 | 0.73 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | .522 | -- | |
| Rookie Totals (1 year) | 3 | 0 | 8 | 0 | 2.00 | 7.88 | 0.00 | 10.13 | 12.38 | 0.82 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | |