| Year | Tm | G | W | L | Sv | IP | K | ERA | WHIP | R$ | T15 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1986 | CHC | 6 | 2 | 4 | 0 | 31 | 20 | 5.52 | 1.77 | -$2 | |
| 1987 | CHC | 30 | 6 | 14 | 0 | 155 | 101 | 5.61 | 1.64 | -$2 | |
| 1988 | CHC | 34 | 18 | 8 | 0 | 249 | 140 | 3.18 | 1.25 | $17 | |
| 1989 | CHC | 35 | 19 | 12 | 0 | 238 | 135 | 2.95 | 1.28 | $17 | |
| 1990 | CHC | 35 | 15 | 15 | 0 | 237 | 144 | 3.46 | 1.32 | $15 | |
| 1991 | CHC | 37 | 15 | 11 | 0 | 263 | 198 | 3.35 | 1.13 | $22 | T15 |
| 1992 | CHC | 35 | 20 | 11 | 0 | 268 | 199 | 2.18 | 1.01 | $35 | T15 |
| 1993 | ATL | 36 | 20 | 10 | 0 | 267 | 197 | 2.36 | 1.05 | $37 | T15 |
| 1994 | ATL | 25 | 16 | 6 | 0 | 202 | 156 | 1.56 | 0.90 | $42 | T15 |
| 1995 | ATL | 28 | 19 | 2 | 0 | 209 | 181 | 1.63 | 0.81 | $44 | T15 |
| 1996 | ATL | 35 | 15 | 11 | 0 | 245 | 172 | 2.72 | 1.03 | $32 | T15 |
| 1997 | ATL | 33 | 19 | 4 | 0 | 232 | 177 | 2.20 | 0.95 | $32 | T15 |
| 1998 | ATL | 34 | 18 | 9 | 0 | 251 | 204 | 2.22 | 0.98 | $38 | T15 |
| 1999 | ATL | 33 | 19 | 9 | 0 | 219 | 136 | 3.57 | 1.35 | $19 | |
| 2000 | ATL | 35 | 19 | 9 | 0 | 249 | 190 | 3.00 | 1.07 | $35 | T15 |
| 2001 | ATL | 34 | 17 | 11 | 0 | 233 | 173 | 3.05 | 1.06 | $29 | T15 |
| 2002 | ATL | 34 | 16 | 6 | 0 | 199 | 118 | 2.62 | 1.20 | $19 | |
| 2003 | ATL | 36 | 16 | 11 | 0 | 218 | 124 | 3.96 | 1.18 | $16 | |
| 2004 | CHC | 33 | 16 | 11 | 0 | 212 | 151 | 4.02 | 1.18 | $18 | |
| 2005 | CHC | 35 | 13 | 15 | 0 | 225 | 136 | 4.24 | 1.22 | $12 | |
| 2006 | CHC-LAD | 34 | 15 | 14 | 0 | 210 | 117 | 4.20 | 1.22 | $15 | |
| 2007 | SDP | 34 | 14 | 11 | 0 | 198 | 104 | 4.14 | 1.24 | $13 | |
| 2008 | SDP-LAD | 33 | 8 | 13 | 0 | 194 | 98 | 4.22 | 1.21 | $9 |