| Season | Team | ERA | G | W | L | SV | HLD | IP | H | HR | BB | SO | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Career | 13 Seasons | 3.51 | 343 | 55 | 39 | 14 | 958.0 | 288 | 467 | 1.26 | |||
| 1998 | OB | 36.00 | 1 | 0 | 0 | 0 | 0 | 1.0 | 0 | 0 | 1 | 0 | 6.00 |
| 1997 | LG | 2.19 | 29 | 0 | 0 | 0 | 0 | 12.0 | 0 | 0 | 15 | 3 | 1.50 |
| 1996 | LG | 3.73 | 46 | 0 | 2 | 1 | 0 | 41.0 | 0 | 0 | 23 | 22 | 1.34 |
| 1995 | LG | 1.86 | 22 | 3 | 0 | 2 | 0 | 19.0 | 0 | 0 | 6 | 10 | 1.05 |
| 1994 | LG | 5.59 | 11 | 0 | 0 | 0 | 0 | 9.0 | 0 | 0 | 2 | 2 | 1.44 |
| 1993 | 해태 | 4.38 | 17 | 1 | 1 | 1 | 0 | 37.0 | 0 | 0 | 15 | 16 | 1.57 |
| 1992 | 해태 | 4.46 | 35 | 13 | 9 | 0 | 0 | 137.0 | 0 | 0 | 40 | 65 | 1.44 |
| 1991 | 해태 | 2.45 | 45 | 14 | 7 | 5 | 0 | 176.0 | 0 | 0 | 31 | 85 | 1.07 |
| 1990 | 해태 | 4.09 | 42 | 5 | 8 | 3 | 0 | 143.0 | 0 | 0 | 47 | 56 | 1.31 |
| 1989 | 해태 | 3.41 | 33 | 9 | 5 | 1 | 0 | 153.0 | 0 | 0 | 31 | 92 | 1.08 |
| 1988 | 해태 | 2.43 | 22 | 5 | 2 | 1 | 0 | 81.0 | 0 | 0 | 19 | 40 | 1.31 |
| 1987 | 해태 | 3.03 | 31 | 5 | 4 | 0 | 0 | 127.0 | 0 | 0 | 53 | 67 | 1.30 |
| 1986 | 해태 | 8.53 | 9 | 0 | 1 | 0 | 0 | 19.0 | 0 | 0 | 5 | 9 | 1.68 |
| Category | Stats | KBO Rank | Team Rank |
|---|---|---|---|
| G | 343 | - | - |
| ERA | 3.51 | - | - |
| IP | 958.0 | - | - |
| W | 55 | - | - |
| L | 39 | - | - |
| SV | 14 | - | - |
| HLD | 0 | - | - |
| SO | 467 | - | - |
| H | 0 | - | - |
| HR | 0 | - | - |
| BB | 288 | - | - |
| R | 411 | - | - |
| ER | 374 | - | - |
| HBP | 19 | - | - |
| WHIP | 1.26 | - | - |
Yagoonara