| Season | Team | ERA | G | W | L | SV | HLD | IP | H | HR | BB | SO | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Career | 16 Seasons | 3.29 | 602 | 152 | 112 | 53 | 33 | 2204.0 | 797 | 1751 | 1.17 | ||
| 2005 | KIA | 3.20 | 18 | 0 | 1 | 0 | 3 | 19.0 | 0 | 0 | 8 | 15 | 1.63 |
| 2004 | KIA | 2.95 | 79 | 6 | 2 | 7 | 7 | 85.0 | 0 | 0 | 31 | 56 | 1.16 |
| 2003 | KIA | 1.98 | 67 | 6 | 4 | 9 | 14 | 68.0 | 0 | 0 | 23 | 57 | 0.96 |
| 2002 | KIA | 3.17 | 66 | 5 | 2 | 17 | 8 | 105.0 | 0 | 0 | 36 | 97 | 1.12 |
| 2001 | KIA | 6.91 | 27 | 2 | 3 | 1 | 1 | 56.0 | 0 | 0 | 20 | 50 | 1.41 |
| 2000 | 삼성 | 7.30 | 14 | 1 | 4 | 0 | 0 | 37.0 | 0 | 0 | 17 | 20 | 1.68 |
| 1998 | 해태 | 3.11 | 31 | 15 | 11 | 0 | 0 | 179.0 | 0 | 0 | 47 | 160 | 1.18 |
| 1997 | 해태 | 2.99 | 30 | 11 | 3 | 2 | 0 | 162.0 | 0 | 0 | 60 | 128 | 1.17 |
| 1996 | 해태 | 2.46 | 28 | 10 | 9 | 1 | 0 | 153.0 | 0 | 0 | 47 | 119 | 1.05 |
| 1995 | 해태 | 3.24 | 29 | 10 | 10 | 1 | 0 | 150.0 | 0 | 0 | 53 | 126 | 1.20 |
| 1994 | 해태 | 3.64 | 33 | 12 | 15 | 1 | 0 | 185.0 | 0 | 0 | 105 | 140 | 1.38 |
| 1993 | 해태 | 3.04 | 31 | 10 | 10 | 1 | 0 | 154.0 | 0 | 0 | 65 | 131 | 1.16 |
| 1992 | 해태 | 3.44 | 33 | 18 | 9 | 0 | 0 | 217.0 | 0 | 0 | 71 | 156 | 1.15 |
| 1991 | 해태 | 3.19 | 36 | 15 | 11 | 3 | 0 | 214.0 | 0 | 0 | 54 | 193 | 0.99 |
| 1990 | 해태 | 3.14 | 44 | 16 | 10 | 5 | 0 | 220.0 | 0 | 0 | 84 | 165 | 1.12 |
| 1989 | 해태 | 3.23 | 36 | 15 | 8 | 5 | 0 | 195.0 | 0 | 0 | 76 | 138 | 1.17 |
| Category | Stats | KBO Rank | Team Rank |
|---|---|---|---|
| G | 602 | - | - |
| ERA | 3.29 | - | - |
| IP | 2204.0 | - | - |
| W | 152 | - | - |
| L | 112 | - | - |
| SV | 53 | - | - |
| HLD | 33 | - | - |
| SO | 1,751 | - | - |
| H | 0 | - | - |
| HR | 0 | - | - |
| BB | 797 | - | - |
| R | 889 | - | - |
| ER | 805 | - | - |
| HBP | 189 | - | - |
| WHIP | 1.17 | - | - |
Yagoonara