| Season | Team | ERA | G | W | L | SV | HLD | IP | H | HR | BB | SO | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Career | 14 Seasons | 4.64 | 309 | 67 | 73 | 3 | 3 | 1201.0 | 550 | 694 | 1.49 | ||
| 2009 | LG | 5.63 | 10 | 3 | 2 | 0 | 0 | 48.0 | 0 | 0 | 23 | 28 | 1.56 |
| 2008 | LG | 5.90 | 11 | 1 | 5 | 0 | 0 | 39.0 | 0 | 0 | 19 | 14 | 1.77 |
| 2007 | LG | 4.67 | 26 | 7 | 7 | 0 | 1 | 108.0 | 0 | 0 | 59 | 58 | 1.57 |
| 2006 | LG | 4.29 | 15 | 3 | 5 | 0 | 0 | 84.0 | 0 | 0 | 35 | 48 | 1.46 |
| 2005 | LG | 4.07 | 27 | 13 | 6 | 0 | 0 | 163.0 | 0 | 0 | 60 | 106 | 1.31 |
| 2004 | LG | 4.75 | 27 | 8 | 7 | 0 | 0 | 96.0 | 0 | 0 | 40 | 64 | 1.60 |
| 2003 | LG | 4.48 | 19 | 4 | 3 | 0 | 1 | 76.0 | 0 | 0 | 24 | 40 | 1.63 |
| 2002 | LG | 4.41 | 31 | 6 | 11 | 0 | 0 | 138.0 | 0 | 0 | 61 | 53 | 1.36 |
| 2001 | LG | - | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | - |
| 2000 | LG | 5.47 | 19 | 2 | 6 | 1 | 1 | 77.0 | 0 | 0 | 44 | 47 | 1.47 |
| 1999 | 현대 | 6.62 | 35 | 6 | 10 | 0 | 0 | 123.0 | 0 | 0 | 58 | 80 | 1.76 |
| 1998 | 현대 | 3.04 | 39 | 10 | 5 | 1 | 0 | 151.0 | 0 | 0 | 77 | 112 | 1.29 |
| 1997 | 현대 | 4.46 | 37 | 4 | 5 | 1 | 0 | 78.0 | 0 | 0 | 41 | 40 | 1.62 |
| 1996 | 현대 | 3.45 | 12 | 0 | 0 | 0 | 0 | 15.0 | 0 | 0 | 8 | 4 | 1.60 |
| Category | Stats | KBO Rank | Team Rank |
|---|---|---|---|
| G | 309 | - | - |
| ERA | 4.64 | - | - |
| IP | 1201.0 | - | - |
| W | 67 | - | - |
| L | 73 | - | - |
| SV | 3 | - | - |
| HLD | 3 | - | - |
| SO | 694 | - | - |
| H | 0 | - | - |
| HR | 0 | - | - |
| BB | 550 | - | - |
| R | 666 | - | - |
| ER | 619 | - | - |
| HBP | 90 | - | - |
| WHIP | 1.49 | - | - |
Yagoonara