| Season | Team | ERA | G | W | L | SV | HLD | IP | H | HR | BB | SO | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Career | 15 Seasons | 4.29 | 346 | 112 | 98 | 3 | 1769.0 | 768 | 1370 | 1.43 | |||
| 2012 | 넥센 | 2.13 | 9 | 0 | 1 | 0 | 0 | 12.0 | 0 | 0 | 4 | 5 | 1.92 |
| 2011 | 넥센 | 3.39 | 18 | 1 | 2 | 0 | 0 | 69.0 | 0 | 0 | 22 | 37 | 1.26 |
| 2010 | 넥센 | 13.50 | 1 | 0 | 1 | 0 | 0 | 3.0 | 0 | 0 | 3 | 4 | 4.00 |
| 2009 | 히어로즈 | 6.67 | 25 | 6 | 11 | 0 | 0 | 117.0 | 0 | 0 | 53 | 66 | 1.67 |
| 2008 | 우리 | 3.88 | 26 | 3 | 6 | 0 | 0 | 106.0 | 0 | 0 | 42 | 63 | 1.43 |
| 2007 | 현대 | 3.88 | 30 | 12 | 7 | 0 | 0 | 176.0 | 0 | 0 | 61 | 127 | 1.31 |
| 2006 | 현대 | 3.78 | 17 | 4 | 7 | 0 | 0 | 85.0 | 0 | 0 | 36 | 64 | 1.55 |
| 2005 | 현대 | 5.76 | 17 | 7 | 7 | 0 | 0 | 90.0 | 0 | 0 | 39 | 70 | 1.61 |
| 2004 | 현대 | 4.01 | 26 | 11 | 8 | 0 | 0 | 152.0 | 0 | 0 | 62 | 100 | 1.40 |
| 2003 | 현대 | 4.63 | 29 | 10 | 9 | 0 | 0 | 167.0 | 0 | 0 | 70 | 121 | 1.52 |
| 2002 | 현대 | 4.88 | 27 | 12 | 10 | 0 | 0 | 151.0 | 0 | 0 | 58 | 130 | 1.41 |
| 2001 | 현대 | 5.20 | 20 | 6 | 6 | 0 | 0 | 97.0 | 0 | 0 | 50 | 59 | 1.56 |
| 2000 | 현대 | 3.74 | 29 | 18 | 8 | 0 | 0 | 195.0 | 0 | 0 | 91 | 172 | 1.32 |
| 1999 | 현대 | 4.14 | 40 | 10 | 11 | 1 | 0 | 184.0 | 0 | 0 | 109 | 184 | 1.57 |
| 1998 | 현대 | 2.76 | 32 | 12 | 4 | 2 | 0 | 160.0 | 0 | 0 | 68 | 168 | 1.13 |
| Category | Stats | KBO Rank | Team Rank |
|---|---|---|---|
| G | 346 | - | - |
| ERA | 4.29 | - | - |
| IP | 1769.0 | - | - |
| W | 112 | - | - |
| L | 98 | - | - |
| SV | 3 | - | - |
| HLD | 0 | - | - |
| SO | 1,370 | - | - |
| H | 0 | - | - |
| HR | 0 | - | - |
| BB | 768 | - | - |
| R | 923 | - | - |
| ER | 844 | - | - |
| HBP | 47 | - | - |
| WHIP | 1.43 | - | - |
Yagoonara