
| Season | Team | ERA | G | W | L | SV | HLD | IP | H | HR | BB | SO | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Career | 13 Seasons | 3.94 | 428 | 75 | 69 | 41 | 23 | 1127.0 | 583 | 976 | 1.42 | ||
| 2015 | NC | 36.00 | 1 | 0 | 1 | 0 | 0 | 1.0 | 0 | 0 | 1 | 1 | 4.00 |
| 2013 | NC | 9.64 | 12 | 0 | 1 | 0 | 0 | 9.0 | 0 | 0 | 7 | 5 | 2.22 |
| 2012 | 롯데 | 3.70 | 41 | 2 | 3 | 0 | 1 | 48.0 | 0 | 0 | 35 | 27 | 1.56 |
| 2011 | SK | 3.50 | 51 | 6 | 3 | 2 | 2 | 64.0 | 0 | 0 | 47 | 50 | 1.48 |
| 2010 | SK | 4.22 | 65 | 6 | 4 | 20 | 5 | 89.0 | 0 | 0 | 51 | 96 | 1.48 |
| 2009 | SK | 4.42 | 68 | 7 | 5 | 6 | 7 | 106.0 | 0 | 0 | 56 | 96 | 1.52 |
| 2008 | SK | 3.57 | 29 | 4 | 1 | 2 | 5 | 35.0 | 0 | 0 | 22 | 28 | 1.43 |
| 2005 | SK | 0.00 | 3 | 0 | 0 | 0 | 0 | 3.0 | 0 | 0 | 2 | 6 | 1.33 |
| 2004 | SK | 3.99 | 31 | 15 | 9 | 0 | 1 | 169.0 | 0 | 0 | 87 | 145 | 1.46 |
| 2003 | SK | 4.08 | 23 | 5 | 4 | 0 | 2 | 97.0 | 0 | 0 | 50 | 81 | 1.42 |
| 2002 | SK | 3.15 | 27 | 6 | 12 | 0 | 0 | 142.0 | 0 | 0 | 40 | 144 | 1.13 |
| 2001 | SK | 3.55 | 35 | 14 | 14 | 2 | 0 | 220.0 | 0 | 0 | 115 | 165 | 1.43 |
| 2000 | SK | 4.51 | 42 | 10 | 12 | 9 | 0 | 139.0 | 0 | 0 | 70 | 132 | 1.44 |
| Category | Stats | KBO Rank | Team Rank |
|---|---|---|---|
| G | 428 | - | - |
| ERA | 3.94 | - | - |
| IP | 1127.0 | - | - |
| W | 75 | - | - |
| L | 69 | - | - |
| SV | 41 | - | - |
| HLD | 23 | - | - |
| SO | 976 | - | - |
| H | 0 | - | - |
| HR | 0 | - | - |
| BB | 583 | - | - |
| R | 544 | - | - |
| ER | 493 | - | - |
| HBP | 53 | - | - |
| WHIP | 1.42 | - | - |