
| Season | Team | ERA | G | W | L | SV | HLD | IP | H | HR | BB | SO | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Career | 20 Seasons | 4.71 | 638 | 89 | 101 | 13 | 121 | 1470.0 | 1497 | 151 | 645 | 1064 | 1.46 |
| 2025 | SSG | 2.14 | 77 | 3 | 6 | 3 | 35 | 80.0 | 60 | 2 | 25 | 68 | 1.06 |
| 2024 | SSG | 2.90 | 77 | 8 | 5 | 0 | 38 | 83.0 | 71 | 10 | 32 | 71 | 1.24 |
| 2023 | SSG | 3.58 | 76 | 9 | 5 | 2 | 30 | 83.0 | 78 | 4 | 36 | 65 | 1.37 |
| 2022 | SSG | 3.05 | 41 | 12 | 5 | 1 | 7 | 79.0 | 69 | 5 | 23 | 55 | 1.16 |
| 2021 | 롯데 | 7.35 | 14 | 3 | 5 | 0 | 0 | 56.0 | 79 | 11 | 24 | 35 | 1.84 |
| 2020 | 롯데 | 4.87 | 25 | 5 | 10 | 0 | 0 | 133.0 | 139 | 19 | 40 | 77 | 1.35 |
| 2018 | 롯데 | 4.08 | 33 | 9 | 6 | 0 | 0 | 132.0 | 127 | 18 | 30 | 89 | 1.19 |
| 2017 | 롯데 | 11.66 | 9 | 0 | 2 | 0 | 0 | 14.0 | 25 | 4 | 8 | 8 | 2.36 |
| 2016 | 롯데 | 6.85 | 22 | 3 | 12 | 0 | 0 | 94.0 | 128 | 13 | 48 | 52 | 1.87 |
| 2015 | 두산 | 4.47 | 47 | 1 | 4 | 4 | 0 | 58.0 | 57 | 6 | 37 | 41 | 1.62 |
| 2014 | 두산 | 9.03 | 29 | 3 | 15 | 0 | 0 | 109.0 | 147 | 14 | 69 | 74 | 1.98 |
| 2013 | 두산 | 3.84 | 30 | 10 | 10 | 0 | 0 | 180.0 | 171 | 16 | 75 | 153 | 1.37 |
| 2012 | 두산 | 2.53 | 42 | 12 | 6 | 0 | 7 | 146.0 | 106 | 6 | 69 | 133 | 1.20 |
| 2011 | 두산 | 5.17 | 44 | 5 | 2 | 3 | 3 | 62.0 | 71 | 3 | 36 | 53 | 1.73 |
| 2010 | 두산 | 13.50 | 6 | 0 | 0 | 0 | 0 | 9.0 | 17 | 1 | 1 | 8 | 2.00 |
| 2009 | 두산 | 4.50 | 9 | 0 | 2 | 0 | 0 | 24.0 | 18 | 4 | 19 | 11 | 1.54 |
| 2008 | 두산 | 6.23 | 3 | 0 | 1 | 0 | 0 | 8.0 | 12 | 0 | 5 | 7 | 2.13 |
| 2007 | 두산 | 4.67 | 29 | 1 | 2 | 0 | 1 | 44.0 | 45 | 2 | 25 | 21 | 1.59 |
| 2004 | 두산 | 6.89 | 20 | 2 | 2 | 0 | 0 | 49.0 | 65 | 11 | 31 | 35 | 1.96 |
| 2003 | 두산 | 4.12 | 5 | 3 | 1 | 0 | 0 | 19.0 | 12 | 2 | 12 | 8 | 1.26 |
| Category | Stats | KBO Rank | Team Rank |
|---|---|---|---|
| G | 638 | - | - |
| ERA | 4.71 | - | - |
| IP | 1470.0 | - | - |
| W | 89 | - | - |
| L | 101 | - | - |
| SV | 13 | - | - |
| HLD | 121 | - | - |
| SO | 1,064 | - | - |
| H | 1,497 | - | - |
| HR | 151 | - | - |
| BB | 645 | - | - |
| R | 836 | - | - |
| ER | 770 | - | - |
| HBP | 65 | - | - |
| WHIP | 1.46 | - | - |