| Season | Age | Team | G | GS | IP | K/9 | BB/9 | HR/9 | BABIP | ERA | FIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 37 | Lotte Giants | 16 | 0 | 11.1 | 4.8 | 7.1 | 1.6 | 0.237 | 7.15 | 7.70 | -0.26 |
| 2019 | 36 | Lotte Giants | 75 | 0 | 62.1 | 10.4 | 5.2 | 0.9 | 0.331 | 4.76 | 4.17 | 0.31 |
| 2018 | 35 | Lotte Giants | 43 | 0 | 32.1 | 10.9 | 6.4 | 0.8 | 0.341 | 6.96 | 4.70 | 0.31 |
| 2017 | 34 | Kia Tigers | 40 | 1 | 40.0 | 7.9 | 5.0 | 0.2 | 0.350 | 4.28 | 4.28 | 0.40 |
| 2016 | 33 | Kia Tigers | 24 | 6 | 46.0 | 10.2 | 5.7 | 1.2 | 0.364 | 6.07 | 5.20 | 0.23 |
| 2015 | 32 | SK Wyverns | 30 | 2 | 51.0 | 7.6 | 5.5 | 1.4 | 0.331 | 6.18 | 5.96 | -0.26 |
| 2014 | 31 | SK Wyverns | 21 | 8 | 51.0 | 7.1 | 6.7 | 1.9 | 0.354 | 9.18 | 7.53 | -0.63 |
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