| Season | Age | Team | G | GS | IP | K/9 | BB/9 | HR/9 | BABIP | ERA | FIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 33 | Hanwha Eagles | 26 | 26 | 132.2 | 7.8 | 5.0 | 1.0 | 0.317 | 5.02 | 5.14 | 1.34 |
| 2019 | 32 | Lotte Giants | 27 | 27 | 125.1 | 7.8 | 4.2 | 0.9 | 0.348 | 4.95 | 4.30 | 1.71 |
| 2018 | 31 | Lotte Giants | 32 | 0 | 36.2 | 10.8 | 4.7 | 1.2 | 0.330 | 4.66 | 4.94 | 0.27 |
| 2017 | 30 | Lotte Giants | 53 | 0 | 51.1 | 10.0 | 5.4 | 1.1 | 0.331 | 4.38 | 5.02 | 0.24 |
| 2016 | 29 | KT Wiz | 40 | 7 | 75.1 | 8.0 | 5.1 | 0.8 | 0.368 | 6.33 | 5.24 | 0.37 |
| 2015 | 28 | KT Wiz | 47 | 0 | 74.2 | 9.0 | 3.4 | 0.1 | 0.358 | 3.98 | 2.88 | 1.81 |
| 2014 | 27 | Kiwoom Heroes | 6 | 0 | 6.2 | 2.7 | 4.0 | 0.0 | 0.333 | 12.15 | 4.52 | 0.06 |
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