| Season | Age | Team | G | GS | IP | K/9 | BB/9 | HR/9 | BABIP | ERA | FIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 29 | Samsung Lions | 59 | 0 | 50.1 | 8.6 | 4.1 | 2.0 | 0.244 | 3.58 | 5.85 | -0.15 |
| 2019 | 28 | Samsung Lions | 34 | 0 | 37.0 | 7.5 | 2.7 | 0.5 | 0.255 | 1.95 | 3.35 | 0.57 |
| 2018 | 27 | Samsung Lions | 19 | 0 | 17.0 | 7.4 | 3.7 | 2.1 | 0.345 | 7.94 | 6.77 | -0.12 |
| 2017 | 26 | Samsung Lions | 30 | 0 | 31.2 | 7.1 | 6.3 | 2.6 | 0.273 | 5.12 | 7.97 | -0.64 |
| 2016 | 25 | LG Twins | 38 | 0 | 41.0 | 6.4 | 5.0 | 1.1 | 0.318 | 5.49 | 5.89 | -0.31 |
| 2015 | 24 | LG Twins | 15 | 0 | 15.1 | 12.3 | 5.9 | 0.6 | 0.342 | 5.87 | 3.81 | 0.17 |
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