| Season | Age | Team | G | GS | IP | K/9 | BB/9 | HR/9 | BABIP | ERA | FIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 30 | Samsung Lions | 5 | 0 | 5.1 | 5.1 | 6.8 | 1.7 | 0.235 | 8.44 | 7.68 | -0.10 |
| 2019 | 29 | Samsung Lions | 12 | 2 | 21.2 | 6.2 | 6.2 | 0.4 | 0.315 | 7.06 | 4.92 | 0.02 |
| 2018 | 28 | Samsung Lions | 19 | 0 | 31.0 | 7.8 | 2.6 | 0.9 | 0.295 | 3.48 | 4.45 | 0.43 |
| 2017 | 27 | Samsung Lions | 9 | 7 | 32.0 | 7.6 | 3.9 | 2.5 | 0.352 | 9.84 | 7.33 | -0.20 |
| 2016 | 26 | Samsung Lions | 27 | 23 | 111.0 | 5.7 | 5.0 | 1.5 | 0.318 | 6.81 | 6.60 | 0.35 |
| 2015 | 25 | Samsung Lions | 12 | 4 | 29.1 | 8.9 | 4.9 | 1.5 | 0.385 | 8.28 | 5.63 | 0.10 |
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