| Season | Age | Team | G | GS | IP | K/9 | BB/9 | HR/9 | BABIP | ERA | FIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 34 | KT Wiz | 54 | 0 | 57.2 | 5.6 | 3.4 | 1.1 | 0.213 | 3.28 | 5.07 | 0.07 |
| 2019 | 33 | NC Dinos | 15 | 1 | 20.2 | 6.1 | 3.9 | 0.9 | 0.284 | 5.23 | 4.71 | -0.02 |
| 2018 | 32 | NC Dinos | 41 | 0 | 47.1 | 5.7 | 3.2 | 1.0 | 0.347 | 6.46 | 5.27 | 0.16 |
| 2017 | 31 | LG Twins | 6 | 0 | 7.1 | 1.2 | 4.9 | 0.0 | 0.286 | 6.14 | 5.86 | -0.07 |
| 2016 | 30 | LG Twins | 19 | 0 | 24.0 | 5.6 | 4.9 | 1.1 | 0.346 | 6.38 | 5.99 | -0.21 |
| 2015 | 29 | LG Twins | 25 | 0 | 37.0 | 5.4 | 2.9 | 1.5 | 0.317 | 5.59 | 5.61 | -0.30 |
| 2014 | 28 | LG Twins | 66 | 0 | 68.0 | 6.5 | 3.0 | 0.8 | 0.293 | 4.37 | 4.58 | 0.42 |
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