| Season | Age | Team | G | GS | IP | K/9 | BB/9 | HR/9 | BABIP | ERA | FIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 36 | Hanwha Eagles | 34 | 0 | 40.1 | 6.7 | 3.6 | 1.3 | 0.320 | 5.80 | 5.33 | -0.07 |
| 2019 | 35 | Hanwha Eagles | 67 | 0 | 62.0 | 7.0 | 1.9 | 0.7 | 0.377 | 3.92 | 3.63 | 0.59 |
| 2018 | 34 | Hanwha Eagles | 53 | 1 | 66.0 | 6.5 | 2.0 | 1.6 | 0.336 | 5.73 | 5.54 | 0.01 |
| 2017 | 33 | Hanwha Eagles | 25 | 16 | 87.2 | 5.5 | 2.9 | 1.1 | 0.361 | 5.75 | 5.21 | 0.67 |
| 2016 | 32 | Hanwha Eagles | 2 | 1 | 2.2 | 3.4 | 13.5 | 0.0 | 0.529 | 20.25 | 7.49 | -0.04 |
| 2015 | 31 | Hanwha Eagles | 35 | 27 | 125.1 | 5.9 | 4.3 | 1.1 | 0.306 | 5.10 | 5.50 | 0.64 |
| 2014 | 30 | Hanwha Eagles | 48 | 6 | 97.2 | 5.9 | 3.3 | 0.7 | 0.326 | 4.52 | 5.03 | 0.64 |
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