| Season | Age | Team | G | GS | IP | K/9 | BB/9 | HR/9 | BABIP | ERA | FIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 32 | Kia Tigers | 28 | 28 | 154.0 | 8.1 | 3.4 | 0.6 | 0.325 | 4.56 | 3.89 | 3.47 |
| 2019 | 31 | Kia Tigers | 29 | 29 | 184.2 | 7.9 | 1.6 | 0.3 | 0.302 | 2.29 | 2.58 | 5.97 |
| 2018 | 30 | Kia Tigers | 29 | 29 | 184.1 | 7.4 | 2.1 | 1.0 | 0.322 | 4.15 | 4.33 | 3.92 |
| 2017 | 29 | Kia Tigers | 31 | 31 | 193.1 | 7.4 | 2.1 | 0.8 | 0.327 | 3.44 | 3.88 | 4.69 |
| 2016 | 28 | Kia Tigers | 31 | 31 | 200.1 | 6.6 | 3.5 | 0.9 | 0.284 | 3.68 | 4.70 | 3.49 |
| 2015 | 27 | Kia Tigers | 32 | 31 | 184.1 | 7.7 | 3.8 | 0.9 | 0.266 | 2.44 | 4.50 | 3.00 |
| 2014 | 26 | Kia Tigers | 29 | 28 | 171.1 | 8.7 | 4.0 | 0.6 | 0.317 | 4.25 | 4.17 | 3.92 |
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