| K League 1 2021 Championship - Appearances as Referee |  |
 |
 |
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| 21/11/2021 | Suwon FC | - | Jeonbuk FC | 3:2 | 3 | - | - |
| 05/12/2021 | Ulsan Hyundai FC | - | Daegu FC | 2:0 | 2 | 1 | - |
| K League 1 2021 Championship - Appearances as Referee | |
|
|
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| 21/11/2021 | Suwon FC | - | Jeonbuk FC | 3:2 | 3 | - | - |
| 05/12/2021 | Ulsan Hyundai FC | - | Daegu FC | 2:0 | 2 | 1 | - |
| Complete name: | Hyung-jin Ko |
| Born: | |
| Place of birth: |
South Korea |
| Nationality: |
South Korea |