| K League 1 2021 Relegation - Appearances as Referee |  |
 |
 |
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| 31/10/2021 | Gwangju FC | - | Gangwon FC | 2:2 | 4 | - | - |
| 03/11/2021 | Seongnam FC | - | Incheon United | 1:1 | 4 | - | - |
| K League 1 2021 Relegation - Appearances as Referee | |
|
|
||||
| 31/10/2021 | Gwangju FC | - | Gangwon FC | 2:2 | 4 | - | - |
| 03/11/2021 | Seongnam FC | - | Incheon United | 1:1 | 4 | - | - |
| Complete name: | Dong-sik Jung |
| Born: | |
| Place of birth: |
South Korea |
| Nationality: |
South Korea |