| K League 1 2023 Relegation - Appearances as Assistant | ||||
| 29/10/2023 | Suwon Bluewings | - | Daejeon Hana Citizen | 2:2 |
| 02/12/2023 | Suwon Bluewings | - | Gangwon FC | 0:0 |
| K League 1 2023 Relegation - Appearances as Assistant | ||||
| 29/10/2023 | Suwon Bluewings | - | Daejeon Hana Citizen | 2:2 |
| 02/12/2023 | Suwon Bluewings | - | Gangwon FC | 0:0 |
| Complete name: | Jae-yeol Yoon |
| Born: | 25/12/1976 |
| Place of birth: |
South Korea |
| Nationality: |
South Korea |