| K League 1 2018 Relegation - Appearances as Assistant | ||||
| 11/11/2018 | Daegu FC | - | Sangju Sangmu | 0:0 |
| 01/12/2018 | Gangwon FC | - | Daegu FC | 0:1 |
| K League 1 2018 Relegation - Appearances as Assistant | ||||
| 11/11/2018 | Daegu FC | - | Sangju Sangmu | 0:0 |
| 01/12/2018 | Gangwon FC | - | Daegu FC | 0:1 |
| Complete name: | Eun-seok Gu |
| Born: | |
| Place of birth: |
South Korea |
| Nationality: |
South Korea |