| K League 1 2020 Championship - Matches comme assistant | ||||
| 27.09.2020 | Pohang Steelers | - | Gwangju FC | 5:3 |
| 18.10.2020 | Jeonbuk FC | - | Gwangju FC | 4:1 |
| 01.11.2020 | Pohang Steelers | - | Sangju Sangmu | 3:1 |
| K League 1 2020 Championship - Matches comme assistant | ||||
| 27.09.2020 | Pohang Steelers | - | Gwangju FC | 5:3 |
| 18.10.2020 | Jeonbuk FC | - | Gwangju FC | 4:1 |
| 01.11.2020 | Pohang Steelers | - | Sangju Sangmu | 3:1 |
| Nom complet: | Eun-seok Gu |
| Né le: | |
| Né à: |
Corée du Sud |
| Nationalité: |
Corée du Sud |