| Thomas Cup | 2021/10/09 17:00 | Heo, Kwang Hee v Max Weisskirchen | W | 2-0 |
| Sudirman Cup | 2021/10/02 07:30 | Shi, Y. Q. v Heo, Kwang Hee | L | 2-1 |
| Sudirman Cup | 2021/10/01 07:30 | Heo, Kwang Hee v Kunlavut Vitidsarn | W | 2-1 |
| Sudirman Cup | 2021/09/30 08:00 | Tien Chen Chou v Heo, Kwang Hee | W | 1-2 |
| Sudirman Cup | 2021/09/26 13:20 | Heo, Kwang Hee v Max Weisskirchen | W | 2-1 |
| Olympics 2020 - Men | 2021/07/31 00:00 | Heo, Kwang Hee v Kevin Cordon | L | 0-2 |
| Olympics 2020 - Men | 2021/07/28 11:00 | Kento Momota v Heo, Kwang Hee | W | 0-2 |
| Olympics 2020 - Men | 2021/07/26 09:40 | Heo, Kwang Hee v Lam, Timothy | W | 2-0 |
| Masters d'Espagne | 2021/05/23 08:30 | Chico Aura Dwi Wardoyo v Toma Junior Popov | W | 0-2 |
| Masters d'Espagne | 2021/05/22 12:30 | Lee, Dong Keun v Toma Junior Popov | W | 0-2 |
| Masters d'Espagne | 2021/05/21 12:40 | Mads Christophersen v Toma Junior Popov | W | 1-2 |
| Masters d'Espagne | 2021/05/20 12:00 | Tze Yong Ng v Toma Junior Popov | W | 0-2 |
| Masters d'Espagne | 2021/05/19 12:40 | Luis Enrique Penalver v Toma Junior Popov | W | 1-2 |
| Championnat d'Europe | 2021/04/29 07:40 | Toma Junior Popov v Kalle Koljonen | L | 0-2 |
| Championnat d'Europe | 2021/04/28 10:20 | Toma Junior Popov v Lane, Alex | W | 2-0 |
| Orléans Masters | 2021/03/28 10:00 | Toma Junior Popov v Mads Christophersen | W | 2-0 |