| Latvia Int. | 2021/08/27 11:20 | Joel Koenig v Joonas Korhonen | L | 0-2 |
| Denmark Masters Qual | 2021/08/05 07:00 | Joel Koenig v Soren Hald | L | 0-2 |
| Lithuanian Int. | 2021/06/11 10:20 | Joel Koenig v Thomas Fourcade | L | 0-2 |
| Austrian Open | 2021/05/28 14:55 | Joel Koenig v Jan Louda | L | 0-2 |
| Slovenia Int. | 2021/05/20 08:40 | Milan Ludik v Joel Koenig | L | 2-0 |
| Portuguese Int. Qual | 2021/05/06 12:40 | Magnus Johannesen v Joel Koenig | L | 2-0 |
| Polish Open Qual | 2021/03/25 18:40 | Carlos Piris v Joel Koenig | L | 2-0 |
| Polish Open Qual | 2021/03/25 14:15 | Joan Monroy v Joel Koenig | W | 0-2 |
| Bulgarian Int Qual | 2021/10/07 15:00 | Oleksandar Shmundyak v Maxim Grinblat | W | 2-0 |
| Polish Int. Qual | 2021/09/24 07:00 | Oleksandar Shmundyak v Mateusz Danielak | L | 1-2 |
| Polish Int. Qual | 2021/09/23 17:20 | Gregor Alic v Oleksandar Shmundyak | W | 0-2 |
| Polish Int. Qual | 2021/09/23 14:00 | Oleksandar Shmundyak v Dawid Perkowski | W | 2-0 |
| Ukraine Int. | 2021/09/08 11:05 | Oleksandar Shmundyak v Meiraba Luwang Maisnam | L | 0-2 |
| Ukraine Int. | 2021/09/07 17:00 | Oleksandar Shmundyak v Joachim Persson | W | 2-0 |
| Latvia Int. Qual | 2021/08/26 13:00 | Oleksandar Shmundyak v Shun Yang Lee | L | 0-2 |
| Lithuanian Int. | 2021/06/11 10:30 | Oleksandar Shmundyak v Enogat Roy | L | 0-2 |