| Nouvelle Aquitane Future Series | 2023/07/08 00:50 | Bruno Carvalho v Koenig, Joel | L | 2-1 |
| Nouvelle Aquitane Future Series | 2023/07/07 14:00 | Neil Bhabuta v Koenig, Joel | W | 0-2 |
| Nouvelle Aquitane Future Series | 2023/07/07 08:20 | Paul Tournefier v Koenig, Joel | W | 0-2 |
| Bonn Int. | 2023/06/01 12:00 | Koenig, Joel v Kho Wibowo, H. | L | 0-2 |
| Open de Suède | 2023/05/12 10:10 | Koenig, Joel v Burestedt, Felix | L | 1-2 |
| Luxembourg Open | 2023/05/05 11:40 | Simon Baron-Vezilier v Koenig, Joel | L | 2-1 |
| Dutch Int. - | 2023/04/14 15:00 | Koenig, Joel v Joran Kweekel | L | 0-2 |
| Dutch Int. - | 2023/04/14 10:20 | Koenig, Joel v Dennis Koppen | W | 2-0 |
| Scottish Open | 2023/10/06 08:20 | Christensen, Jeppe Bruun v Joakim Oldorff | L | 0-2 |
| Scottish Open Qual | 2023/10/05 13:50 | Christensen, Jeppe Bruun v Filip Karlborg | W | 2-0 |
| Scottish Open Qual | 2023/10/05 10:55 | Christensen, Jeppe Bruun v Muhammad Ammar Masood | W | 2-0 |
| Belgian International 2019, MS | 2023/09/14 11:40 | Christensen, Jeppe Bruun v Collins Valentine Filimon | L | 1-2 |
| Belgian Int. Qual | 2023/09/13 13:35 | Christensen, Jeppe Bruun v Charles Fouyn | W | 2-0 |
| Belgian Int. Qual | 2023/09/13 11:40 | Arnaud Delsaut v Christensen, Jeppe Bruun | W | 0-2 |
| Slovenia Future Series | 2023/09/09 07:20 | Jakob Houe v Christensen, Jeppe Bruun | L | 2-0 |
| Slovenia Future Series | 2023/09/08 15:45 | Christensen, Jeppe Bruun v Maxim Grinblat | W | 2-0 |