| Swedish Open Qual | 2023/05/11 16:55 | Filip Karlborg v Xiaodong Sheng | L | 0-2 |
| Swedish Open Qual | 2023/05/11 11:40 | Filip Karlborg v Marcus Viscovich | W | 2-0 |
| Luxembourg Open Qual | 2023/05/04 08:40 | Kian-Yu Oei v Filip Karlborg | L | 2-0 |
| Dutch Int. Qual | 2023/04/13 09:30 | Filip Karlborg v Magnus Klinggaard | L | 1-2 |
| Polish Open Qual | 2023/03/23 10:20 | Joakim Oldorff v Filip Karlborg | L | 2-0 |
| Polish Open Qual | 2023/03/22 16:45 | Filip Karlborg v Armin Sarosi | W | 2-0 |
| Portugal Int. Qual | 2023/03/08 13:00 | Filip Karlborg v Simon Baron-Vezilier | L | 0-2 |
| Estonian Int. Qual | 2023/01/12 11:30 | Johan Azelius v Filip Karlborg | L | 2-0 |
| European Games | 2023/06/28 13:00 | Nhat Nguyen v Mark Caljouw | W | 0-2 |
| Nantes Int. | 2023/06/17 07:40 | Arnaud Merkle v Mark Caljouw | L | 2-0 |
| Nantes Int. | 2023/06/16 13:00 | Uriel F C Artiga v Mark Caljouw | W | 0-2 |
| Nantes Int. | 2023/06/16 09:00 | Prahdiska B Shujiwo v Mark Caljouw | W | 0-2 |
| Denmark Masters | 2023/06/11 08:20 | Mark Caljouw v Yu Kai Huang | L | 0-2 |
| Denmark Masters | 2023/06/10 14:40 | Po-Wei Wang v Mark Caljouw | W | 1-2 |
| Denmark Masters | 2023/06/10 08:40 | Mark Caljouw v Arnaud Merkle | W | 2-0 |
| Denmark Masters | 2023/06/09 16:20 | Mark Caljouw v Luka Wraber | W | 2-0 |