| Lithuanian International - Qualifikation | 2023/06/08 10:05 | Danielius Berzanskis v Justin Seibel | W | 1-2 |
| Bonn Int. - Qualifikation | 2023/05/31 09:55 | Justin Seibel v Yaro Van Delsen | L | 0-2 |
| Dutch International - Qualifikation | 2023/04/13 11:10 | Justin Seibel v Andi Fadel Muhammad | L | 0-2 |
| Iceland International - Qualifikation | 2023/01/26 10:00 | Soen Rimmer v Justin Seibel | L | 2-1 |
| Slowenien - Future Series - Qualifikation | 2022/11/24 13:35 | Shun Saito v Justin Seibel | L | 2-0 |
| Czech Open - Qualifikation | 2022/10/20 16:20 | Justin Seibel v Julien Scheiwiller | L | 0-2 |
| Czech Open - Qualifikation | 2022/10/20 11:05 | Justin Seibel v Michael Schausberger | W | 2-0 |
| Bulgarian International - Qualifikation | 2022/10/06 13:25 | Charles Fouyn v Justin Seibel | L | 2-0 |
| Lithuanian International - Qualifikation | 2023/06/08 10:00 | Moritz Unz v Yohan Barbieri | W | 0-2 |
| Bonn Int. | 2023/06/02 07:40 | Yu Kai Huang v Yohan Barbieri | L | 2-0 |
| Bonn Int. | 2023/06/01 17:40 | Yohan Barbieri v Paul Tournefier | W | 2-0 |
| Bonn Int. | 2023/06/01 13:20 | Aaron Sonnenschein v Yohan Barbieri | W | 1-2 |
| Bonn Int. - Qualifikation | 2023/06/01 07:30 | Yohan Barbieri v Paul Tournefier | W | 2-0 |
| Bonn Int. - Qualifikation | 2023/05/31 16:00 | Yohan Barbieri v Chen Xun Zhao | W | 2-0 |
| Bonn Int. - Qualifikation | 2023/05/31 10:30 | Bruno Carvalho v Yohan Barbieri | W | 1-2 |
| Swedish Open - Qualifikation | 2023/05/11 09:20 | Daniil Dubovenko v Yohan Barbieri | L | 2-0 |