| Dutch Open | 2023/10/12 10:20 | Kai Schaefer v Gregoire Deschamp | W | 2-1 |
| Scottish Open | 2023/10/06 14:40 | Collins Valentine Filimon v Kai Schaefer | L | 2-1 |
| Scottish Open | 2023/10/06 09:20 | Bernardo Atilano v Kai Schaefer | W | 0-2 |
| Belgian International | 2023/09/14 11:15 | Kai Schaefer v Louis Ducrot | L | 1-2 |
| Australian Open | 2023/08/02 02:25 | Su Li Yang v Kai Schaefer | L | 2-0 |
| Australian Open - Qualifikation | 2023/08/01 01:25 | Kai Schaefer v Korakrit Laotrakul | W | 2-1 |
| Australian Open - Qualifikation | 2023/07/31 23:30 | Kai Schaefer v Ytharth Madaan | W | 2-0 |
| US Open | 2023/07/12 19:10 | Kai Schaefer v Koo Takahashi | L | 0-2 |
| Dutch Open | 2023/10/12 12:35 | Rohan Midha v Karan Rajan Rajarajan | W | 1-2 |
| Belgian International | 2023/09/14 08:40 | Christopher Vittoriani v Karan Rajan Rajarajan | L | 2-1 |
| Nantes Int. - Qualifikation | 2023/06/15 17:55 | Chong King Lim v Karan Rajan Rajarajan | L | 2-0 |
| Nantes Int. - Qualifikation | 2023/06/15 08:40 | B.R. Sankeerth v Karan Rajan Rajarajan | W | 0-2 |
| Nantes Int. - Qualifikation | 2023/06/15 07:00 | Dimitar Yanakiev v Karan Rajan Rajarajan | W | 1-2 |
| Dänemark - Denmark Masters - Qualifikation | 2023/06/08 08:00 | Po-Wei Wang v Karan Rajan Rajarajan | L | 2-0 |
| Austrian Open | 2023/05/27 10:40 | Karan Rajan Rajarajan v Julien Carraggi | L | 0-2 |
| Austrian Open | 2023/05/27 08:40 | Karan Rajan Rajarajan v Kuan Lin Kuo | W | 2-0 |