| Hungarian Int. Qual | 2023/11/01 15:20 | Enrico Baroni v Kai Niederhuber | L | 2-0 |
| Hungarian Int. Qual | 2023/11/01 10:55 | Pavel Manasek v Kai Niederhuber | W | 0-2 |
| Czech Open Qual | 2023/10/19 16:45 | Kim Linell v Kai Niederhuber | L | 2-1 |
| Croatian Int. | 2023/09/29 09:55 | Simon Baron-Vezilier v Kai Niederhuber | L | 2-0 |
| Croatia Int. Qual | 2023/09/28 18:30 | Felix Wright v Kai Niederhuber | W | 0-2 |
| Croatia Int. Qual | 2023/09/28 15:10 | Edvin Hadzihalilovic v Kai Niederhuber | W | 0-2 |
| Croatia Int. Qual | 2023/09/28 12:15 | Sebastian Kadlec v Kai Niederhuber | W | 0-2 |
| Polish Int. Qual | 2023/09/21 10:20 | Kai Niederhuber v Arun Kumar Ashok Kumar | W | 2-0 |
| KL Masters Qual | 2023/10/31 05:05 | Garret Tan v Ming Hong Lim | L | 0-2 |
| Indonesian Masters Qual | 2023/10/24 08:25 | Ming Hong Lim v Garret Tan | L | 2-0 |
| Indonesian Masters Qual | 2023/10/24 06:00 | Garret Tan v Mohamad Hafiz Mohamed Sikkander | W | 2-1 |