| Slovenia Open Quals | 2023/05/17 16:45 | Kai Niederhuber v Yaro Van Delsen | L | 1-2 |
| Slovenia Open Quals | 2023/05/17 09:10 | Kai Niederhuber v Adarsh Palani Kumar | W | 2-0 |
| Luxembourg Open Qual | 2023/05/04 12:50 | Kai Niederhuber v Bruno Carvalho | L | 0-2 |
| Luxembourg Open Qual | 2023/05/04 10:30 | Ramnish Kumar v Kai Niederhuber | W | 0-2 |
| Polish Open Qual | 2023/03/22 16:00 | Matthias Kicklitz v Kai Niederhuber | L | 2-0 |
| Polish Open Qual | 2023/03/22 08:00 | Daniel Dvorak v Kai Niederhuber | W | 0-2 |
| Slovenia Future Series Qual | 2022/11/24 12:40 | Kai Niederhuber v Paul Tournefier | L | 0-2 |
| Hungarian Int. | 2022/11/03 13:20 | Chun-Yi Lin v Kai Niederhuber | L | 2-0 |
| Slovenia Open Quals | 2023/05/18 07:40 | Yu Hsien Lin v Jia Jie Tan | L | 2-0 |
| Slovenia Open Quals | 2023/05/17 16:20 | Jia Jie Tan v B.R. Sankeerth | W | 2-1 |
| Slovenia Open Quals | 2023/05/17 08:20 | Jia Jie Tan v Carl Claesson | W | 2-0 |
| Swedish Open Qual | 2023/05/11 07:40 | Jia Jie Tan v Iikka Heino | L | 0-2 |
| Luxembourg Open | 2023/05/05 14:20 | Jia Jie Tan v Panji Ahmad Maulana | L | 0-2 |
| Luxembourg Open | 2023/05/05 10:40 | Subhankar Dey v Jia Jie Tan | W | 1-2 |
| Thailand Int. | 2023/03/07 15:20 | Alvi Wijaya Chairullah v Jia Jie Tan | L | 2-0 |
| Thailand Int. Qual | 2023/03/07 01:30 | Jia Jie Tan v Kai Chen Teoh | W | 2-0 |