| Croatia Int. - kvalifikácia | 2022/09/29 10:10 | Yaro Van Delsen v Kai Niederhuber | L | 2-1 |
| Slovenia Open - kvalifikácia | 2023/05/17 09:10 | Kai Niederhuber v Adarsh Palani Kumar | W | 2-0 |
| Luxembourg Open - kval. | 2023/05/04 12:50 | Kai Niederhuber v Bruno Carvalho | L | 0-2 |
| Luxembourg Open - kval. | 2023/05/04 10:30 | Ramnish Kumar v Kai Niederhuber | W | 0-2 |
| Polish Open - kvalifikácia | 2023/03/22 16:00 | Matthias Kicklitz v Kai Niederhuber | L | 2-0 |
| Polish Open - kvalifikácia | 2023/03/22 08:00 | Daniel Dvorak v Kai Niederhuber | W | 0-2 |
| Slovinsko - Future Series - kval. | 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 |
| Hungarian Int. - kvalifikácia | 2022/11/03 08:35 | Sebastian Lassen Nielsen v Kai Niederhuber | W | 0-2 |
| Luxembourg Open - kval. | 2023/05/04 14:20 | Yaro Van Delsen v Yu Huang | L | 0-2 |
| Luxembourg Open - kval. | 2023/05/04 08:45 | Camilo Borst v Yaro Van Delsen | W | 1-2 |
| Dutch Int. - kvalifikácia | 2023/04/13 10:35 | Martin Bundgaard v Yaro Van Delsen | L | 2-0 |
| Irish Open - kvalifikácia | 2022/11/16 11:55 | Harry Huang v Yaro Van Delsen | L | 2-0 |
| Czech Open - kval. | 2022/10/20 08:45 | Yaro Van Delsen v Mateusz Danielak | L | 0-2 |
| Dutch Open - kvalifkácia | 2022/10/12 11:40 | Cholan Kayan v Yaro Van Delsen | L | 2-0 |
| Croatia Int. - kvalifikácia | 2022/09/29 18:40 | Mikolaj Szymanowski v Yaro Van Delsen | L | 2-0 |
| Croatia Int. - kvalifikácia | 2022/09/29 12:10 | Yaro Van Delsen v Ivor Zekan | W | 2-0 |