| Polish Open Qual | 2021/03/25 15:35 | Aryamann Tandon v Nicolas A. Mueller | L | 2-0 |
| European Team Championships | 2020/02/13 10:00 | Hans-Kristian Vittinghus v Nicolas A. Mueller | L | 2-0 |
| Slovenia Future Series Qual | 2019/11/21 15:05 | Hannes Gerberich v Nicolas A. Mueller | L | 2-0 |
| Slovenia Future Series Qual | 2019/11/21 08:25 | Oguzhan Mehmet Celik v Nicolas A. Mueller | - | away |
| Slovenia Future Series Qual | 2019/11/21 08:00 | Nicolas A. Mueller v Rajat Rathore | L | 0-2 |
| Hungarian Int. Qual | 2019/10/30 12:20 | Nicolas A. Mueller v Andy Tsai | L | 0-2 |
| Cyprus Int. | 2019/10/11 09:20 | Nicolas A. Mueller v Julien Carraggi | L | 0-2 |
| Cyprus Int. Qual | 2019/10/10 13:30 | Orestis Pissis v Nicolas A. Mueller | W | 0-2 |