| Latvia Int. | 2021/08/27 12:30 | Nicolas A. Mueller v Valentin Singer | L | 2-1 |
| Orleans Masters - Calificari | 2021/03/23 09:40 | Yanis Gaudin v Valentin Singer | L | 2-0 |
| Portuguese Int. | 2020/11/06 13:35 | Luis Enrique Penalver v Valentin Singer | L | 2-1 |
| Swedish Open - Calificari | 2020/01/16 09:00 | Peter Roenn Stensaeth v Valentin Singer | W | 0-2 |
| Estonian Int. - Calificari | 2020/01/09 08:30 | Valentin Singer v Alvaro Vazquez | L | 0-2 |
| Slovenia Future Series | 2019/11/22 15:40 | Ondrej Kral v Valentin Singer | L | 2-0 |
| Slovenia Future Series | 2019/11/22 10:00 | Valentin Singer v Cristian Savin | W | 2-0 |
| Cyprus Int. | 2019/10/11 12:50 | Alex Lane v Valentin Singer | L | 2-0 |
| Hellas International - Calificari | 2021/09/01 07:00 | Dimitri Jacquart v Wyman Goh | W | 0-2 |
| Latvia Int. Qual | 2021/08/26 12:30 | Mads Juel Moller v Wyman Goh | L | 2-0 |