| Bulgarian Int | 2021/10/08 13:35 | Valentin Singer v Tan, Jia Wei | L | 0-2 |
| Bulgarian Int | 2021/10/08 08:30 | Valentin Singer v Dolman, Adam | W | 2-0 |
| Hellas Int. | 2021/09/03 08:55 | Valentin Singer v Wyman Goh | L | 0-2 |
| Latvia Int. | 2021/08/27 12:30 | Nicolas A. Mueller v Valentin Singer | L | 2-1 |
| Orleans Masters Qual | 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 |
| Open de Suède - Qualif. | 2020/01/16 09:00 | Stensaeth, Peter Roenn v Valentin Singer | W | 0-2 |
| Estonie Int. - Qualif. | 2020/01/09 08:30 | Valentin Singer v Alvaro Vazquez | L | 0-2 |
| Polish Int. Qual | 2021/09/23 11:00 | Gustav Andree v Michal Walentek | L | 2-0 |
| Lithuanian Int. | 2021/06/11 11:30 | Michal Walentek v Savin, Cristian | L | 1-2 |
| Austrian Open - Qualif. | 2021/05/27 10:10 | Kim Kristensen, D. v Michal Walentek | L | 2-0 |
| Open de Pologne - Qualif. | 2021/03/25 12:00 | Dimitar Yanakiev v Michal Walentek | L | 2-0 |
| Open de Slovaquie - Qualif. | 2020/02/26 09:55 | Michal Walentek v Rydstrom, Alexander | L | 1-2 |
| Internationaux d'Islande - Qualif. | 2020/01/23 15:00 | Michal Walentek v Mads Juel Moller | L | 0-2 |
| Internationaux d'Islande - Qualif. | 2020/01/23 09:00 | Michal Walentek v Hardarson, David Orn | W | 2-0 |
| Estonie Int. - Qualif. | 2020/01/09 09:00 | Kilpi, Justus v Michal Walentek | L | 2-0 |