| Bonn Int. Qual | 2022/06/15 09:00 | Klauer, Christopher v Michal Walentek | L | 2-0 |
| Czech Open Qual | 2021/10/21 10:15 | Valentin Singer v Michal Walentek | L | 2-0 |
| 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 |