Stadium: Court 2 Round: 25 Ground: Clay
| ITF M25 Grodzisk Mazowiecki | 2021/08/07 07:25 | David Poljak v Dembek, Michal | 6-3,3-6,6-3 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/03 08:55 | Bojarski, Alan v Dembek, Michal | 3-6,6-4,2-6 |
| ITF M25 Telavi | 2021/07/31 08:40 | Dembek, Michal v Alessandro Ingarao | 2-6,1-6 |
| ITF M25 Telavi | 2021/07/30 05:55 | Dembek, Michal v Boborykin, Alexander | 7-5,6-2 |
| Polish National Tour | 2021/07/11 16:00 | Dembek, Michal v Orlikowski, Aleksander | 2-6,6-7 |
| ITF M25 Wroclaw | 2021/07/01 11:40 | Alexander Shevchenko v Dembek, Michal | 6-4,6-2 |
| ITF M25 Wroclaw | 2021/06/30 10:45 | Dembek, Michal v Dougaz, Aziz | 6-2,6-4 |
| ITF - M15 Antalya | 2021/06/16 16:25 | Dembek, Michal v Heyman, Christopher | 0-6,2-6 |