Stadium: COURT 1 Round: 14 Ground: Clay
| ITF M15 Bratislava | 2021/08/19 08:00 | Jonathan Mridha v Peter Fajta | 6-7,5-7 |
| ITF M15 Bratislava | 2021/08/17 10:30 | Jonathan Mridha v Peter Benjamin Privara | 6-3,6-3 |
| ITF M15 Frederiksberg | 2021/08/08 10:00 | Markus Eriksson v Jonathan Mridha | 3-6,6-7 |
| ITF M15 Frederiksberg | 2021/08/07 12:00 | Jonathan Mridha v Benjamin Hannestad | 0-6,6-2,6-4 |
| ITF M15 Frederiksberg | 2021/08/06 09:00 | Jonathan Mridha v Christian Sigsgaard | 6-4,6-4 |
| ITF M15 Frederiksberg | 2021/08/05 13:00 | Jonathan Mridha v Oscar Moraing | 6-1,6-3 |
| ITF M15 Frederiksberg | 2021/08/04 12:05 | Jonathan Mridha v Adrian Oetzbach | 6-2,6-3 |
| ITF M15 Vejle | 2021/07/31 11:00 | Jonathan Mridha v August Holmgren | 6-3,3-6,4-6 |
| ITF M25 Prostějov | 2021/08/17 09:00 | Alex Rybakov v David Poljak | 7-6,7-6 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/08 08:00 | David Poljak v Zsombor Piros | 4-6,6-7 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/07 11:55 | David Poljak v Adam Pavlásek | 4-6,7-6,6-1 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/07 07:25 | David Poljak v Michal Dembek | 6-3,3-6,6-3 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/04 17:10 | David Poljak v Szymon Kielan | 7-5,6-3 |
| Challenger Poznan | 2021/07/27 16:25 | Elmar Ejupovic v David Poljak | 6-2,6-4 |
| Challenger Poznan | 2021/07/26 11:35 | David Poljak v Lucas Gerch | 7-5,1-6,6-4 |
| Challenger Poznan | 2021/07/25 13:25 | Thomaz Bellucci v David Poljak | 6-4,3-6,1-6 |