Stadium: Court 2 Round: 25 Ground: Clay
| Challenger Istanbul | 2021/09/17 09:35 | Tung-Lin Wu v Aldin Setkic | 6-3,6-2 |
| Challenger Istanbul | 2021/09/16 10:25 | Aldin Setkic v Radu Albot | 4-6,6-3,7-5 |
| Challenger Istanbul | 2021/09/14 12:40 | Aldin Setkic v Victor Vlad Cornea | 6-4,6-2 |
| Challenger Istanbul | 2021/09/13 09:00 | Aldin Setkic v Elmar Ejupovic | 7-6,6-7,6-3 |
| Challenger Istanbul | 2021/09/12 11:30 | Kaichi Uchida v Aldin Setkic | 4-6,3-6 |
| Challenger Banja Luka | 2021/09/06 09:00 | Aldin Setkic v Martin Cuevas | 6-7,6-2,3-6 |
| Challenger Banja Luka | 2021/09/05 09:00 | Aldin Setkic v Marco Bortolotti | 7-5,6-4 |
| Challenger Warsaw | 2021/08/23 09:00 | Jan Zielinski v Aldin Setkic | 1-6,6-2,7-5 |
| ITF M15 Zlatibor | 2021/09/15 11:30 | Gergely Madarasz v Viktor Jovic | 6-2,6-4 |
| ITF M15 Ulcinj | 2021/08/30 07:30 | Viktor Jovic v Leonardo Catani | 6-4,6-4 |
| ITF M15 Novi Sad | 2021/08/04 11:20 | Viktor Jovic v Peter Fajta | 4-6,6-7 |
| ITF M15 Novi Sad | 2021/07/27 12:30 | Dragos Nicolae Madaras v Viktor Jovic | 6-1,6-1 |
| ITF M15 Doboj | 2021/07/15 10:15 | Gergely Madarasz v Viktor Jovic | 6-4,6-3 |
| ITF M15 Doboj | 2021/07/14 11:20 | Stevan Popovic v Viktor Jovic | 4-6,2-6 |
| ITF M15 Doboj | 2021/07/13 09:45 | Viktor Jovic v Nemanja Malesevic | 0-6,6-4,10-8 |
| ITF M15 Doboj | 2021/07/12 08:00 | Viktor Jovic v Ali Habib | 6-2,0-6,10-8 |