| UTR Pro Tennis Series Beograd | 2021/07/06 12:00 | Dusan Obradovic v Constant De La Bassetiere | 6-1,3-6,5-2 |
| UTR Pro Tennis Series Beograd | 2021/07/05 07:30 | Nikola Slavic v Dusan Obradovic | 6-7,6-7 |
| ITF M25 Belgrade | 2021/06/29 07:00 | Jaimee Floyd Angele v Dusan Obradovic | 6-2,7-6 |
| ITF M25 Belgrade | 2021/06/28 07:00 | Dusan Obradovic v Luka Pavlovic | 6-4,3-6,10-4 |
| ITF M25 Belgrade | 2021/06/27 09:00 | Dusan Obradovic v Marat Sharipov | 6-3,6-1 |
| ITF M15 Brcko | 2021/05/21 10:10 | Dusan Obradovic v Viktor Jovic | 2-6,1-6 |
| ITF M15 Brcko | 2021/05/18 12:00 | Stefan Micov v Dusan Obradovic | 1-6,4-6 |
| ITF M15 Brcko | 2021/05/18 07:00 | Milos Vukovic v Dusan Obradovic | 4-6,0-6 |
| UTR Pro Tennis Series Beograd | 2021/07/05 07:30 | Michalis Sakellaridis v Olexiy Kolisnyk | 3-5 |
| ITF M15 Antalya | 2021/06/30 08:50 | Olexiy Kolisnyk v Louroi Martinez | 6-2,2-6,1-6 |
| ITF M15 Antalya | 2021/06/29 06:30 | Olexiy Kolisnyk v Lorenzo Joaquin Rodriguez | 6-2,6-1 |
| ITF M15 Antalya | 2021/06/28 07:55 | Ray Ho v Olexiy Kolisnyk | 6-3,2-6,9-11 |
| ITF M15 Antalya | 2021/06/27 06:30 | Alessandro Ragazzi v Olexiy Kolisnyk | 6-7,3-6 |
| ITF M15 Antalya | 2021/06/25 07:00 | Olexiy Kolisnyk v Fabian Marozsan | 2-6,3-6 |
| ITF M15 Antalya | 2021/06/24 07:00 | Olexiy Kolisnyk v Marsel Ilhan | 6-2,6-3 |
| ITF M15 Antalya | 2021/06/22 09:25 | Olexiy Kolisnyk v Mert Naci Turker | 7-5,4-6,10-5 |