Stadium: Court 2 Round: 25 Ground: Clay
| ITF M15 Doboj | 2021/07/13 08:00 | Dusan Obradovic v Drazen Petrovic | 6-4,6-4 |
| ITF M15 Doboj | 2021/07/11 12:30 | Dusan Rajic v Dusan Obradovic | 4-6,3-6 |
| UTR Pro Tennis Series Beograd | 2021/07/10 07:00 | Yaraslav Shyla v Dusan Obradovic | 1-6,6-2,6-4 |
| UTR Pro Tennis Series Beograd | 2021/07/09 07:30 | Dusan Obradovic v Michalis Sakellaridis | 6-4,5-4 |
| UTR Pro Tennis Series Beograd | 2021/07/07 10:30 | Dusan Obradovic v Olexiy Kolisnyk | 6-0,5-4 |
| 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 Velenje | 2021/07/07 10:05 | Bor Artnak v Domagoj Biljesko | 6-4,1-6,6-2 |
| ITF M25 Velenje | 2021/07/06 08:00 | Domagoj Biljesko v Nicolas Parizzia | 6-3,7-5 |
| ITF M25 Velenje | 2021/07/05 09:00 | Domagoj Biljesko v Tadija Radovanovic | 6-4,4-6,11-9 |
| ITF M15 Sarajevo | 2021/06/03 10:30 | Domagoj Biljesko v Hernan Casanova | 2-6,3-6 |
| ITF M15 Sarajevo | 2021/06/02 15:55 | Zsombor Velcz v Domagoj Biljesko | 7-6,2-6,5-7 |
| ITF M15 Sarajevo | 2021/06/01 09:00 | Domagoj Biljesko v Michele Vianello | 6-3,6-4 |
| ITF M15 Sarajevo | 2021/05/31 12:00 | Domagoj Biljesko v Stevan Popovic | 6-1,6-2 |
| ITF M25 Kiseljak | 2021/05/26 10:00 | Domagoj Biljesko v Tim Heger | 6-7,6-2,3-6 |