Stadium: Court 3 Round: 26 Ground: Clay
| ITF M15 Doboj | 2021/07/14 13:10 | Dusan Obradovic v Domagoj Biljesko | 7-5,6-2 |
| 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 M15 Doboj | 2021/07/13 10:00 | Tomislav Jotovski v Oleksandr Ovcharenko | 3-6,0-6 |
| ITF M15 Poprad | 2021/07/06 11:00 | Oleksandr Ovcharenko v Eric Vanshelboim | 2-6,2-6 |
| ITF M25 Wroclaw | 2021/06/28 11:00 | Davide Tortora v Oleksandr Ovcharenko | 6-4,6-4 |
| ITF M25 Wroclaw | 2021/06/27 11:00 | Mikolaj Borkowski v Oleksandr Ovcharenko | 4-6,0-6 |
| ITF M15 Novomoskovsk | 2021/06/04 07:00 | Matias Zukas v Oleksandr Ovcharenko | 6-3,6-1 |
| ITF M15 Novomoskovsk | 2021/06/03 15:30 | Oleksandr Ovcharenko v Timur Mukhtarulin | 6-1,6-4 |
| ITF M15 Novomoskovsk | 2021/05/27 07:15 | Jose Fco. Vidal Azorin v Oleksandr Ovcharenko | 6-4,6-3 |
| ITF M15 Novomoskovsk | 2021/05/26 08:20 | Oleksandr Ovcharenko v Marat Deviatiarov | 7-6,6-4 |