| 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 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 |
| UTR Pro Tennis Series Beograd | 2021/07/08 09:00 | Constant De La Bassetiere v Michalis Sakellaridis | 6-2,5-4 |
| UTR Pro Tennis Series Beograd | 2021/07/06 14:00 | Nikola Slavic v Michalis Sakellaridis | 6-3,6-6 |
| UTR Pro Tennis Series Beograd | 2021/07/05 07:30 | Michalis Sakellaridis v Olexiy Kolisnyk | 3-5 |
| ITF M15 Antalya | 2021/06/27 06:30 | Michalis Sakellaridis v Lorenzo Joaquin Rodriguez | 2-6,4-6 |
| ITF M15 Antalya | 2021/06/20 07:00 | Michalis Sakellaridis v Daniel Antonio Nunez | 6-7,3-6 |
| ITF M15 Antalya | 2021/06/14 07:30 | Oleg Prihodko v Michalis Sakellaridis | 6-0,6-4 |
| ITF M15 Antalya | 2021/06/13 07:30 | Michalis Sakellaridis v Credit Chaiyarin | 6-4,6-4 |
| ITF M15 Antalya | 2021/06/07 11:10 | Timo Stodder v Michalis Sakellaridis | 7-5,6-4 |