| UTR Pro Tennis Series - Pazardzhik | 2021/07/16 06:00 | Gorazd Srbljak v Aleksandr Braynin | 6-4,3-6,6-3 |
| UTR Pro Tennis Series - Pazardzhik | 2021/07/15 09:00 | Vladimir Popov v Aleksandr Braynin | 4-6,5-7 |
| UTR Pro Tennis Series - Pazardzhik | 2021/07/14 07:30 | Vasil Kirkov v Aleksandr Braynin | 7-5,5-1 |
| UTR Pro Tennis Series - Pazardzhik | 2021/07/12 06:00 | Yanaki Milev v Aleksandr Braynin | 7-6,4-6,4-6 |
| ITF - M15 Sofia | 2021/07/08 09:00 | Nikita Mashtakov v Aleksandr Braynin | 6-4,6-2 |
| ITF - M15 Sofia | 2021/07/07 07:00 | Denis Klok v Aleksandr Braynin | 4-6,3-6 |
| ITF - M15 Sofia | 2021/07/05 08:00 | Aleksandr Braynin v Maxim Krapivin | 6-4,6-3 |
| ITF - M15 Novomoskovsk | 2021/06/04 14:00 | Aleksandr Braynin v Alex M Pujolras | 1-6,6-3,3-6 |
| UTR Pro Tennis Series - Pazardzhik | 2021/07/15 10:30 | Dian Nedev v Ilya Snitari | 4-6,6-4,1-6 |
| UTR Pro Tennis Series - Pazardzhik | 2021/07/14 06:00 | Dian Nedev v Iliyan Radulov | 7-5,6-1 |
| UTR Pro Tennis Series - Pazardzhik | 2021/07/13 09:00 | Dian Nedev v Denislav Prodanov | 6-7,4-5 |
| UTR Pro Tennis Series - Pazardzhik | 2021/07/12 07:30 | Dian Nedev v Aristotelis Thanos | 6-4,5-4 |
| ITF - M15 Antalya | 2021/06/21 11:35 | Dian Nedev v Filip Duda | 4-6,2-6 |
| ITF - M15 Antalya | 2021/06/20 07:00 | Jason Janis v Dian Nedev | 2-6,2-6 |
| ITF - M15 Antalya | 2021/06/15 09:45 | Dian Nedev v Pietro Marino | 2-6,6-7 |
| ITF - M15 Antalya | 2021/06/14 13:35 | Dian Nedev v Egor Matvievici | 6-1,6-2 |