| UTR Pro Tennis Series Sofia | 2021/09/02 08:30 | Alexandar Lazarov v Valentin Vanta | 6-4,3-6,5-3 |
| UTR Pro Tennis Series Sofia | 2021/09/01 08:00 | Dian Nedev v Alexandar Lazarov | 1-6,4-6 |
| UTR Pro Tennis Series Sofia | 2021/08/31 08:30 | Alec Adamson v Alexandar Lazarov | 2-6,1-5 |
| UTR Pro Tennis Series Sofia | 2021/08/30 13:30 | Ivailo Keremedchiev v Alexandar Lazarov | 1-6,6-6 |
| UTR Pro Tennis Series Sofia | 2021/08/29 12:30 | Mihael Mihaylov v Alexandar Lazarov | 0-6,3-6 |
| ITF M25 Bacau | 2021/08/20 13:00 | Alexandar Lazarov v Arthur Cazaux | 6-7,4-6 |
| ITF M25 Bacau | 2021/08/19 15:35 | Alexandar Lazarov v Dan Alexandru Tomescu | 6-2,6-4 |
| ITF M25 Bacau | 2021/08/18 11:25 | Alexandar Lazarov v Victor Vlad Cornea | 6-4,6-4 |
| UTR Pro Tennis Series Sofia | 2021/09/02 10:00 | Leonid Sheyngezikht v Viktor Markov | 6-2,5-3 |
| UTR Pro Tennis Series Sofia | 2021/09/01 09:30 | Leonid Sheyngezikht v Alexandru Luca | 6-3,6-2 |
| UTR Pro Tennis Series Sofia | 2021/08/31 06:30 | Leonid Sheyngezikht v Ivan Mikhaylyuk | 6-2,7-5 |
| UTR Pro Tennis Series Sofia | 2021/08/30 07:00 | Leonid Sheyngezikht v Tadija Radovanovic | 6-2,6-3 |
| ITF M15 Cairo | 2021/08/03 08:55 | Vladislav Ivanov v Leonid Sheyngezikht | 7-6,6-2 |
| ITF M15 Cairo | 2021/08/03 07:30 | Vladislav Ivanov v Leonid Sheyngezikht | 7-6,6-2 |
| ITF M15 Cairo | 2021/08/02 09:30 | Mohab Hamed v Leonid Sheyngezikht | 0-6,3-6 |
| ITF M15 Cairo | 2021/08/01 12:30 | Ali Habib v Leonid Sheyngezikht | 4-6,3-6 |