| UTR Pro Tennis Series - Sofia | 2021/08/31 08:00 | Dian Nedev v Ivailo Keremedchiev | 6-4,5-2 |
| UTR Pro Tennis Series - Sofia | 2021/08/30 08:30 | Plamen Milushev v Dian Nedev | 4-6,2-5 |
| UTR Pro Tennis Series - Pazardzhik | 2021/07/17 07:30 | Aleksandr Braynin v Dian Nedev | 6-3,6-2 |
| 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 |
| 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 |
| ITF - M25 - Telawi | 2021/08/01 06:00 | Alessandro Ingarao v Alexandar Lazarov | 2-6,2-6 |
| ITF - M25 - Telawi | 2021/07/31 13:50 | Zura Tkemaladze v Alexandar Lazarov | 2-6,1-6 |