Stadium: Court 2 Round: 44 Ground: Hardcourt outdoor
| UTR Pro Tennis Series Sofia | 2021/09/02 11:30 | Ivailo Keremedchiev v Samuil Konov | 3-6,7-6,5-2 |
| UTR Pro Tennis Series Sofia | 2021/09/01 11:00 | Samuil Konov v Ivan Penev | 4-6,6-1,6-0 |
| UTR Pro Tennis Series Sofia | 2021/08/31 06:30 | Samuil Konov v Matias Zukas | 3-6,1-6 |
| UTR Pro Tennis Series Sofia | 2021/08/30 07:00 | Martin Dimitrov v Samuil Konov | 4-6,6-1,5-1 |
| ITF M15 Curtea de Arges | 2021/08/08 10:00 | Dan Alexandru Tomescu v Samuil Konov | 6-1,6-3 |
| ITF M25 Pitesti | 2021/08/01 13:30 | Martin Zeljenka v Samuil Konov | 6-4,6-4 |
| ITF M15 Antalya | 2021/06/28 12:20 | Daniil Glinka v Samuil Konov | 6-3,6-1 |
| ITF M15 Antalya | 2021/06/27 06:30 | Sabit Suntic v Samuil Konov | 4-6,3-6 |
| UTR Pro Tennis Series Sofia | 2021/09/01 08:00 | Denislav Prodanov v Josh Sheehy | 3-6,0-5 |
| UTR Pro Tennis Series Sofia | 2021/08/31 08:00 | Denislav Prodanov v Mario Radev | 6-1,1-6,6-3 |
| UTR Pro Tennis Series Sofia | 2021/08/30 07:00 | Christos Keisidis v Denislav Prodanov | 6-1,5-1 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/17 09:00 | Denislav Prodanov v Valentin Vanta | 2-6,3-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/16 07:30 | Petyr Kardzhiev v Denislav Prodanov | 0-6,1-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/15 10:30 | Iliyan Radulov v Denislav Prodanov | 2-6,2-6 |
| 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 | Denislav Prodanov v Ilya Snitari | 1-6,1-6 |