Stadium: Court 6 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Sozopol | 2021/10/06 09:00 | Matic Dimic v Ben Patael | 2-6,3-6 |
| ITF M15 Sozopol | 2021/10/05 06:30 | Maxim Khorozov v Matic Dimic | 4-6,2-6 |
| ITF M15 Sozopol | 2021/10/04 08:00 | Dragos Petre Popeanga v Matic Dimic | 1-6,3-6 |
| ITF M15 Sozopol | 2021/10/03 09:00 | Radoslav Shandarov v Matic Dimic | 2-6,1-6 |
| ITF M15 Zlatibor | 2021/09/13 09:30 | Michal Novansky v Matic Dimic | 7-6,6-4 |
| ITF M15 Bad Waltersdorf | 2021/09/01 12:10 | Lenny Hampel v Matic Dimic | 6-3,6-2 |
| ITF M15 Bad Waltersdorf | 2021/08/31 07:00 | Matic Dimic v Christian Fellin | 6-1,6-1 |
| ITF M15 Bad Waltersdorf | 2021/08/30 09:00 | Edward Hubner v Matic Dimic | 3-6,3-6 |
| ITF M15 Sozopol | 2021/10/06 06:45 | Yan Bondarevskiy v George Lazarov | 6-7,6-1,6-3 |
| ITF M15 Sozopol | 2021/10/05 06:30 | George Lazarov v Nikola Keremedchiev | 6-2,6-7,3-10 |
| ITF M15 Sozopol | 2021/10/04 08:00 | George Lazarov v Dan Radu Munteanu | 6-0,6-2 |
| ITF M15 Sozopol | 2021/09/16 07:00 | Petru-Alexandru Luncanu v George Lazarov | 6-1,1-6,7-6 |
| ITF M15 Sozopol | 2021/09/15 08:30 | George Lazarov v Gabriel Donev | 6-1,6-3 |
| ITF M15 Sozopol | 2021/09/14 07:00 | George Lazarov v Mikhail Minakov | 7-5,4-6,10-4 |
| ITF M15 Sozopol | 2021/09/13 08:00 | Luigi Castelletti v George Lazarov | 3-6,4-6 |
| UTR Pro Tennis Series Sofia | 2021/09/04 07:30 | Alexander Lazov v George Lazarov | 3-5 |