Stadium: Court 1 Round: 26 Ground: Hardcourt outdoor
| ITF M15 Sozopol | 2021/10/14 12:30 | Cozbinov, Alexander v Valentin Vanta | 6-2,6-1 |
| ITF M15 Sozopol | 2021/10/08 07:00 | Bondarevskiy, Yan v Cozbinov, Alexander | 1-6,6-2,6-1 |
| ITF M15 Sozopol | 2021/10/07 06:50 | Anthony Genov v Cozbinov, Alexander | 3-6,1-6 |
| ITF M15 Sozopol | 2021/10/06 09:35 | Dimitrov, Martin v Cozbinov, Alexander | 1-6,3-6 |
| ITF M25 Skopje | 2021/10/01 12:30 | Cozbinov, Alexander v Matteo Arnaldi | 0-6,1-6 |
| ITF M25 Skopje | 2021/10/01 08:15 | Cozbinov, Alexander v Battaglino, Stefano | 6-2,7-5 |
| ITF M25 Skopje | 2021/09/28 11:15 | Mariano Navone v Cozbinov, Alexander | 6-3,5-7,1-6 |
| Istanbul, Turkey | 2021/09/12 08:00 | Adrian Andreev v Cozbinov, Alexander | 6-4,6-4 |
| ITF M15 Sozopol | 2021/10/13 15:35 | Prechtel, Sebastian v Tepavac, Marko | 0-6,3-6 |
| ITF M15 Zlatibor | 2021/09/18 12:00 | Gergely Madarasz v Tepavac, Marko | 4-6,4-6 |
| ITF M15 Zlatibor | 2021/09/17 09:55 | Oleksandr Ovcharenko v Tepavac, Marko | 3-6,4-6 |
| ITF M15 Zlatibor | 2021/09/16 11:00 | Dominik Palan v Tepavac, Marko | 3-6,1-6 |
| ITF M15 Zlatibor | 2021/09/15 14:25 | Andres Gabriel Ciurletti v Tepavac, Marko | 1-6,1-6 |
| Challenger Banja Luka | 2021/09/07 11:30 | Matija Pecotic v Tepavac, Marko | 4-6,6-3,7-6 |
| Challenger Banja Luka | 2021/09/06 09:00 | Madaras, Dragos Nicolae v Tepavac, Marko | 5-7,6-1,6-7 |
| Challenger Banja Luka | 2021/09/05 13:20 | Danijal Muminovic v Tepavac, Marko | 2-6,3-6 |