| ITF - M15 Káhira | 2021/05/06 08:00 | Gabriel Donev v Volodymyr Uzhylovskyi | 6-1,6-1 |
| UTR Pro Tennis Series - Bukurešť | 2021/11/29 12:30 | Jordan Correia v Gabriel Donev | 6-1,6-3 |
| ITF - M15 Sozopol | 2021/10/05 13:30 | Sarp Agabigun v Gabriel Donev | 5-7,5-7 |
| ITF - M15 Sozopol | 2021/09/15 08:30 | George Lazarov v Gabriel Donev | 6-1,6-3 |
| ITF - M15 Ulčinj | 2021/09/10 09:00 | Gabriel Donev v Edoardo Lavagno | 1-6,2-6 |
| ITF - M15 Ulčinj | 2021/09/09 09:50 | Aziz Kijametovic v Gabriel Donev | 5-7,6-7 |
| ITF - M15 Ulčinj | 2021/09/08 08:00 | Gabriel Donev v Dusan Rajic | 6-4,6-7,7-5 |
| ITF - M15 Ulčinj | 2021/09/03 08:55 | Gabriel Donev v Ignacio Carou | 4-6,3-6 |
| ITF - M15 Ulčinj | 2021/09/02 08:30 | Gorazd Srbljak v Gabriel Donev | 1-6,6-7 |
| UTR Pro Tennis Series Barcelona | 2021/11/27 08:00 | Volodymyr Uzhylovskyi v Ilie Babinciuc | 1-4 |
| UTR Pro Tennis Series Barcelona | 2021/11/26 13:00 | Thomas Laurent v Volodymyr Uzhylovskyi | 6-4,6-4 |
| UTR Pro Tennis Series Barcelona | 2021/11/26 09:30 | Michiel de Krom v Volodymyr Uzhylovskyi | 6-0,6-2 |
| UTR Pro Tennis Series Barcelona | 2021/11/25 14:15 | Sergio Redondo v Volodymyr Uzhylovskyi | 6-2,5-1 |
| UTR Pro Tennis Series Barcelona | 2021/11/22 11:00 | Euan Mcintosh v Volodymyr Uzhylovskyi | 6-2,6-1 |
| ITF - M15 Sharm El Sheikh | 2021/11/17 09:20 | Kelsey Stevenson v Volodymyr Uzhylovskyi | 6-3,6-4 |
| ITF - M15 Sharm El Sheikh | 2021/11/16 08:00 | Volodymyr Uzhylovskyi v Aleksandr Kalinin | 6-3,6-7,12-10 |
| ITF - M15 Sharm El Sheikh | 2021/11/09 10:20 | Volodymyr Uzhylovskyi v Haoyuan Huang | 4-6,4-6 |