| UTR Pro Tennis Series - Bukarest | 2021/12/04 11:00 | Gabriel Donev v Simon A Ivanov | 6-4,3-6,1-6 |
| UTR Pro Tennis Series - Bukarest | 2021/12/03 12:30 | Gabriel Donev v Valentin Vanta | 3-6,1-6 |
| UTR Pro Tennis Series - Bukarest | 2021/12/01 09:30 | Gabriel Donev v Volodymyr Uzhylovskyi | 6-0,4-6,5-2 |
| UTR Pro Tennis Series - Bukarest | 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 - Ulcinj | 2021/09/10 09:00 | Gabriel Donev v Edoardo Lavagno | 1-6,2-6 |
| ITF - M15 - Ulcinj | 2021/09/09 09:50 | Aziz Kijametovic v Gabriel Donev | 5-7,6-7 |
| UTR Pro Tennis Series - Barcelona | 2021/12/12 11:00 | Thomas Laurent v Ilya Snitari | 6-3,5-1 |
| UTR Pro Tennis Series - Barcelona | 2021/12/11 11:00 | Alen Rogic-Hadzalic v Ilya Snitari | 0-6,1-6 |
| UTR Pro Tennis Series - Barcelona | 2021/12/10 08:00 | Ilya Snitari v Stefanos Sakellaridis | 6-4,6-3 |
| UTR Pro Tennis Series - Barcelona | 2021/12/09 09:30 | Ilya Snitari v Pol Toledo Bague | 6-3,6-1 |
| UTR Pro Tennis Series - Barcelona | 2021/12/08 10:30 | Sergio Redondo v Ilya Snitari | 3-6,6-3,5-7 |
| UTR Pro Tennis Series - Barcelona | 2021/12/07 12:00 | Yanais Laurent v Ilya Snitari | 3-6,4-6 |
| UTR Pro Tennis Series - Bukarest | 2021/12/05 08:00 | Stefan A Andreescu v Ilya Snitari | 4-6,6-3,3-6 |
| UTR Pro Tennis Series - Bukarest | 2021/12/03 13:30 | Vlad Andrei Dancu v Ilya Snitari | 6-2,6-7,6-2 |