| UTR Pro Tennis Series Bucharest | 2021/12/04 11:00 | Gabriel Donev v Simon A Ivanov | 6-4,3-6,1-6 |
| UTR Pro Tennis Series Bucharest | 2021/12/03 12:30 | Gabriel Donev v Valentin Vanta | 3-6,1-6 |
| UTR Pro Tennis Series Bucharest | 2021/12/01 09:30 | Gabriel Donev v Volodymyr Uzhylovskyi | 6-0,4-6,5-2 |
| UTR Pro Tennis Series Bucharest | 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 | 2021/11/28 08:00 | Ilie Babinciuc v Fermin Calvo Barcelo | 0-6,3-6 |
| 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 11:00 | Ilie Babinciuc v Vlad Cristian Breazu | 3-6,3-6 |
| UTR Pro Tennis Series Barcelona | 2021/11/25 17:30 | Ilie Babinciuc v Tomas C Abasolo | 0-6,6-1,5-7 |
| UTR Pro Tennis Series Barcelona | 2021/11/25 13:00 | Ilie Babinciuc v Kuzey Cekirge | 4-6,4-6 |
| UTR Pro Tennis Series Barcelona | 2021/01/30 08:00 | Casper Christensen v Ilie Babinciuc | 5-7,0-6 |
| UTR Pro Tennis Series Barcelona | 2021/01/28 10:30 | Ilie Babinciuc v Oriol Roca Batalla | 0-6,1-6 |
| UTR Pro Tennis Series Barcelona | 2021/01/27 10:30 | Ilie Babinciuc v Juan P Canas Garcia | 0-6,7-6,1-6 |