| 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 |
| ITF M15 Ulcinj | 2021/09/08 08:00 | Gabriel Donev v Dusan Rajic | 6-4,6-7,7-5 |
| ITF M15 Ulcinj | 2021/09/03 08:55 | Gabriel Donev v Ignacio Carou | 4-6,3-6 |
| ITF M15 Ulcinj | 2021/09/02 08:30 | Gorazd Srbljak v Gabriel Donev | 1-6,6-7 |
| ITF M15 Telavi | 2021/08/04 08:45 | Evgeny Philippov v Gabriel Donev | 2-6,3-6 |
| ITF M15 Antalya | 2021/11/18 06:25 | Daniel Michalski v Ilya Snitari | 7-6,7-6 |
| ITF M15 Antalya | 2021/11/17 07:45 | Caspar Schuetze v Ilya Snitari | 3-6,2-6 |
| ITF M15 Antalya | 2021/11/16 11:30 | Ilya Snitari v Tomas R Sierra | 6-2,7-6 |
| ITF M15 Antalya | 2021/11/15 09:25 | Ilya Snitari v Mohamed Ali Abibsi | 6-4,6-0 |
| ITF M15 Antalya | 2021/11/14 08:00 | Ilya Snitari v Joseph White | 6-4,6-2 |
| ITF M15 Antalya | 2021/11/12 06:15 | Ilya Snitari v Cezar Cretu | 5-7,6-3,2-6 |
| ITF M15 Antalya | 2021/11/11 08:20 | Oleksandr Bielinskyi v Ilya Snitari | 6-7,4-6 |
| ITF M15 Antalya | 2021/11/10 08:40 | Berk Bugarikj v Ilya Snitari | 3-6,0-6 |