Stadium: KARISMA Court (1) Round: 25 Ground: Clay
| UTR Pro Tennis Series Pazardzhik | 2021/04/10 10:30 | Gergely Madarasz v Gabriel Donev | 4-6,6-3,6-0 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/09 11:30 | Gabriel Donev v Ronan Joncour | 5-7,3-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/07 09:30 | Gabriel Donev v Plamen Milushev | 7-5,6-3 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/06 08:30 | Gabriel Donev v Yanaki Milev | 6-2,5-1 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/05 13:00 | Constant De La Bassetiere v Gabriel Donev | 5-7,1-6 |
| ITF M15 Antalya | 2021/03/30 07:00 | Gabriel Donev v Diego A B Sanchez | 4-6,6-1,7-10 |
| ITF M15 Antalya | 2021/03/29 07:00 | Gabriel Donev v Stefanos Sakellaridis | 6-3,5-7,10-2 |
| ITF M15 Antalya | 2021/03/28 06:30 | Gabriel Donev v Mikail Alimli | 6-1,6-2 |
| Eastern European Championship | 2020/07/30 11:00 | Milan Drinic v Dusan Rajic | 7-5,6-3 |
| Eastern European Championship | 2020/07/29 08:00 | Matias Zukas v Dusan Rajic | 6-3,6-4 |
| Eastern European Championship | 2020/07/28 08:00 | Cengiz Aksu v Dusan Rajic | 6-7,6-3,4-6 |
| Eastern European Championship | 2020/07/27 09:30 | Danilo Petrovic v Dusan Rajic | 6-2,6-4 |
| Eastern European Championship | 2020/07/24 12:00 | Nikola Cacic v Dusan Rajic | 7-6,7-6 |
| Eastern European Championship | 2020/07/23 09:30 | Daniil Savelev v Dusan Rajic | 2-6,3-6 |
| Eastern European Championship | 2020/07/22 10:00 | Matias Zukas v Dusan Rajic | 6-3,6-2 |
| Eastern European Championship | 2020/07/16 10:00 | Nini Gabriel Dica v Dusan Rajic | 5-7,3-6 |