Estádio: Court 3 Round: 44 Ground: Clay
| ITF - M15 Novomoskovsk | 2021/05/26 09:05 | Ivan Nedelko v Gabriel Donev | 6-3,6-4 |
| ITF - M15 Novomoskovsk | 2021/05/25 08:45 | Gabriel Donev v Alexander Zgirovsky | 6-4,6-2 |
| ITF - M15 Novomoskovsk | 2021/05/24 12:00 | Gabriel Donev v Dzianis Zharyn | 7-6,6-7,10-6 |
| ITF - M15 Cairo | 2021/05/07 10:15 | Gabriel Donev v Oliver Crawford | 6-3,2-6,2-6 |
| ITF - M15 Cairo | 2021/05/06 08:00 | Gabriel Donev v Volodymyr Uzhylovskyi | 6-1,6-1 |
| ITF - M15 Cairo | 2021/05/04 09:45 | Gabriel Donev v Benedikt Emesz | 6-2,6-2 |
| ITF - M15 Cairo | 2021/05/03 08:00 | Gabriel Donev v Santiago De La Fuente | 7-5,1-6,17-15 |
| ITF - M15 Cairo | 2021/04/28 09:35 | Carlos Sanchez Jover v Gabriel Donev | 6-1,6-2 |
| ITF - M15 Novomoskovsk | 2021/05/30 06:15 | Sergo Sikharulidze v Denis Parshutin | 3-6,3-6 |
| ITF - M15 Novomoskovsk | 2021/05/23 10:30 | Denis Parshutin v Oleksandr Bielinskyi | 2-6,3-6 |
| ITF - M15 Antália | 2021/04/26 09:00 | Denis Parshutin v Daniil Glinka | 2-6,4-6 |
| ITF - M15 Antália | 2021/04/25 07:00 | Denis Parshutin v Joel Vincent Link | 6-3,6-1 |
| ITF - M15 Antália | 2021/04/18 07:00 | Michalis Sakellaridis v Denis Parshutin | 3-6,7-5,10-7 |
| ITF - M15 Antália | 2021/04/11 07:00 | Gabriele Moghini v Denis Parshutin | 4-6,6-1,10-8 |
| ITF - M15 Antália | 2021/03/22 07:00 | Vlad Andrei Dancu v Denis Parshutin | 7-6,6-1 |
| ITF - M15 Antália | 2021/03/21 07:00 | Danylo Semenov v Denis Parshutin | 0-6,0-6 |