stadio: Kvarner 2 Round: 25 Ground: Clay
| UTF Invitational | 2020/06/13 13:00 | Nikita Mashtakov v Viacheslav Bielinskyi | 6-2,6-3 |
| UTF Invitational | 2020/06/10 13:00 | Nikita Mashtakov v Viacheslav Bielinskyi | 6-3,6-6 |
| ITF M15 Naples | 2023/03/02 17:50 | Viacheslav Bielinskyi v Sebastian Gima | 6-2,3-6,7-6 |
| ITF M15 Naples | 2023/03/01 14:55 | Jaycer Lyeons v Viacheslav Bielinskyi | 5-7,5-7 |
| ITF M15 Naples | 2023/02/23 15:00 | Viacheslav Bielinskyi v Victor Lilov | 2-6,6-7 |
| ITF M15 Naples | 2023/02/21 16:30 | Viacheslav Bielinskyi v Alejandro H Franco | 6-2,6-0 |
| ITF M15 Weston | 2023/02/16 14:50 | Gabi Adrian Boitan v Viacheslav Bielinskyi | 6-2,6-2 |
| ITF M15 Weston | 2023/02/15 13:50 | Junior Tavarez v Viacheslav Bielinskyi | 2-6,4-6 |
| Coppa Davis | 2023/02/03 11:35 | Viacheslav Bielinskyi v Benjamin Hassan | 6-4,2-6,6-4 |
| ITF M15 Vilnius | 2023/01/17 11:15 | Jiri Barnat v Viacheslav Bielinskyi | 6-3,6-2 |
| ITF M15 Rovigno | 2023/03/12 09:00 | Michael Gloeckler v Nikita Mashtakov | 6-4,4-6,10-6 |
| Challenger Kiev | 2021/09/05 08:00 | Alex Rybakov v Nikita Mashtakov | 6-2,6-2 |
| ITF M15 Sofia | 2021/07/09 07:00 | Nikita Mashtakov v Dragos Nicolae Madaras | 5-7,2-6 |
| ITF M15 Sofia | 2021/07/08 09:00 | Nikita Mashtakov v Aleksandr Braynin | 6-4,6-2 |
| ITF M15 Sofia | 2021/07/07 13:10 | Nikita Mashtakov v Mihai Razvan Marinescu | 3-6,6-1,6-1 |
| ITF M15 Novomoskovsk | 2021/06/03 18:30 | Nikita Mashtakov v Martins Podzus | 4-6,1-6 |
| ITF M15 Novomoskovsk | 2021/05/28 07:15 | Felix Gill v Nikita Mashtakov | 7-5,6-7,6-4 |
| ITF M15 Novomoskovsk | 2021/05/27 07:15 | Oleksandr Bielinskyi v Nikita Mashtakov | 6-3,1-6,5-7 |