Stadium: Court 17 Round: 25 Ground: Clay
| ITF M25 Bielsko Biala | 2023/08/16 15:05 | Nikita Mashtakov v Viacheslav Bielinskyi | 2-6,4-6 |
| ITF M15 Opatija | 2023/03/22 08:30 | Viacheslav Bielinskyi v Nikita Mashtakov | 6-3,6-4 |
| 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 Osijek | 2024/04/30 07:50 | Nikita Mashtakov v Freek Van Donselaar | 2-6,6-3,10-12 |
| ITF M15 Osijek | 2024/04/29 13:00 | Nikita Mashtakov v Afan Nekovic | 6-1,6-1 |
| ITF M15 Split | 2024/04/23 09:00 | Nikita Mashtakov v Jan Kupcic | 3-6,6-2,8-10 |
| ITF M15 Split | 2024/04/22 08:00 | Nikita Mashtakov v Nicolo Toffanin | 6-0,6-0 |
| ITF M15 Dubrovnik | 2024/04/17 10:45 | Nikita Mashtakov v Neil Oberleitner | 4-6,2-6 |
| ITF M15 Dubrovnik | 2024/04/15 11:00 | Nikita Mashtakov v Nik Mikovic | 6-1,6-7,10-8 |
| ITF M15 Dubrovnik | 2024/04/14 16:00 | Nikita Mashtakov v Danylo Semenov | 6-1,6-2 |
| ITF M15 Antalya | 2024/03/31 07:00 | Yannik Kelm v Nikita Mashtakov | 4-6,6-3,10-6 |
| ITF M15 Osijek | 2024/05/05 10:30 | Viacheslav Bielinskyi v Mili Poljicak | 6-2,6-0 |
| ITF M15 Osijek | 2024/05/04 10:35 | Khumoyun Sultanov v Viacheslav Bielinskyi | 0-6,3-6 |
| ITF M15 Osijek | 2024/05/03 13:30 | Viacheslav Bielinskyi v Marino Jakic | 6-4,6-2 |
| ITF M15 Osijek | 2024/05/02 09:30 | Viacheslav Bielinskyi v Kai Lemstra | 6-1,6-0 |
| ITF M15 Osijek | 2024/04/30 15:15 | Viacheslav Bielinskyi v Antonio Voljavec | 6-0,6-1 |
| ITF M15 Split | 2024/04/26 11:00 | Michael Vrbensky v Viacheslav Bielinskyi | 6-0,6-3 |
| ITF M15 Split | 2024/04/25 07:55 | Aldin Setkic v Viacheslav Bielinskyi | 2-6,7-6,2-6 |
| ITF M15 Split | 2024/04/24 13:40 | Filippo Speziali v Viacheslav Bielinskyi | 3-6,2-6 |