| ITF M15 Irpin | 08/14 07:30 | 26 | Oleg Dolgosheyev v Nikita Mashtakov | 7-6,1-6,3-6 | |
| ITF M15 Irpin | 08/13 08:50 | 25 | Dmytro Kamynin v Nikita Mashtakov | 6-7,7-5,2-6 | |
| ITF M15 Telavi | 08/01 07:40 | 26 | Alexander Donski v Nikita Mashtakov | 7-6,6-0 | |
| ITF M15 Telavi | 07/30 06:45 | 25 | Nikita Mashtakov v Nikoloz Davlianidze | 6-3,7-5 | |
| ITF M15 Telavi | 07/28 12:00 | 29 | Dennis Uspensky v Nikita Mashtakov | 3-6,4-6 | |
| ITF M15 Telavi | 07/27 06:00 | 28 | Shalva Dzhanashia v Nikita Mashtakov | Retired | |
| ITF M15 Telavi | 07/26 06:00 | 27 | Nikita Mashtakov v George Tsivadze | 6-3,6-4 | |
| ITF M15 Telavi | 07/25 09:15 | 26 | Yan Bondarevskiy v Nikita Mashtakov | 6-1,2-6,5-7 | |
| ITF M15 Telavi | 07/23 07:55 | 25 | Nikita Mashtakov v Ivan Liutarevich | 7-6,6-2 | |
| ITF M15 Parnu | 07/20 09:45 | 28 | Jurgen Zopp v Nikita Mashtakov | 6-3,6-4 | |
| ITF M15 Parnu | 07/19 08:00 | 27 | Nikita Mashtakov v Luigi Sorrentino | 6-4,7-6 | |
| ITF M15 Parnu | 07/18 13:30 | 26 | Nikita Mashtakov v Alexander Donski | 7-5,6-3 | |
| ITF M15 Parnu | 07/18 08:30 | 25 | Maxime Pauwels v Nikita Mashtakov | 3-6,2-6 | |
| ITF M15 Vilnius | 07/10 08:00 | 25 | Christoffer Solberg v Nikita Mashtakov | 7-6,1-6,6-2 | |
| ITF M15 Vilnius | 07/09 07:30 | 54 | Nikita Mashtakov v Tomas Vaise | 6-3,7-5 | |
| ITF M15 Wroclaw | 07/04 11:50 | 26 | Petr Nouza v Nikita Mashtakov | 6-4,3-6,6-3 | |
| ITF M15 Wroclaw | 07/03 15:20 | 25 | Andrea Bessire v Nikita Mashtakov | 0-6,1-6 | |
| ITF M15 Wroclaw | 07/02 08:00 | 54 | Nikita Mashtakov v Mikolaj Borkowski | 6-2,7-5 | |
| ITF M15 Wroclaw | 07/01 08:00 | 54 | Nikita Mashtakov v Kris Krawcewicz | 6-4,6-0 | |
| ITF M15 Irpin | 05/29 07:00 | 26 | Nikita Mashtakov v Bogdan Bobrov | 4-6,7-5,6-7 | |
| ITF M15 Irpin | 05/28 10:45 | 25 | Nikita Mashtakov v Vitalii Shcherba | 6-3,7-5 | |
| ITF M15 Irpin | 05/27 10:00 | 54 | Nikita Mashtakov v Vladyslav Lobak | 6-3,6-0 | |
| ITF M15 Irpin | 05/27 06:30 | 54 | Nikita Mashtakov v Dzianis Zharyn | 6-2,6-3 | |
| ITF M15 Irpin | 05/23 08:00 | 27 | Nikita Mashtakov v Vladyslav Orlov | 4-6,2-6 | |
| ITF M15 Irpin | 05/22 07:00 | 26 | Adrian Andrzejczuk v Nikita Mashtakov | 3-6,4-6 | |
| ITF M15 Irpin | 05/21 12:40 | 25 | Nikita Mashtakov v Naoki Tajima | 6-0,7-6 | |
| ITF M15 Irpin | 05/20 10:00 | 54 | Nikita Mashtakov v Aliaksandr Liaonenka | 6-4,6-0 | |
| ITF M15 Irpin | 05/20 06:30 | 54 | Nikita Mashtakov v Beibit Zhukayev | 6-4,7-5 | |
| ITF M15 Sozopol | 05/10 08:30 | 27 | Nikita Mashtakov v Alexander Donski | 3-6,6-7 | |
| ITF M15 Sozopol | 05/09 08:30 | 26 | Nikita Mashtakov v Gabriel Donev | Retired |