Stadium: Court 1 Round: 26 Ground: Hardcourt outdoor
| ITF M15 Antalya | 2019/02/02 07:00 | Bruno Santanna v Nikita Mashtakov | 4-6,6-3,12-10 |
| ITF M15 Antalya | 2019/02/01 07:00 | Nikita Mashtakov v Alexandros Skorilas | 6-4,6-2 |
| ITF M15 Antalya | 2019/01/25 09:40 | Nikita Mashtakov v Wilson Leite | 6-1,4-6,6-10 |
| ITF M15 Antalya | 2019/01/16 07:00 | Nikita Mashtakov v Timofey Skatov | 4-6,6-4,5-7 |
| ITF Estonia F3 | 2018/11/07 10:55 | Martins Podzus v Nikita Mashtakov | 6-2,6-1 |
| ITF Estonia F3 | 2018/11/05 09:00 | Nikita Mashtakov v Siim Troost | 6-4,1-6,6-3 |
| ITF Estonia F2 | 2018/10/31 12:10 | Alexander Vasilenko v Nikita Mashtakov | 6-3,7-5 |
| ITF Estonia F2 | 2018/10/30 11:45 | Nikita Mashtakov v Lukas Mugevicius | 3-6,7-5,6-0 |
| ATP Sofia | 2019/02/03 14:05 | Sergiy Stakhovsky v Gabriel Donev | 6-1,6-2 |
| ITF Turkey F37 | 2018/11/24 07:00 | Edris Fetisleam v Gabriel Donev | 6-1,6-4 |
| ITF Turkey F37 | 2018/11/23 08:25 | Thomas Statzberger v Gabriel Donev | 2-6,6-3,2-6 |
| ITF Turkey F37 | 2018/11/22 08:35 | Shao-Fan Liu v Gabriel Donev | 6-2,2-6,3-6 |
| ITF Turkey F37 | 2018/11/21 07:00 | Gabriel Donev v Davide Galoppini | 4-6,6-3,6-4 |
| ITF Turkey F36 | 2018/11/16 07:00 | Nik Razborsek v Gabriel Donev | 6-1,3-6,6-4 |
| ITF Turkey F36 | 2018/11/15 08:45 | Klim Ivanov v Gabriel Donev | 1-6,0-6 |
| ITF Turkey F36 | 2018/11/12 07:00 | Gabriel Donev v Maurizio Speziali | 6-4,7-5 |