Stadium: Court 1 Round: 26 Ground: Hardcourt outdoor
| ITF M15 Sozopol | 2019/05/07 14:00 | Oleksii Krutykh v Nikita Mashtakov | 4-6,4-6 |
| ITF - M15 Tbilisi | 2019/05/01 07:55 | Nikita Mashtakov v John Echeverria | 4-6,4-6 |
| ITF M15 Madrid | 2019/04/15 09:30 | Nikita Mashtakov v Joffrey De Schepper | 3-6,3-6 |
| ITF M15 Reus | 2019/04/10 10:25 | Esteve Lobato, Eduard v Nikita Mashtakov | 6-3,6-1 |
| ITF M15 Reus | 2019/04/08 08:30 | Nikita Mashtakov v Santillana, Arnau | 6-0,6-0 |
| ITF - M15 Opatija | 2019/03/27 14:25 | Nikita Mashtakov v Eriksson, Markus | 6-3,3-6,3-6 |
| ITF - M15 Opatija | 2019/03/26 10:50 | Nikita Mashtakov v Mammetgulyyev, Isa | 6-4,6-2 |
| ITF - M15 Opatija | 2019/03/25 11:45 | Nikita Mashtakov v Radanovic, Goran | 6-2,6-3 |
| ITF M15 Sozopol | 2019/05/08 08:00 | Gabriel Donev v Boris Pokotilov | 5-7,6-4,6-4 |
| ITF - M15 Sunrise | 2019/04/08 15:00 | Knight, Alexander v Gabriel Donev | 6-4,6-3 |
| ITF M15 Cancun | 2019/03/27 16:30 | Gabriel Donev v Watson, Andrew | 0-6,2-6 |
| ITF M15 Cancun | 2019/03/25 19:00 | Botezan, George v Gabriel Donev | 2-6,2-6 |
| ITF M15 Cancun | 2019/03/25 17:00 | Gonzalez, Wilfredo v Gabriel Donev | 2-6,6-3,8-10 |
| ITF M15 Cancun | 2019/03/18 18:30 | Tikhomirov, Maksim v Gabriel Donev | 6-2,6-2 |
| ITF M15 Cancun | 2019/03/18 14:30 | Mcbride, Matt v Gabriel Donev | 6-4,4-6,8-10 |
| ITF - M15 Antalya | 2019/02/18 07:00 | Alexander Weis v Gabriel Donev | 6-2,6-0 |