| ITF Greece F4 | 2015/04/13 07:00 | Antoine Bellier v Denis Merkulov | 6-1,6-0 |
| ITF Greece F4 | 2015/04/11 10:00 | Toni Neykov v Denis Merkulov | 1-6,5-7 |
| ITF Greece F3 | 2015/04/04 10:30 | Denis Merkulov v Michal Bisko | 4-6,5-7 |
| ITF Greece F2 Qual | 2015/03/28 09:30 | Denis Merkulov v Sebastian Bader | 2-6,0-6 |
| ITF Portugal F3 Qual | 2015/03/08 14:00 | Goncalo Oliveira v Denis Merkulov | 6-2,6-1 |
| ITF Portugal F1 | 2015/02/23 16:30 | Michael Geerts v Denis Merkulov | 6-2,6-3 |
| ITF Portugal F1 | 2015/02/23 11:30 | Denis Merkulov v Nino Portales | 7-6,6-3 |
| ITF Portugal F1 | 2015/02/22 11:30 | Manuel Almeida v Denis Merkulov | 4-6,2-6 |
| ITF Russia F3 Qual | 2015/06/08 07:00 | Vladyslav Manafov v Nikita Matveyko | 6-4,6-3 |
| ITF Russia F3 Qual | 2015/06/07 07:00 | Alan Bzarov v Nikita Matveyko | 2-6,7-6,3-6 |
| ITF Russia F3 | 2015/06/01 13:25 | Nikita Matveyko v Alexander Vasilenko | 3-6,6-2,3-6 |
| ITF Ukraine F3 | 2015/05/25 07:00 | Vasko Mladenov v Nikita Matveyko | 4-6,6-4,6-1 |
| ITF Ukraine F3 | 2015/05/24 07:00 | Artem Kapshuk v Nikita Matveyko | 4-6,5-7 |
| ITF Ukraine F2 | 2015/05/19 13:35 | Artem Smirnov v Nikita Matveyko | 6-3,6-2 |
| ITF Ukraine F2 | 2015/05/18 07:00 | Oleg Prihodko v Nikita Matveyko | 0-6,6-4,4-6 |
| ITF Ukraine F2 | 2015/05/17 09:00 | Alexey Prokopchuk v Nikita Matveyko | 3-6,3-6 |