Round: 25 Ground: Hardcourt outdoor
| ITF Austria F6 | 2015/07/26 12:30 | Philipp Dittmer v Ondrej Krstev | 7-6,6-2 |
| ITF Austria F6 | 2015/07/25 14:00 | Charly Zick v Ondrej Krstev | 6-7,0-6 |
| ITF Czech Republic F6 | 2015/07/06 08:00 | Ondrej Krstev v Peter Vajda | 3-6,1-6 |
| ITF Czech Republic F6 Qual | 2015/07/04 11:00 | Ondrej Krstev v Filipp Kekercheni | 6-3,5-7,6-3 |
| ITF Czech Republic F6 Qual | 2015/07/04 07:00 | Andrej Glvac v Ondrej Krstev | 3-6,4-6 |
| ITF Czech Republic F5 | 2015/06/30 09:00 | Ondrej Krstev v Evgeny Karlovskiy | 3-6,4-6 |
| ITF Czech Republic F5 Qual | 2015/06/29 08:00 | Zdenek Derkas v Ondrej Krstev | 5-7,6-7 |
| ITF Czech Republic F4 | 2015/06/24 11:05 | Artem Smirnov v Ondrej Krstev | 6-4,6-4 |
| ITF Poland F4 Qual | 2015/08/31 09:30 | Mikolaj Jedruszczak v Julian Onken | 7-5,6-0 |
| ITF Poland F4 Qual | 2015/08/30 07:30 | Dominik Nazaruk v Julian Onken | 2-6,0-6 |
| ITF Germany F12 | 2015/08/20 13:10 | Julian Onken v Vladyslav Manafov | 4-6,1-6 |
| ITF Germany F12 | 2015/08/19 11:00 | Julian Onken v Francois-Arthur Vibert | 6-3,0-6,7-6 |
| ITF Germany F11 | 2015/08/13 15:00 | Florian Fallert v Julian Onken | 6-4,3-6,6-0 |
| ITF Germany F11 | 2015/08/09 07:30 | Julian Onken v Thomas Wright | 6-4,6-2 |
| ITF Germany F9 | 2015/07/29 15:25 | Julian Onken v Clement Geens | 3-6,1-6 |
| ITF Germany F9 | 2015/07/26 07:30 | Gijs Buntsma v Julian Onken | 3-6,3-6 |