Stadium: Court 2 Round: 25 Ground: Clay
| ITF Belgium F10 | 2017/08/22 08:00 | Julian Onken v Mats Rosenkranz | 6-4,4-6,4-6 |
| ITF Germany F9 | 2017/08/02 11:40 | Jan Choinski v Julian Onken | 6-0,6-1 |
| ITF Germany F9 | 2017/08/01 09:00 | Julian Onken v Nathan Eshmade | 6-4,7-5 |
| Challenger Braunschweig Qual | 2017/07/08 11:20 | Julian Onken v Nicola Kuhn | 4-6,3-6 |
| Challenger Braunschweig Qual | 2017/07/08 08:00 | Julian Onken v Arnd Weyhausen | 6-2,6-4 |
| ITF Germany F4 | 2017/06/22 15:25 | Dominik Boehler v Julian Onken | 6-3,6-1 |
| ITF Germany F4 | 2017/06/20 14:20 | Linus Krohn v Julian Onken | 5-7,6-7 |
| ITF Turkey F15 | 2017/04/18 10:15 | Julian Onken v Cem Ilkel | 2-6,3-6 |
| ITF Belarus F3 | 2017/08/23 07:00 | Daniiar Duldaev v Yaraslav Shyla | 4-6,6-7 |
| ITF Belarus F3 | 2017/08/21 11:00 | Alexander Zgirovsky v Daniiar Duldaev | 2-6,5-7 |
| ITF Belarus F2 | 2017/08/15 07:00 | Aliaksandr Bury v Daniiar Duldaev | 6-4,6-3 |
| ITF Belarus F2 | 2017/08/13 07:00 | Daniiar Duldaev v Sharobiddin Abzalov | 7-5,6-0 |
| ITF Belarus F2 | 2017/08/12 07:00 | Daniiar Duldaev v Sardor Pulatov | 6-1,6-0 |
| ITF Belarus F1 | 2017/08/09 10:10 | Marsel Ilhan v Daniiar Duldaev | 0-6,6-4,7-5 |
| ITF Belarus F1 | 2017/08/08 07:00 | Daniiar Duldaev v Alexis Canter | 6-2,6-2 |
| ITF Russia F5 | 2017/07/31 08:00 | Maxim Ratniuk v Daniiar Duldaev | 6-4,7-5 |