Round: 25 Ground: Hardcourt outdoor
| ITF Turkey F17 | 2017/05/06 08:00 | Dennis Novak v Michiel de Krom | 6-4,6-7,6-1 |
| ITF Turkey F17 | 2017/05/05 07:30 | Michiel de Krom v Bruno Santanna | 6-4,7-5 |
| ITF Turkey F17 | 2017/05/04 07:00 | Michiel de Krom v Sarp Agabigun | 6-2,7-6 |
| ITF Turkey F17 | 2017/05/02 08:05 | Roman Safiullin v Michiel de Krom | 6-7,3-6 |
| ITF Turkey F17 | 2017/05/01 07:30 | Volodymyr Uzhylovskyi v Michiel de Krom | 4-6,4-6 |
| ITF Turkey F17 | 2017/04/30 07:00 | Yohei Otsuka v Michiel de Krom | 2-6,2-6 |
| ITF Spain F11 | 2017/04/26 13:00 | Raul Brancaccio v Michiel de Krom | 6-2,6-1 |
| ITF Spain F11 | 2017/04/25 13:15 | Michiel de Krom v Roberto Ortega-Olmedo | 6-3,3-6,6-2 |
| ATP Istanbul Qual | 2017/04/29 13:25 | Adrian Menendez-Maceiras v Marc Sieber | 7-5,6-4 |
| Challenger Francavilla | 2017/04/24 11:45 | Stefano Napolitano v Marc Sieber | 6-4,1-6,6-4 |
| ITF Turkey F15 | 2017/04/20 07:00 | Dimitar Kuzmanov v Marc Sieber | 4-6,6-4,6-2 |
| ITF Turkey F15 | 2017/04/18 10:55 | Oleg Ladik v Marc Sieber | 2-6,0-6 |
| ITF Turkey F14 | 2017/04/12 07:30 | Juan Pablo Varillas v Marc Sieber | 2-6,7-5,6-3 |
| Challenger St Brieuc | 2017/03/28 08:30 | Marc Sieber v Gleb Sakharov | 2-6,3-6 |
| ITF Egypt F9 | 2017/03/15 08:00 | Marc Sieber v Artem Smirnov | 3-6,3-6 |
| ITF Egypt F8 | 2017/03/08 08:00 | Marc Sieber v Rudolf Molleker | 2-6,4-6 |