Round: 25 Ground: Hardcourt outdoor
| ITF Turkey F23 | 2017/06/15 07:00 | Jannis Kahlke v Marc Sieber | 1-6,2-6 |
| ITF Turkey F23 | 2017/06/17 07:00 | Hugo Dellien v Marc Sieber | 6-3,6-1 |
| ITF Turkey F23 | 2017/06/16 08:30 | Richard Gabb v Marc Sieber | 3-6,3-6 |
| ITF Turkey F23 | 2017/06/15 07:00 | Jannis Kahlke v Marc Sieber | 1-6,2-6 |
| ITF Turkey F23 | 2017/06/13 08:35 | Bradley Mousley v Marc Sieber | 3-6,3-6 |
| Challenger Mestre | 2017/05/23 09:30 | Gianluca Mager v Marc Sieber | 7-6,6-3 |
| ITF Turkey F18 | 2017/05/14 08:00 | Dennis Novak v Marc Sieber | 6-4,6-4 |
| ITF Turkey F18 | 2017/05/13 07:30 | Marc Sieber v Ryan James Storrie | 6-2,6-1 |
| ITF Turkey F18 | 2017/05/12 07:00 | Bruno Santanna v Marc Sieber | 2-6,3-6 |
| ITF Turkey F23 | 2017/06/15 07:00 | Jannis Kahlke v Marc Sieber | 1-6,2-6 |
| ITF Turkey F23 | 2017/06/13 08:50 | Jannis Kahlke v Sefa Suluoglu | 7-5,6-4 |
| ITF Turkey F23 Qual | 2017/06/12 08:35 | Jannis Kahlke v Mert Naci Turker | 5-7,6-4,6-4 |
| ITF Turkey F22 | 2017/06/06 08:20 | Richard Gabb v Jannis Kahlke | 6-4,6-3 |
| ITF Turkey F22 | 2017/06/05 09:15 | Jannis Kahlke v Gleb Alekseenko | 6-2,6-4 |
| ITF Turkey F22 | 2017/06/04 09:30 | Jannis Kahlke v Adam Jones | 4-6,6-3,6-1 |
| ITF Qatar F2 | 2017/04/11 13:55 | Jannis Kahlke v Lucas Miedler | 4-6,1-6 |
| ITF Qatar F2 Qual | 2017/04/10 12:00 | Nik Razborsek v Jannis Kahlke | 6-7,7-5,2-6 |