Round: 25 Ground: Hardcourt outdoor
| ITF Turkey F3 | 2017/01/27 08:00 | Cem Ilkel v Marc Sieber | 7-6,6-4 |
| ITF Turkey F15 | 2016/04/17 09:00 | Marc Sieber v Cem Ilkel | 2-6,6-4,6-4 |
| ITF Turkey F13 | 2016/04/02 10:30 | Cem Ilkel v Marc Sieber | 1-6,6-3,6-2 |
| ITF Turkey F6 | 2017/02/19 08:30 | Benjamin Lock v Marc Sieber | 3-6,6-7 |
| ITF Turkey F6 | 2017/02/18 08:00 | Christopher Heyman v Marc Sieber | 3-6,1-6 |
| ITF Turkey F6 | 2017/02/17 07:30 | Felipe Mantilla v Marc Sieber | 1-6,6-7 |
| ITF Turkey F6 | 2017/02/16 09:25 | Alexios Halebian v Marc Sieber | 1-6,0-6 |
| ITF Turkey F6 | 2017/02/14 09:05 | Marat Deviatiarov v Marc Sieber | 2-6,1-6 |
| Challenger Budapest | 2017/02/08 09:30 | Joris De Loore v Marc Sieber | 6-3,7-6 |
| ITF Turkey F3 | 2017/01/27 08:00 | Cem Ilkel v Marc Sieber | 7-6,6-4 |
| ITF Turkey F3 | 2017/01/26 07:30 | Matej Vocel v Marc Sieber | 4-6,0-6 |
| ITF Turkey F7 | 2017/02/20 07:00 | Cem Ilkel v Domagoj Biljesko | 6-4,6-7,7-5 |
| ITF Turkey F7 | 2017/02/19 06:30 | Cem Ilkel v Vladimir Korolev | 6-2,6-2 |
| ITF Turkey F7 | 2017/02/18 06:00 | Cem Ilkel v Yannick Stephan Born | 6-2,6-3 |
| ATP Sofia | 2017/02/08 11:50 | Cem Ilkel v Viktor Troicki | 3-6,2-6 |
| Davis Cup | 2017/02/03 09:00 | Petros Chrysochos v Cem Ilkel | 7-6,6-3,3-6,0-6,4-6 |
| ITF Turkey F3 | 2017/01/28 08:00 | Michal Konecny v Cem Ilkel | 4-6,6-3,6-7 |
| ITF Turkey F3 | 2017/01/27 08:00 | Cem Ilkel v Marc Sieber | 7-6,6-4 |
| ITF Turkey F3 | 2017/01/26 09:55 | Cem Ilkel v Anton Zaitcev | 6-1,6-0 |