Stadium: Center Court Round: 46
| ITF Turkey F14 | 2016/04/07 07:00 | Sefa Suluoglu v Marc Sieber | 2-6,0-6 |
| Challenger Izmir Qual | 2017/09/16 09:20 | Marc Sieber v Koray Kirci | 6-4,6-2 |
| Challenger Istanbul | 2017/09/12 08:55 | Malek Jaziri v Marc Sieber | 6-2,7-6 |
| Challenger Istanbul Qual | 2017/09/10 10:35 | Marc Sieber v Vadym Ursu | 6-3,6-0 |
| Challenger Istanbul Qual | 2017/09/09 11:20 | Marc Sieber v Kevin Griekspoor | 6-2,6-3 |
| ITF Turkey F32 | 2017/09/01 11:00 | Wilson Leite v Marc Sieber | 3-6,2-6 |
| ITF Turkey F32 | 2017/08/31 12:00 | Felipe Meligeni Rodrigues Alves v Marc Sieber | 3-6,5-7 |
| ITF Turkey F32 | 2017/08/30 12:00 | Horst Rieder v Marc Sieber | 1-6,1-6 |
| ITF Germany F12 | 2017/08/25 15:10 | Marc Sieber v Louis Wessels | 6-3,3-6,4-6 |
| Challenger Izmir Qual | 2017/09/16 08:00 | Sefa Suluoglu v Alexander Zhurbin | 6-2,6-3 |
| Challenger Istanbul Qual | 2017/09/09 10:45 | Sefa Suluoglu v Robin Kern | 1-6,0-6 |
| Challenger Istanbul Qual | 2017/09/09 07:00 | Sefa Suluoglu v Umut Akkoyun | 6-4,7-5 |
| ITF Turkey F29 | 2017/08/08 13:00 | Sefa Suluoglu v Bogdan Bobrov | 0-6,2-6 |
| ITF Turkey F28 | 2017/08/01 08:00 | Sefa Suluoglu v Alon Elia | 2-6,1-6 |
| ITF Turkey F26 Qual | 2017/07/17 09:10 | Sefa Suluoglu v Martin Atanasov | 4-6,7-6,4-6 |
| ITF Turkey F26 Qual | 2017/07/16 09:30 | Sefa Suluoglu v Vincentiu A Niculescu | 1-6,6-3,6-1 |
| ITF Turkey F25 | 2017/07/12 07:00 | Nicolo Turchetti v Sefa Suluoglu | 6-2,6-4 |