Stadium: Hard Court 7 Round: 27 Ground: Hardcourt outdoor
| ITF Turkey F1 | 2018/01/12 12:55 | Sieber, Marc v Eon, Julien | 6-1,6-0 |
| ITF Turkey F1 | 2018/01/09 09:15 | Sieber, Marc v Alekseenko, Vadim | 6-2,6-0 |
| ITF Turkey F1 | 2018/01/08 07:30 | Sieber, Marc v Bojanovic, Darko | 6-1,6-0 |
| ITF Turkey F1 | 2018/01/07 07:30 | Sieber, Marc v Ono, Masayoshi | 6-2,6-2 |
| Challenger Bratislava Qual | 2017/11/05 09:00 | Kalenichenko, Danylo v Sieber, Marc | 7-6,6-3 |
| Challenger Bratislava Qual | 2017/11/04 09:00 | Altug Celikbilek v Sieber, Marc | 7-5,1-6,0-6 |
| Challenger Eckental Qual | 2017/10/30 11:20 | Kern, Robin v Sieber, Marc | 6-4,6-2 |
| Challenger Eckental Qual | 2017/10/29 16:10 | Cacic, Nikola v Sieber, Marc | 2-6,6-3,1-6 |
| ITF Turkey F1 | 2018/01/12 13:20 | Tiran Sanghera v Gray, Jonathan | 6-2,2-6,6-7 |
| ITF Turkey F1 | 2018/01/09 08:00 | Haylaz, Muhammet v Gray, Jonathan | 4-6,1-6 |
| ITF Vietnam F2 | 2017/11/19 05:00 | Gray, Jonathan v Nam Hoang Ly | 7-6,6-3 |
| ITF Vietnam F2 | 2017/11/18 04:05 | Gray, Jonathan v Mukund Sasikumar | 6-1,6-1 |
| ITF Vietnam F2 | 2017/11/17 04:35 | Gray, Jonathan v Katayama, Sho | 6-4,6-1 |
| ITF Vietnam F2 | 2017/11/15 03:00 | Gray, Jonathan v Niesten, Miliaan | 6-3,6-2 |
| ITF Vietnam F2 | 2017/11/13 04:00 | Chen, Ti v Gray, Jonathan | 7-6,3-6,3-6 |
| ITF Vietnam F1 | 2017/11/07 07:20 | Katayama, Sho v Gray, Jonathan | 6-3,6-4 |