Round: 28 Ground: Hardcourt outdoor
| ITF Turkey F18 | 2017/05/12 07:00 | Santanna, B. v Sieber, Marc | 2-6,3-6 |
| ITF Turkey F18 | 2017/05/11 07:00 | Statzberger, Thomas v Sieber, Marc | 5-7,0-6 |
| ITF Turkey F18 | 2017/05/09 07:00 | Michiel de Krom v Sieber, Marc | 2-6,1-6 |
| ATP Istanbul Qual | 2017/04/29 13:25 | Menendez-Maceiras, Adrian v Sieber, Marc | 7-5,6-4 |
| Challenger - Francavilla | 2017/04/24 11:45 | Stefano Napolitano v Sieber, Marc | 6-4,1-6,6-4 |
| Turkey F15, Singles Qualifying | 2017/04/20 07:00 | Dimitar Kuzmanov v Sieber, Marc | 4-6,6-4,6-2 |
| Turkey F15, Singles Qualifying | 2017/04/18 10:55 | Ladik, Oleg v Sieber, Marc | 2-6,0-6 |
| Turkey F14, Singles Qualifying | 2017/04/12 07:30 | Juan Pablo Varillas v Sieber, Marc | 2-6,7-5,6-3 |
| ITF Turkey F18 | 2017/05/12 07:00 | Stanek, Robin v Ryan James Storrie | 3-6,5-7 |
| ITF Turkey F18 | 2017/05/11 07:00 | Ryan James Storrie v Marsel Ilhan | 7-5,6-4 |
| ITF Turkey F18 | 2017/05/10 07:00 | Nikolic, Milos v Ryan James Storrie | 3-6,3-6 |
| ITF Turkey F18 | 2017/05/08 07:00 | Ryan James Storrie v Andrey Chepelev | 6-1,6-1 |
| ITF Turkey F18 | 2017/05/07 07:00 | Ryan James Storrie v Juan Bautista Otegui | 6-3,6-3 |
| Turkey F17, Singles Qualifying | 2017/04/29 07:00 | Juan Bautista Otegui v Ryan James Storrie | 6-1,6-2 |
| Egypt F12, Singles Qualifying | 2017/04/03 08:00 | Hirschmueller, Christian v Ryan James Storrie | 7-6,6-2 |
| Egypt F12, Singles Qualifying | 2017/04/02 08:00 | Lobak, Vladyslav v Ryan James Storrie | 4-6,2-6 |