Round: 29 Ground: Hardcourt outdoor
| Turkey F15, Singles Qualifying | 2017/04/20 07:00 | Dimitar Kuzmanov v Sieber, Marc | 4-6,6-4,6-2 |
| ITF Turkey F11 | 2015/03/21 08:00 | Sieber, Marc v Dimitar Kuzmanov | 2-6,6-4,6-0 |
| ITF Turkey F7 | 2015/02/22 09:00 | Sieber, Marc v Dimitar Kuzmanov | 5-7,3-6 |