Stadium: Hard Court 5 Round: 27 Ground: Hardcourt outdoor
| ITF Turkey F1 | 2018/01/15 08:00 | Sieber, Marc v Quinzi, Gianluigi | 6-3,3-6,3-6 |
| ITF Turkey F2 | 2018/01/18 10:05 | Sieber, Marc v Nik Razborsek | 6-3,6-3 |
| ITF Turkey F2 | 2018/01/17 09:45 | Sieber, Marc v Glasspool, Lloyd | 6-2,6-0 |
| ITF Turkey F1 | 2018/01/15 08:00 | Sieber, Marc v Quinzi, Gianluigi | 6-3,3-6,3-6 |
| ITF Turkey F1 | 2018/01/14 13:00 | Ryan James Storrie v Sieber, Marc | 3-6,3-6 |
| ITF Turkey F1 | 2018/01/13 12:00 | Sieber, Marc v Gray, Jonathan | 6-2,6-4 |
| 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 F2 | 2018/01/18 09:25 | Sude, Jakob v Quinzi, Gianluigi | 2-6,5-7 |
| ITF Turkey F2 | 2018/01/17 08:55 | Benjamin Lock v Quinzi, Gianluigi | 0-6,1-6 |
| ITF Turkey F1 | 2018/01/15 08:00 | Sieber, Marc v Quinzi, Gianluigi | 6-3,3-6,3-6 |
| ITF Turkey F1 | 2018/01/14 12:00 | Altug Celikbilek v Quinzi, Gianluigi | 3-6,2-6 |
| ITF Turkey F1 | 2018/01/13 12:00 | Frunza, Nicolae v Quinzi, Gianluigi | 3-6,3-6 |
| ITF Turkey F1 | 2018/01/12 11:30 | Matteo Martineau v Quinzi, Gianluigi | 4-6,5-7 |
| ITF Turkey F1 | 2018/01/10 08:00 | Milan Drinic v Quinzi, Gianluigi | 2-6,2-6 |
| ATP Next Gen Finals | 2017/11/09 13:00 | Chung, Hyeon v Quinzi, Gianluigi | 1-4,4-1,4-2,3-4,4-3 |