Round: 25 Ground: Hardcourt outdoor
| ITF Serbia F8 Qual | 2016/09/17 07:00 | Shinnosuke Hiramatsu v Christos Keisidis | 6-4,6-3 |
| ITF Serbia F7 Qual | 2016/09/11 10:00 | Borna Gojo v Christos Keisidis | 6-2,6-2 |
| ITF Serbia F7 Qual | 2016/09/10 13:30 | Christos Keisidis v Nenad Vladusic | 6-4,6-2 |
| ITF Serbia F5 | 2016/08/17 15:25 | Tomislav Brkic v Christos Keisidis | 6-1,4-6,6-2 |
| ITF Serbia F5 Qual | 2016/08/15 09:05 | Ivan Sabanov v Christos Keisidis | 4-6,3-6 |
| ITF Serbia F4 | 2016/08/10 12:55 | Christos Keisidis v Goran Markovic | 4-6,6-4,0-6 |
| ITF Serbia F4 Qual | 2016/08/08 07:30 | Darko Bojanovic v Christos Keisidis | 3-6,5-7 |
| ITF Serbia F4 Qual | 2016/08/07 14:00 | Radoslav Shandarov v Christos Keisidis | 1-6,2-6 |
| ITF Russia F1 | 2018/02/27 07:45 | Alexander Igoshin v Philipp Klimov | 6-3,4-6,6-4 |
| ITF Kazakhstan F2 | 2018/02/22 04:00 | Nikola Milojevic v Alexander Igoshin | 6-4,6-1 |
| ITF Kazakhstan F2 | 2018/02/21 04:00 | Alexander Igoshin v Igor Smilansky | 6-4,3-6,6-4 |
| ITF Kazakhstan F2 | 2018/02/19 04:00 | Roman Khassanov v Alexander Igoshin | 4-6,4-6 |
| ITF Spain F4 | 2018/02/05 09:00 | Alexander Igoshin v Matvey Khomentovskiy | 6-1,3-6,3-6 |
| ITF Spain F4 | 2018/02/04 09:00 | Alexander Igoshin v Aloys J W Van Baal | 6-1,7-5 |
| ITF Spain F4 | 2018/02/03 12:00 | Alexander Igoshin v Tom Clavel | 6-0,6-4 |
| ITF Spain F3 | 2018/01/31 09:30 | Alexander Igoshin v Pascal Meis | 3-6,6-4,4-6 |