Round: 25 Ground: Hardcourt outdoor
| ITF Bulgaria F1 | 2018/05/13 07:00 | Zlatan Palazov v Christos Keisidis | 5-7,0-6 |
| 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 Egypt F17 | 2018/05/09 09:25 | Alexander Igoshin v Neven Krivokuca | 4-6,6-4,3-6 |
| ITF Egypt F16 | 2018/05/04 09:00 | Alexander Igoshin v Jordan Correia | 3-6,6-7 |
| ITF Egypt F16 | 2018/05/03 07:30 | Alexander Igoshin v Maxence Broville | 5-7,6-2,6-4 |
| ITF Egypt F15 | 2018/04/24 08:00 | Dusty H. Boyer v Alexander Igoshin | 6-4,3-6,7-5 |
| Challenger Guadalajara Qual | 2018/04/15 16:00 | Alexander Igoshin v Gonzalo Escobar | 5-7,1-6 |
| Challenger Guadalajara Qual | 2018/04/14 18:35 | Alexander Igoshin v Federico Zeballos | 3-6,6-4,6-2 |
| Challenger Mexico City Qual | 2018/04/07 16:00 | Alexander Igoshin v Franco Agamenone | 4-6,0-6 |
| Challenger Panama City Qual | 2018/03/31 17:00 | Alexander Igoshin v Franco Agamenone | 2-6,3-6 |