Stadium: Court 7 Round: 25 Ground: Clay
| ITF Bulgaria F1 | 2018/05/17 07:00 | Markos Kalovelonis v Vasil Kirkov | 7-6,4-6,3-6 |
| ITF Bulgaria F1 | 2018/05/16 08:20 | Markos Kalovelonis v Daniil Zarichanskiy | 6-1,6-3 |
| ITF Uzbekistan F2 | 2018/04/25 09:00 | Markos Kalovelonis v Dzmitry Zhyrmont | 5-7,3-6 |
| ITF Uzbekistan F2 | 2018/04/24 14:45 | Shonigmatjon Shofayziyev v Markos Kalovelonis | 1-6,5-7 |
| ITF Kazakhstan F4 | 2018/04/18 06:30 | Markos Kalovelonis v Teymuraz Gabashvili | 4-6,3-6 |
| ITF Kazakhstan F4 | 2018/04/17 05:50 | Markos Kalovelonis v Matvey Khomentovskiy | 7-6,7-6 |
| Davis Cup | 2018/04/06 10:15 | Ljubomir Celebic v Markos Kalovelonis | 6-2,6-1 |
| Davis Cup | 2018/04/04 09:10 | Martins Podzus v Markos Kalovelonis | 3-6,4-6 |
| ITF Hungary F3 | 2018/05/23 08:00 | Mick Veldheer v Bogdan Bobrov | 6-1,0-6,3-6 |
| ITF Hungary F3 | 2018/05/21 12:00 | Marcell Bartakovics v Bogdan Bobrov | 1-6,2-6 |
| ITF Hungary F2 | 2018/05/14 11:00 | Tomas Liska v Bogdan Bobrov | 6-1,6-4 |
| ITF Hungary F1 | 2018/05/09 10:25 | Bogdan Bobrov v Kenneth Raisma | 6-7,5-7 |
| ITF Hungary F1 | 2018/05/08 08:00 | Bogdan Bobrov v Levente Godry | 4-6,6-0,6-0 |
| ITF Kazakhstan F5 | 2018/04/25 05:30 | Matvey Minin v Bogdan Bobrov | 6-3,7-6 |
| ITF Kazakhstan F5 | 2018/04/24 05:55 | Timur Khabibulin v Bogdan Bobrov | 2-6,1-6 |
| ITF Kazakhstan F4 | 2018/04/19 04:00 | Grigoriy Lomakin v Bogdan Bobrov | 7-6,6-7,7-6 |