Round: 25 Ground: Clay
| Sri Lanka F3, Singles Qualifying | 2018/06/28 04:00 | Manish Sureshkumar v Dembek, Michal | 6-3,6-3 |
| Sri Lanka F3, Singles Qualifying | 2018/06/27 04:00 | Bendre, Anvit v Dembek, Michal | 2-6,2-6 |
| Sri Lanka F3, Singles Qualifying | 2018/06/26 06:30 | Johansson, Niklas v Dembek, Michal | 7-5,3-6,3-6 |
| Challenger Poprad Tatry Qual | 2018/06/16 09:10 | Dembek, Michal v Statzberger, Thomas | 4-6,6-7 |
| Poznan, Poland | 2018/06/06 10:00 | Dembek, Michal v Donati, Matteo | 6-7,3-6 |
| ITF Poland F4 | 2018/05/24 10:20 | Nejedly, Pavel v Dembek, Michal | 6-4,6-2 |
| ITF Poland F4 | 2018/05/22 10:25 | Dembek, Michal v Andres F Canovas | 6-3,6-4 |
| ITF Poland F4 | 2018/05/21 07:00 | Dembek, Michal v Kolasinski, Filip | 6-3,6-2 |
| ITF Poland F3 | 2018/05/15 07:30 | Ratniuk, Maxim v David Pichler | 2-6,3-6 |
| ITF Poland F2 | 2018/05/13 08:00 | Ratniuk, Maxim v Podzus, Martins | 3-6,1-6 |
| ITF Poland F2 | 2018/05/11 09:30 | Gray, Jonathan v Ratniuk, Maxim | 0-6,1-6 |
| ITF Poland F2 | 2018/05/08 08:00 | Ratniuk, Maxim v Manole, Alexandru Vasile | 7-6,6-1 |
| Turkey F15, Singles Qualifying | 2018/04/16 07:30 | Ratniuk, Maxim v Taylor, Sam | 6-4,6-7,1-6 |
| Turkey F15, Singles Qualifying | 2018/04/14 07:30 | Ratniuk, Maxim v Sami Ben Abdennibi | 6-0,6-1 |
| Turkey F14, Singles Qualifying | 2018/04/10 07:30 | Genaro Alberto Olivieri v Ratniuk, Maxim | 7-6,6-3 |
| Turkey F14, Singles Qualifying | 2018/04/09 08:30 | Ratniuk, Maxim v Felipe Meligeni Rodrigues Alves | 6-2,6-3 |