Stadium: Court 3 Round: 25 Ground: Carpet indoor
| ITF Czech Republic F5 Qual | 2018/07/02 09:30 | Bolardt, Antonin v Mammetgulyyev, Isa | 4-6,6-4,3-6 |
| ITF Czech Republic F5 Qual | 2018/07/01 08:00 | Adam Blecha v Mammetgulyyev, Isa | 6-7,6-3,3-6 |
| ITF Czech Republic F4 Qual | 2018/06/24 11:25 | Jirousek, Tomas v Mammetgulyyev, Isa | 4-6,6-1,6-3 |
| ITF Czech Republic F4 Qual | 2018/06/23 08:00 | Vrba, Daniel v Mammetgulyyev, Isa | 5-7,6-3,6-7 |
| ITF Hungary F4 Qual | 2018/06/10 11:00 | Mammetgulyyev, Isa v Botezan, George | 0-6,1-6 |
| ITF Hungary F4 Qual | 2018/06/09 11:00 | Nicholas Jovanovski v Mammetgulyyev, Isa | 1-6,4-6 |
| ITF Czech Republic F3 Qual | 2018/05/26 08:00 | Mammetgulyyev, Isa v Styler, Ondrej | 1-6,2-6 |
| ITF Hungary F3 | 2018/05/23 10:10 | Mammetgulyyev, Isa v Tepavac, Marko | 2-6,3-6 |
| ITF Czech Republic F4 | 2018/06/25 10:00 | David Poljak v Miladinovic, Marko | 6-4,1-6,2-6 |
| Challenger Poprad Tatry Qual | 2018/06/17 12:00 | Dancevic, Frank v David Poljak | 6-4,1-6,6-4 |
| Challenger Poprad Tatry Qual | 2018/06/16 16:25 | Goldsteiner, Peter v David Poljak | 0-6,7-6,4-6 |
| Challenger Prostejov Qual | 2018/06/03 14:20 | David Poljak v Evgeny Karlovskiy | 3-6,4-6 |
| Challenger Prostejov Qual | 2018/06/03 08:00 | David Poljak v Nema, Patrik | 2-6,6-2,6-4 |
| ITF Poland F3 | 2018/05/18 10:00 | Netuschil, Marvin v David Poljak | 6-1,6-0 |
| ITF Poland F3 | 2018/05/15 09:10 | Kiyamov, Timur v David Poljak | 5-7,6-2,1-6 |
| ITF Poland F2 | 2018/05/07 11:00 | David Poljak v Gelhardt, Luca | 4-6,2-6 |