Stadium: Court 3 Round: 46 Ground: Clay
| Challenger Poprad Tatry Qual | 2018/06/16 11:00 | Peter Goldsteiner v Samuel Puskar | 6-3,4-6,6-4 |
| Challenger Prostejov Qual | 2018/06/03 10:00 | Peter Goldsteiner v Jan Satral | 3-6,2-6 |
| ITF Bosnia and Herzegovina F3 | 2018/05/30 15:10 | Elmar Ejupovic v Peter Goldsteiner | 6-1,6-1 |
| ITF Sweden F3 | 2018/05/21 08:00 | Dan Added v Peter Goldsteiner | 6-4,6-3 |
| ITF Egypt F14 | 2018/04/19 08:00 | Evan Hoyt v Peter Goldsteiner | 7-6,6-4 |
| ITF Egypt F14 | 2018/04/18 11:45 | Peter Goldsteiner v Ivan Krivic | 7-5,6-4 |
| ITF Egypt F13 | 2018/04/11 12:15 | Peter Goldsteiner v Andres Artunedo Martinavarr | 1-6,3-6 |
| ITF Egypt F12 | 2018/04/04 10:30 | Peter Goldsteiner v Dominik Kellovsky | 5-7,3-6 |
| 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 Patrik Nema | 2-6,6-2,6-4 |
| ITF Poland F3 | 2018/05/18 10:00 | Marvin Netuschil v David Poljak | 6-1,6-0 |
| ITF Poland F3 | 2018/05/15 09:10 | Timur Kiyamov v David Poljak | 5-7,6-2,1-6 |
| ITF Poland F2 | 2018/05/07 11:00 | David Poljak v Luca Gelhardt | 4-6,2-6 |
| Challenger Ostrava Qual | 2018/04/28 10:05 | David Poljak v Patricio Heras | 3-6,3-6 |
| ITF Egypt F14 | 2018/04/22 08:00 | Alessandro Bega v David Poljak | 6-4,6-3 |
| ITF Egypt F14 | 2018/04/21 08:00 | David Poljak v Evan Hoyt | 6-4,6-4 |