Stadium: Ustron 3 Round: 26 Ground: Clay
| ITF Poland F4 | 2018/05/22 12:10 | Hajek, Petr v Kozielski, Lukasz | 6-3,6-1 |
| ITF Bosnia and Herzegovina F1 | 2018/05/17 09:45 | Hajek, Petr v Delic, Mate | 6-7,5-7 |
| ITF Bosnia and Herzegovina F1 | 2018/05/15 08:00 | Stergiou, Ioannis v Hajek, Petr | 6-1,3-6,6-7 |
| ITF Poland F2 | 2018/05/11 07:30 | Hajek, Petr v Meis, Pascal | 3-6,3-6 |
| ITF Poland F2 | 2018/05/09 08:00 | Hajek, Petr v Andrey Chepelev | 6-4,6-4 |
| ITF Poland F2 | 2018/05/07 11:00 | Samper-Montana, Jordi v Hajek, Petr | 1-6,4-6 |
| Egypt F15, Singles Qualifying | 2018/04/26 09:00 | Statzberger, Thomas v Hajek, Petr | 6-4,6-2 |
| Egypt F15, Singles Qualifying | 2018/04/25 09:20 | Hajek, Petr v Krivokuca, Neven | 6-4,6-4 |
| ITF Poland F4 | 2018/05/22 11:40 | David Pichler v Geens, Clement | 1-6,7-5,6-2 |
| ITF Poland F4 | 2018/05/21 11:00 | David Pichler v Tadyszak, Norbert | 6-1,6-1 |
| ITF Poland F3 | 2018/05/19 16:00 | Nejedly, Pavel v David Pichler | 6-4,6-4 |
| ITF Poland F3 | 2018/05/18 12:50 | Facundo Juarez v David Pichler | 2-6,2-6 |
| ITF Poland F3 | 2018/05/15 07:30 | Ratniuk, Maxim v David Pichler | 2-6,3-6 |
| Challenger Ostrava Qual | 2018/04/29 12:25 | David Pichler v Juan Pablo Ficovich | 1-6,6-7 |
| Challenger Ostrava Qual | 2018/04/28 13:20 | Gigounon, Germain v David Pichler | 3-6,6-7 |
| ITF Italy F9 | 2018/04/23 13:10 | Liska, Tomas v David Pichler | 7-5,6-7,6-4 |