Stadium: Court 1 Round: 44 Ground: Clay
| ITF Czech Republic F2 | 2018/05/22 08:00 | Kai Lemstra v Bart Van Den Berg | 3-6,3-6 |
| ITF Croatia F3 | 2018/03/22 11:30 | Kai Lemstra v Deni Zmak | 6-4,1-6,4-6 |
| ITF Croatia F3 | 2018/03/21 15:05 | Kai Lemstra v Xin Hu | 6-2,6-1 |
| ITF Croatia F3 | 2018/03/20 09:00 | Kai Lemstra v Marcell Bartakovics | 6-0,3-6,6-1 |
| ITF Croatia F3 | 2018/03/19 12:30 | Kai Lemstra v Edoardo Pompei | 6-1,2-6,7-6 |
| ITF Croatia F3 | 2018/03/19 09:00 | Kai Lemstra v Michelangelo Endrizzi | 6-3,6-4 |
| ITF Croatia F2 | 2018/03/14 09:00 | Kai Lemstra v Bruno Santanna | 3-6,3-6 |
| ITF Croatia F2 | 2018/03/13 08:00 | Kai Lemstra v Valentin Royer | 1-6,6-4,6-3 |
| ITF Czech Republic F3 Qual | 2018/05/27 09:00 | Dominik Recek v Benjamin Dhoe | 6-4,4-6,6-3 |
| ITF Czech Republic F3 Qual | 2018/05/26 09:00 | Dominik Recek v Jakub Beran | 6-2,6-3 |
| ITF Czech Republic F2 Qual | 2018/05/19 08:00 | Jiri Barnat v Dominik Recek | 7-6,6-7,7-5 |
| ITF Poland F2 | 2018/05/08 11:40 | Facundo Juarez v Dominik Recek | 6-3,6-4 |
| ITF Poland F2 | 2018/05/07 08:00 | Max Steinberger v Dominik Recek | 2-6,3-6 |
| ITF Poland F2 | 2018/05/06 07:30 | Dominik Recek v Grzegorz Panfil | 4-6,6-4,7-6 |
| ITF Poland F1 | 2018/04/30 07:00 | Dominik Recek v Piotr Grynkowski | 6-4,3-6,5-7 |
| ITF Poland F1 | 2018/04/29 07:00 | Piotr Matuszewski v Dominik Recek | 2-6,6-4,2-6 |