Stadium: Court 3 Round: 25 Ground: Clay
| ITF Tunisia F22 | 2018/06/06 13:00 | Luca Gelhardt v Geronimo E Busleiman | 4-6,2-6 |
| ITF Turkey F21 | 2018/05/30 09:00 | Luca Gelhardt v Marsel Ilhan | 6-3,3-6,4-6 |
| ITF Turkey F20 Qual | 2018/05/24 09:15 | Luca Gelhardt v Nicolas Alberto Arreche | 3-6,3-6 |
| ITF Turkey F20 | 2018/05/22 07:30 | Moritz Thiem v Luca Gelhardt | 3-6,0-6 |
| ITF Turkey F19 | 2018/05/16 07:00 | Luca Gelhardt v Juan Pablo Varillas | 6-7,3-6 |
| ITF Poland F2 | 2018/05/09 09:40 | Luca Gelhardt v Marvin Netuschil | 5-7,5-7 |
| ITF Poland F2 | 2018/05/07 11:00 | David Poljak v Luca Gelhardt | 4-6,2-6 |
| ITF Poland F1 | 2018/05/03 09:00 | Luca Gelhardt v Pascal Meis | 3-6,3-6 |
| Challenger Poznan Qual | 2018/06/04 09:25 | Lukas Rosol v Clement Geens | 4-6,2-6 |
| Challenger Poznan Qual | 2018/06/03 14:15 | Clement Geens v Joao Pedro Sorgi | 0-6,6-4,6-2 |
| ITF Poland F4 | 2018/05/22 11:40 | David Pichler v Clement Geens | 1-6,7-5,6-2 |
| Challenger Heilbronn Qual | 2018/05/14 10:00 | Bernabe Zapata Miralles v Clement Geens | 6-3,6-0 |
| Challenger Heilbronn Qual | 2018/05/13 10:35 | Clement Geens v Tobias Simon | 7-5,3-6,6-3 |
| Challenger Heilbronn Qual | 2018/05/12 09:00 | Jurij Rodionov v Clement Geens | 3-6,7-6,1-6 |
| Challenger Aix en Provence Qual | 2018/05/05 08:30 | Clement Geens v Guillermo Duran | 3-6,2-6 |
| ITF Turkey F14 | 2018/04/11 10:00 | Clement Geens v Milan Drinic | 0-6,2-6 |