Stadium: Court 4 Round: 25 Ground: Clay
| ITF Turkey F20 Qual | 2018/05/21 09:15 | Socrates Leon Tsoronis v Moritz Thiem | 0-6,2-6 |
| ITF Turkey F20 Qual | 2018/05/20 07:30 | Moritz Thiem v Cihan Akay | 7-5,6-2 |
| ITF Turkey F20 Qual | 2018/05/19 07:30 | Bulut Ozcelik v Moritz Thiem | 2-6,4-6 |
| ITF Tunisia F18 | 2018/05/08 09:00 | Moritz Thiem v Geronimo E Busleiman | 4-6,6-7 |
| ITF Tunisia F18 | 2018/05/05 09:00 | Moritz Thiem v Gauthier Cappello | 6-1,6-3 |
| ITF Croatia F3 | 2018/03/19 14:00 | Ivan Sabanov v Moritz Thiem | 6-2,6-0 |
| ITF Croatia F3 | 2018/03/19 11:00 | Moritz Thiem v Lorenzo Di Maro | 6-2,6-4 |
| ITF Turkey F8 | 2018/02/25 07:30 | Moritz Thiem v Sergio Barranco | 3-6,4-6 |
| 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 |
| ITF Poland F1 | 2018/05/01 09:45 | Maciej Smola v Luca Gelhardt | 6-4,4-6,0-6 |
| Challenger Lille Qual | 2018/03/17 17:45 | Gabor Borsos v Luca Gelhardt | 6-4,6-0 |
| ITF Greece F2 | 2018/03/05 07:30 | Luca Gelhardt v Corrado Summaria | 4-6,3-6 |
| ITF Greece F2 | 2018/03/04 08:00 | Luca Gelhardt v Michalis Sakellaridis | 6-1,7-5 |