Stadium: C Round: 46
| Challenger Liberec Qual | 2018/07/28 14:00 | George Von Massow v Andreas Haider-Maurer | 3-6,6-3,6-2 |
| Challenger Pullach Qual | 2018/08/04 13:45 | Andreas Haider-Maurer v Sebastian Fanselow | 6-3,7-5 |
| Challenger Liberec Qual | 2018/07/28 14:00 | George Von Massow v Andreas Haider-Maurer | 3-6,6-3,6-2 |
| Challenger Padova Qual | 2018/07/21 11:30 | Andreas Haider-Maurer v Jonathan Kanar | 7-5,4-6,6-7 |
| Challenger Marburg Qual | 2018/07/01 09:00 | Dragos Dima v Andreas Haider-Maurer | 6-4,6-3 |
| Challenger Marburg Qual | 2018/06/30 10:35 | Gibril Diarra v Andreas Haider-Maurer | 3-6,5-7 |
| Challenger Milan Qual | 2018/06/24 13:45 | Pedro Cachin v Andreas Haider-Maurer | 3-6,4-6 |
| Challenger Milan Qual | 2018/06/23 12:50 | Nicolas Almagro v Andreas Haider-Maurer | 4-6,4-6 |
| Challenger Poprad Tatry | 2018/06/20 12:00 | Andreas Haider-Maurer v Mohamed Safwat | 5-7,6-1,4-6 |
| Challenger Pullach Qual | 2018/08/04 13:05 | George Von Massow v Marek Jaloviec | 6-4,4-6,6-3 |
| Challenger Liberec Qual | 2018/07/29 12:00 | David Poljak v George Von Massow | 7-6,7-6 |
| Challenger Liberec Qual | 2018/07/28 14:00 | George Von Massow v Andreas Haider-Maurer | 3-6,6-3,6-2 |
| Challenger Scheveningen Qual | 2018/07/16 10:00 | George Von Massow v Alejandro Davidovich Fokina | 3-6,2-6 |
| Challenger Scheveningen Qual | 2018/07/15 10:00 | Geoffrey Blancaneaux v George Von Massow | 6-3,0-6,1-6 |
| Challenger Scheveningen Qual | 2018/07/14 08:00 | Michiel de Krom v George Von Massow | 5-7,6-1,0-6 |
| Challenger Braunschweig Qual | 2018/07/07 12:30 | George Von Massow v Mariano Kestelboim | 4-6,6-2,3-6 |
| Challenger Braunschweig Qual | 2018/07/07 07:30 | George Von Massow v Joao Pedro Sorgi | 7-5,3-6,6-2 |