Stadium: Svijany Court Round: 45
| Challenger Scheveningen Qual | 2018/07/16 10:00 | von Massow, George v Alejandro Davidovich Fokina | 3-6,2-6 |
| Challenger Scheveningen Qual | 2018/07/15 10:00 | Geoffrey Blancaneaux v von Massow, George | 6-3,0-6,1-6 |
| Challenger Scheveningen Qual | 2018/07/14 08:00 | Michiel de Krom v von Massow, George | 5-7,6-1,0-6 |
| Challenger Braunschweig Qual | 2018/07/07 12:30 | von Massow, George v Mariano Kestelboim | 4-6,6-2,3-6 |
| Challenger Braunschweig Qual | 2018/07/07 07:30 | von Massow, George v Sorgi, Joao Pedro | 7-5,3-6,6-2 |
| Challenger Marburg Qual | 2018/06/30 17:30 | Lindell, Christian v von Massow, George | 7-6,7-5 |
| ITF Netherlands F1 | 2018/06/26 16:00 | von Massow, George v Watson, Andrew | 6-7,6-7 |
| ITF Germany F4 | 2018/06/22 11:45 | von Massow, George v Dimitar Kuzmanov | 4-6,3-6 |
| Challenger Padova Qual | 2018/07/21 11:30 | Haider-Maurer, Andreas v Kanar, Jonathan | 7-5,4-6,6-7 |
| Challenger Marburg Qual | 2018/07/01 09:00 | Dima, Dragos v Haider-Maurer, Andreas | 6-4,6-3 |
| Challenger Marburg Qual | 2018/06/30 10:35 | Diarra, Gibril v Haider-Maurer, Andreas | 3-6,5-7 |
| Challenger Milan Qual | 2018/06/24 13:45 | Pedro Cachin v Haider-Maurer, Andreas | 3-6,4-6 |
| Challenger Milan Qual | 2018/06/23 12:50 | Almagro, Nicolas v Haider-Maurer, Andreas | 4-6,4-6 |
| Challenger Poprad Tatry | 2018/06/20 12:00 | Haider-Maurer, Andreas v Mohamed Safwat | 5-7,6-1,4-6 |
| Challenger Poprad Tatry | 2018/06/19 08:00 | Haider-Maurer, Andreas v Marek Jaloviec | 6-3,6-4 |
| Challenger Poprad Tatry Qual | 2018/06/17 12:50 | Haider-Maurer, Andreas v Rikl, Patrik | 7-6,7-6 |