Stadium: C Round: 46
| Challenger Liberec Qual | 2018/07/28 14:00 | von Massow, George v Haider-Maurer, Andreas | 3-6,6-3,6-2 |
| Challenger Pullach Qual | 2018/08/04 13:45 | Haider-Maurer, Andreas v Sebastian Fanselow | 6-3,7-5 |
| Challenger Liberec Qual | 2018/07/28 14:00 | von Massow, George v Haider-Maurer, Andreas | 3-6,6-3,6-2 |
| 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 Pullach Qual | 2018/08/04 13:05 | von Massow, George v Marek Jaloviec | 6-4,4-6,6-3 |
| Challenger Liberec Qual | 2018/07/29 12:00 | David Poljak v von Massow, George | 7-6,7-6 |
| Challenger Liberec Qual | 2018/07/28 14:00 | von Massow, George v Haider-Maurer, Andreas | 3-6,6-3,6-2 |
| 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 |