Stadium: Court 7 Round: 44 Ground: Clay
| ITF M15 - Alkmaar | 2020/08/24 08:00 | Robert Strombachs v Guy Den Ouden | 6-3,6-1 |
| ITF M15 - Alkmaar | 2020/08/23 08:00 | Robert Strombachs v Stefan Loncar | 6-4,6-0 |
| German Premier League | 2020/08/15 11:00 | Altug Celikbilek v Robert Strombachs | 4-6,3-6 |
| German Premier League | 2020/08/14 14:50 | Robert Strombachs v Adrian Oetzbach | 6-0,6-4 |
| German Premier League | 2020/08/13 10:45 | Benjamin Lock v Robert Strombachs | 4-6,1-6 |
| German Premier League | 2020/08/12 17:15 | Jim Walder v Robert Strombachs | 6-7,2-6 |
| German Premier League | 2020/08/11 10:50 | Robert Strombachs v Yanki Erel | 1-6,2-6 |
| German Premier League | 2020/08/10 17:20 | Elmar Ejupovic v Robert Strombachs | 6-2,6-4 |
| ITF M15 - Alkmaar | 2020/08/24 08:30 | Raphael Collignon v Zachary Eisinga | 6-4,6-3 |
| ITF M15 - Alkmaar | 2020/08/23 08:30 | Jing L Weng v Raphael Collignon | 0-6,2-6 |