Stadium: Herbie Court Round: 54 Ground: Clay
| ITF - Marburg M25 | 2021/07/05 08:00 | Guy Den Heijer v Maximilian Homberg | 6-7,6-2,10-8 |
| ITF - Haga M25 | 2021/06/29 15:00 | Dayne Kelly v Guy Den Heijer | 6-1,6-4 |
| ITF - Haga M25 | 2021/06/28 09:40 | Guy Den Heijer v Max Van Nunen | 6-3,6-1 |
| ITF - Haga M25 | 2021/06/27 08:00 | Guy Den Heijer v Jing L Weng | 6-3,6-4 |
| ITF - Alkmaar M25 | 2021/06/23 09:00 | Kaichi Uchida v Guy Den Heijer | 7-6,6-3 |
| ITF - Alkmaar M25 | 2021/06/21 18:00 | Vladimir Ivanov v Guy Den Heijer | 3-6,6-7 |
| ITF - Alkmaar M25 | 2021/06/20 17:00 | Alec Deckers v Guy Den Heijer | 3-6,7-6,4-10 |
| ITF - Vic M25 | 2021/05/16 08:00 | Mateus Alves v Guy Den Heijer | 6-2,6-3 |
| ITF - Marburg M25 | 2021/07/05 08:00 | Florian Broska v Guillaume Dermiens | 7-5,6-4 |
| Tennis Point Exhibition Series | 2020/08/01 11:30 | Florian Broska v Daniel Vishnick | 6-2,6-0 |
| Tennis Point Exhibition Series | 2020/07/17 17:00 | Igor Sijsling v Florian Broska | 6-4,5-7,6-3 |
| Tennis Point Exhibition Series | 2020/07/16 09:20 | Julien Penzlin v Florian Broska | 2-6,2-6 |
| Tennis Point Exhibition Series | 2020/07/15 11:10 | Sebastian Mortier v Florian Broska | 2-6,1-6 |
| Tennis Point Exhibition Series | 2020/07/14 15:05 | Dominik Fritsche v Florian Broska | 2-6,2-6 |
| Tennis Point Exhibition Series | 2020/07/11 11:00 | Florian Broska v Daniel Vishnick | 6-1,6-4 |
| Tennis Point Exhibition Series | 2020/07/10 11:00 | Constantin Schmitz v Florian Broska | 4-6,2-6 |