| UTR Pro Tennis Series - Mulheim | 2021/09/20 12:30 | Buvaysar Gadamauri v Thijmen Loof | 6-1,6-4 |
| ITF - M25 Eupen | 2021/09/09 07:30 | Arthur Fery v Buvaysar Gadamauri | 7-5,6-1 |
| ITF - M25 Eupen | 2021/09/08 09:50 | Buvaysar Gadamauri v Martin Katz | 6-3,6-3 |
| ITF - M25 Eupen | 2021/09/07 07:30 | Buvaysar Gadamauri v Mateo Nicolas Martinez | 6-4,7-6 |
| ITF - M25 Eupen | 2021/09/06 11:00 | Buvaysar Gadamauri v Niklas Koch | 6-2,6-2 |
| ITF - M15 Huy | 2021/08/25 13:10 | Gauthier Onclin v Buvaysar Gadamauri | 6-4,6-1 |
| ITF - M15 Huy | 2021/08/24 08:00 | Buvaysar Gadamauri v Charles Minc | 6-1,6-1 |
| ITF - M15 Huy | 2021/08/23 10:00 | Buvaysar Gadamauri v Alexis Boureau | 6-3,6-3 |
| UTR Pro Tennis Series - Mulheim | 2021/09/20 12:30 | Guy Den Heijer v Lawrence Bataljin | 6-0,5-1 |
| ITF - M25 Eupen | 2021/09/09 09:00 | Romain Faucon v Guy Den Heijer | 6-4,6-4 |
| ITF - M25 Eupen | 2021/09/08 07:30 | Guy Den Heijer v Kai Wehnelt | 3-6,6-3,6-2 |
| ITF - M25 Eupen | 2021/09/07 10:05 | Guy Den Heijer v Tom Gentzsch | 6-3,6-4 |
| ITF - M25 Eupen | 2021/09/06 14:45 | Guy Den Heijer v Yannick Lenaerts | 6-1,6-0 |
| ITF - M15 Oldenzaal | 2021/08/21 10:10 | Guy Den Heijer v Damien Wenger | 4-6,2-6 |
| ITF - M15 Oldenzaal | 2021/08/20 16:35 | Guy Den Heijer v Alexander Hoogmartens | 6-3,6-7,6-4 |
| ITF - M15 Oldenzaal | 2021/08/20 10:20 | Sander Jong v Guy Den Heijer | 5-7,7-5,4-6 |