Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Oldenzaal | 2021/08/20 16:15 | Daniel De Jonge v Lorenzo Bocchi | 2-6,5-7 |
| ITF M15 Oldenzaal | 2021/08/19 11:20 | Daniel De Jonge v Petros Tsitsipas | 6-2,6-2 |
| ITF M15 Oldenzaal | 2021/08/18 14:30 | Kai Wehnelt v Daniel De Jonge | 5-7,6-1,6-7 |
| ITF M15 Gdynia | 2021/08/13 09:00 | Roman Andres Burruchaga v Daniel De Jonge | 7-6,6-1 |
| ITF M15 Gdynia | 2021/08/12 09:25 | Gilbert S K Junior v Daniel De Jonge | 5-7,1-6 |
| ITF M15 Gdynia | 2021/08/11 08:00 | Daniel De Jonge v Markus Eriksson | 6-4,6-1 |
| ITF M15 Gdynia | 2021/08/10 08:00 | Juliusz Bienkiewicz v Daniel De Jonge | 2-6,6-7 |
| ITF M15 Gdynia | 2021/08/09 08:00 | Sergo Sikharulidze v Daniel De Jonge | 3-6,2-6 |
| ITF M25 Eupen | 2021/09/11 10:45 | Arthur Fery v Matteo Arnaldi | 7-5,2-6,5-7 |
| ITF M25 Eupen | 2021/09/10 08:00 | Arthur Fery v Romain Faucon | 7-6,6-2 |
| ITF M25 Eupen | 2021/09/09 07:30 | Arthur Fery v Buvaysar Gadamauri | 7-5,6-1 |
| ITF M25 Eupen | 2021/09/08 07:30 | Hernan Casanova v Arthur Fery | 6-2,3-6,2-6 |
| ITF M25 Eupen | 2021/09/07 09:25 | Arthur Fery v Marcel Hornung | 6-2,6-1 |
| ITF M25 Eupen | 2021/09/06 12:05 | Arthur Fery v Jimmy Yang | 6-1,6-4 |
| ITF M15 Huy | 2021/08/27 11:00 | Raphael Collignon v Arthur Fery | 6-3,6-3 |
| ITF M15 Huy | 2021/08/26 10:55 | Arthur Fery v Arthur Reymond | 6-4,6-2 |