Stadium: Court 1 Round: 54 Ground: Clay
| ITF M15 Girona | 2021/10/17 10:30 | Matvey Minin v Arthur Van Der Kooij | 6-0,6-2 |
| ITF M15 Huy | 2021/08/22 13:00 | Arthur Van Der Kooij v Hazem Naw | 1-6,1-6 |
| ITF M15 Oldenzaal | 2021/08/15 14:00 | Dax Donders v Arthur Van Der Kooij | 6-1,6-4 |