Stadium: Court 3 Round: 25 Ground: Clay
| ITF M15 Huy | 2021/08/29 13:00 | Gauthier Onclin v Guy Den Ouden | 6-4,5-7,1-6 |
| ITF M15 Huy | 2021/08/28 11:00 | Raphael Collignon v Guy Den Ouden | 3-6,4-6 |
| ITF M15 Huy | 2021/08/27 11:00 | Benjamin Dhoe v Guy Den Ouden | 2-6,2-6 |
| ITF M15 Huy | 2021/08/26 11:45 | Guy Den Ouden v Mathieu Perchicot | 7-5,6-4 |
| ITF M15 Huy | 2021/08/24 09:30 | Guy Den Ouden v Alessandro Ingarao | 6-1,6-4 |
| ITF M15 Oldenzaal | 2021/08/19 11:00 | Guy Den Ouden v Lorenzo Bocchi | 3-6,0-6 |
| ITF M15 Oldenzaal | 2021/08/18 15:35 | Mattia Bellucci v Guy Den Ouden | 3-6,3-6 |
| ITF M15 Frederiksberg | 2021/08/03 10:55 | Guy Den Ouden v Sandro Kopp | 4-6,4-6 |
| ITF M15 Allershausen | 2021/08/31 08:00 | Hazem Naw v Amaury Raynel | 6-2,6-1 |
| ITF M15 Huy | 2021/08/23 11:30 | Charles Minc v Hazem Naw | 6-4,6-1 |
| ITF M15 Huy | 2021/08/22 13:00 | Arthur Van Der Kooij v Hazem Naw | 1-6,1-6 |
| UTR Pro Tennis Series Mulheim | 2021/07/31 08:30 | Hazem Naw v Tim Sandkaulen | 6-4,7-6 |
| UTR Pro Tennis Series Mulheim | 2021/07/30 13:30 | Hazem Naw v John Sperle | 6-4,6-2 |
| UTR Pro Tennis Series Mulheim | 2021/07/30 07:00 | Stefan Peter Hampe v Hazem Naw | 3-6,5-7 |
| UTR Pro Tennis Series Mulheim | 2021/07/29 10:00 | Francesco Vilardo v Hazem Naw | 6-2,6-1 |
| UTR Pro Tennis Series Mulheim | 2021/07/27 08:00 | Jim Hendrikx v Hazem Naw | 0-6,2-6 |