Stadium: Van Mossel Kia Court Round: 19 Ground: Clay
| Challenger Amersfoort | 2021/07/11 10:00 | Alvaro Lopez San Martin v Bart Van Den Berg | 6-2,6-3 |
| ITF M25 Marburg | 2021/07/09 09:00 | Alvaro Lopez San Martin v Marko Tepavac | 5-7,3-6 |
| ITF M25 Marburg | 2021/07/08 08:50 | Alvaro Lopez San Martin v Sidane Pontjodikromo | 2-6,6-3,6-3 |
| ITF M25 Marburg | 2021/07/06 16:00 | Alvaro Lopez San Martin v Gauthier Onclin | 6-3,6-3 |
| ITF M25 Grasse | 2021/06/20 12:50 | Alvaro Lopez San Martin v Valentin Royer | 7-6,7-5 |
| ITF M25 Grasse | 2021/06/18 08:00 | Alvaro Lopez San Martin v Emilien Voisin | 6-3,4-6,6-2 |
| ITF M25 Grasse | 2021/06/17 08:00 | Markus Eriksson v Alvaro Lopez San Martin | 2-6,1-6 |
| ITF M25 Grasse | 2021/06/16 10:00 | Alvaro Lopez San Martin v Jean Thirouin | 6-1,6-1 |
| Challenger Amersfoort | 2021/07/11 11:40 | Deney Wassermann v Gauthier Onclin | 7-5,6-3 |
| ITF M25 Marburg | 2021/07/05 14:10 | Deney Wassermann v Tim Handel | 6-7,6-7 |
| ITF M25 Hága | 2021/06/27 08:00 | Deney Wassermann v Sidane Pontjodikromo | 4-6,3-6 |
| ITF M25 Alkmaar | 2021/06/24 09:00 | Deney Wassermann v Marvin Moeller | 6-7,7-6,3-6 |
| ITF M25 Alkmaar | 2021/06/23 10:35 | Deney Wassermann v Guy Den Ouden | 7-6,7-5 |
| ITF M25 Alkmaar | 2021/06/21 16:00 | Kai Wehnelt v Deney Wassermann | 5-7,6-3,12-10 |
| ITF M25 Alkmaar | 2021/06/20 18:00 | Deney Wassermann v Niels Visker | 7-6,6-7,10-6 |
| ITF M15 Antalya | 2021/04/05 07:00 | Deney Wassermann v Sidane Pontjodikromo | 4-6,2-6 |