| UTR Pro Tennis Series Amsterdam | 2021/11/05 12:00 | Michiel de Krom v Deney Wassermann | 2-6,3-6 |
| UTR Pro Tennis Series Amsterdam | 2021/11/04 10:30 | Edison Ambarzumjan v Deney Wassermann | 4-6,4-6 |
| UTR Pro Tennis Series Amsterdam | 2021/11/02 09:00 | Ivan Denisov v Deney Wassermann | 6-2,4-6,3-6 |
| UTR Pro Tennis Series Amsterdam | 2021/11/01 09:00 | Deney Wassermann v Rik Muller | 6-0,5-2 |
| ITF M15 Ulcinj | 2021/09/13 13:00 | Daisuke Sumizawa v Deney Wassermann | 6-4,7-6 |
| ITF M15 Ulcinj | 2021/09/13 08:00 | Eric Morris v Deney Wassermann | 4-6,6-3,8-10 |
| ITF M15 Huy | 2021/08/27 13:00 | Alexis Gautier v Deney Wassermann | 6-1,6-4 |
| ITF M15 Huy | 2021/08/26 14:10 | Deney Wassermann v Marvin Netuschil | 6-3,6-2 |
| UTR Pro Tennis Series Amsterdam | 2021/11/05 13:30 | Guy Den Heijer v Johann Willems | 7-6,2-6,6-4 |
| UTR Pro Tennis Series Amsterdam | 2021/11/03 10:30 | Guy Den Heijer v Lawrence Bataljin | 6-0,6-3 |
| UTR Pro Tennis Series Amsterdam | 2021/11/02 10:30 | Guy Den Heijer v Jip Van Assendelft | 6-4,5-2 |
| UTR Pro Tennis Series Amsterdam | 2021/11/01 13:30 | Miko Wassermann v Guy Den Heijer | 2-6,5-7 |
| ITF M15 Girona | 2021/10/19 08:00 | Guy Den Heijer v Vladislav Ivanov | 6-4,6-3 |
| ITF M15 Girona | 2021/10/18 08:00 | Guy Den Heijer v Samir Hamza Reguig | 6-2,6-1 |
| ITF M15 Girona | 2021/10/17 08:00 | Guy Den Heijer v Ervin H Eminefendic | 6-3,6-1 |
| ITF M15 Platja D'Aro | 2021/10/14 14:15 | Jose Fco. Vidal Azorin v Guy Den Heijer | 7-6,1-6,6-2 |