| UTR Pro Tennis Series Amsterdam | 2021/12/08 08:30 | Deney Wassermann v Miko Wassermann | 7-6,4-6,6-2 |
| UTR Pro Tennis Series Amsterdam | 2021/12/07 08:30 | Deney Wassermann v Ryan Nijboer | 6-0,5-1 |
| UTR Pro Tennis Series Amsterdam | 2021/12/06 10:15 | Yan Sabanin v Deney Wassermann | 3-6,6-6 |
| ITF M15 Heraklion | 2021/11/22 08:00 | Deney Wassermann v Elmer Moller | 1-6,4-6 |
| ITF M15 Heraklion | 2021/11/15 08:00 | Deney Wassermann v Andrei Cuceu | 6-2,6-1 |
| UTR Pro Tennis Series Amsterdam | 2021/11/06 12:00 | Deney Wassermann v Guy Den Heijer | 2-6,5-6 |
| 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 | 2021/12/09 11:55 | Nathan De Veer v Niklas Koch | 6-1,6-5 |
| UTR Pro Tennis Series Amsterdam | 2021/12/07 10:00 | Yan Sabanin v Niklas Koch | 3-6,3-5 |
| UTR Pro Tennis Series Amsterdam | 2021/12/06 07:00 | Niklas Koch v Miko Wassermann | 6-4,6-7,3-6 |
| ITF M25 Eupen | 2021/09/06 11:00 | Buvaysar Gadamauri v Niklas Koch | 6-2,6-2 |
| ITF M25 Eupen | 2021/09/05 12:00 | Niklas Koch v Arslanbek Temirhanov | 6-1,6-2 |
| ITF M15 Manacor | 2020/01/12 11:30 | Billy Harris v Niklas Koch | 6-1,6-1 |
| ITF M15 Manacor | 2020/01/05 09:00 | Benjamin Pietri v Niklas Koch | 6-0,6-1 |
| ITF M15 Monastir | 2019/12/16 08:00 | Alessandro Coppini v Niklas Koch | 3-6,7-6,10-6 |