| UTR Pro Tennis Series Amsterdam | 2021/11/03 10:30 | Michiel de Krom v Rik Muller | 6-4,5-1 |
| UTR Pro Tennis Series Amsterdam | 2021/11/02 10:30 | Michiel de Krom v Edison Ambarzumjan | 6-1,6-1 |
| UTR Pro Tennis Series Amsterdam | 2021/11/01 09:00 | Ivan Denisov v Michiel de Krom | 3-6,3-5 |
| ITF M15 Almada | 2021/07/07 08:30 | Michiel de Krom v Duarte Vale | 3-6,3-6 |
| ITF M25 The Hague | 2021/06/28 08:45 | Carlos Lopez Montagud v Michiel de Krom | 6-1,6-3 |
| ITF M25 The Hague | 2021/06/27 08:00 | Tom Clavel v Michiel de Krom | 3-6,5-7 |
| ITF M25 Alkmaar | 2021/06/21 17:30 | Marvin Moeller v Michiel de Krom | 2-6,6-4,10-3 |
| ITF M25 Alkmaar | 2021/06/20 17:00 | Constantin Bittoun Kouzmine v Michiel de Krom | 3-6,3-6 |
| 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 |
| ITF M15 Huy | 2021/08/24 15:35 | Martin Katz v Deney Wassermann | 4-6,1-6 |