| UTR Pro Tennis Series Amsterdam | 2021/12/08 10:00 | Michiel de Krom v Guy Den Heijer | 3-6,3-5 |
| UTR Pro Tennis Series Amsterdam | 2021/12/07 08:30 | Michiel de Krom v Rob Van Den Berg | 5-7,6-3,5-2 |
| UTR Pro Tennis Series Amsterdam | 2021/12/06 07:00 | Jip Van Assendelft v Michiel de Krom | 2-6,6-2,1-6 |
| UTR Pro Tennis Series Barcelona | 2021/11/28 09:30 | Michiel de Krom v Vlad Cristian Breazu | 6-1,4-6,6-1 |
| UTR Pro Tennis Series Barcelona | 2021/11/27 11:00 | Michiel de Krom v Alvaro Bueno Gil | 6-4,6-3 |
| UTR Pro Tennis Series Barcelona | 2021/11/26 09:30 | Michiel de Krom v Volodymyr Uzhylovskyi | 6-0,6-2 |
| UTR Pro Tennis Series Barcelona | 2021/11/25 14:30 | Michiel de Krom v Thomas Laurent | 3-6,3-5 |
| UTR Pro Tennis Series Barcelona | 2021/11/25 08:00 | Michiel de Krom v Euan Mcintosh | 6-0,6-4 |
| UTR Pro Tennis Series Amsterdam | 2021/12/09 09:00 | Rob Van Den Berg v Max Van Nunen | 7-5,5-7,6-4 |
| ITF M25 Eupen | 2021/09/05 13:30 | Max Van Nunen v Andre Megrabian | 7-5,6-7,11-13 |
| ITF M15 Huy | 2021/08/22 07:45 | Maik Steiner v Max Van Nunen | 6-3,6-3 |
| ITF M15 Oldenzaal | 2021/08/15 08:30 | Caspar Schuetze v Max Van Nunen | 6-2,4-6,10-8 |
| ITF M25 The Hague | 2021/06/28 09:40 | Guy Den Heijer v Max Van Nunen | 6-3,6-1 |
| ITF M25 The Hague | 2021/06/27 08:00 | Max Van Nunen v Jack Gibbens | 6-2,3-6,16-14 |
| ITF M15 Alkmaar | 2020/08/23 08:00 | Max Van Nunen v Simon Beaupain | 5-7,5-7 |
| ITF M15 Koksijde | 2019/08/13 10:40 | Lautaro Agustin Falabella v Max Van Nunen | 6-3,6-0 |