| UTR Pro Tennis Series Amsterdam | 2021/11/06 10:30 | Max Houkes v Miko Wassermann | 6-4,6-3 |
| UTR Pro Tennis Series Amsterdam | 2021/11/05 12:00 | Teun Rozenberg v Max Houkes | 7-6,2-6,3-6 |
| UTR Pro Tennis Series Amsterdam | 2021/11/04 09:00 | Nathan De Veer v Max Houkes | 0-6,6-4,6-3 |
| UTR Pro Tennis Series Amsterdam | 2021/11/03 13:30 | Maxence Broville v Max Houkes | 6-3,6-4 |
| UTR Pro Tennis Series Amsterdam | 2021/11/01 12:00 | Thorsten Sollie v Max Houkes | 2-6,7-5,0-5 |
| ITF M15 Platja D'Aro | 2021/10/14 09:00 | Max Houkes v Max Alcala Gurri | 6-7,7-5,4-6 |
| ITF M15 Platja D'Aro | 2021/10/13 10:30 | David Jorda Sanchis v Max Houkes | 4-6,4-6 |
| ITF M15 Platja D'Aro | 2021/10/12 08:30 | Max Houkes v Zakhar Trapeznikov | 6-3,6-4 |
| UTR Pro Tennis Series Amsterdam | 2021/11/06 10:30 | Amadatus Admiraal v Rik Muller | 7-6,5-2 |
| UTR Pro Tennis Series Amsterdam | 2021/11/05 13:30 | Amadatus Admiraal v Benjamin Dhoe | 3-6,3-5 |
| UTR Pro Tennis Series Amsterdam | 2021/11/04 13:30 | Amadatus Admiraal v Mikhail Minakov | 3-6,4-5 |
| UTR Pro Tennis Series Amsterdam | 2021/11/03 12:00 | Tom Clavel v Amadatus Admiraal | 6-3,6-7,2-5 |
| UTR Pro Tennis Series Amsterdam | 2021/11/02 13:30 | Sem Verbeek v Amadatus Admiraal | 6-2,6-2 |
| ITF M15 Oldenzaal | 2021/08/15 14:00 | Giles Hussey v Amadatus Admiraal | 6-3,6-2 |
| ITF M25 Alkmaar | 2021/06/20 11:00 | Herman Meeuwes Mattheo Knoop v Amadatus Admiraal | 4-6,6-3,10-8 |
| ITF M15 Bad Salzdetfurth | 2019/10/08 11:00 | Amadatus Admiraal v Evan Furness | 3-6,3-6 |