| UTR Pro Tennis Series Amsterdam | 2021/12/06 08:30 | Hansen, Christian v Roland Stuurman | 6-2,6-2 |
| UTR Pro Tennis Series Mulheim | 2021/10/17 08:30 | Willems, Johann v Hansen, Christian | 6-1,5-1 |
| UTR Pro Tennis Series Mulheim | 2021/10/16 09:30 | Hansen, Christian v Sidane Pontjodikromo | 6-3,3-6,5-2 |
| UTR Pro Tennis Series Mulheim | 2021/10/15 07:00 | Tom Gentzsch v Hansen, Christian | 4-6,1-6 |
| UTR Pro Tennis Series Mulheim | 2021/10/14 07:00 | Verstegen, Quin v Hansen, Christian | 3-6,6-3,3-6 |
| UTR Pro Tennis Series Mulheim | 2021/10/13 11:30 | Filip Duda v Hansen, Christian | 6-2,2-5 |
| UTR Pro Tennis Series Mulheim | 2021/10/11 08:30 | Alen Moritz Hodzic v Hansen, Christian | 6-7,7-6,3-5 |
| ITF M25 Meerbusch | 2021/04/13 11:00 | Hansen, Christian v Paul Woerner | 2-6,3-6 |
| UTR Pro Tennis Series Amsterdam | 2021/12/06 08:30 | Max Houkes v Jesse De Jager | 4-6,6-2,6-3 |
| ITF - M15 Héraklion | 2021/11/16 07:00 | Max Houkes v Kai Lemstra | 4-6,6-7 |
| ITF - M15 Héraklion | 2021/11/15 08:00 | Max Houkes v Moceanu, Nikolas | 6-0,6-4 |
| ITF - M15 Héraklion | 2021/11/14 07:00 | Max Houkes v Stephanos Schinas | 6-2,6-4 |
| ITF - M15 Héraklion | 2021/11/10 07:00 | Guy Den Heijer v Max Houkes | 7-6,6-3 |
| UTR Pro Tennis Series Amsterdam | 2021/11/07 12:00 | Max Houkes v Admiraal, Amadatus | 6-0,6-4 |
| 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 |