Stadium: Court 11 Round: 62 Ground: Hardcourt outdoor
| ITF M25 - Sintra | 2021/09/07 10:45 | Alastair Gray v Henrik Heise Korsgaard | 6-1,6-4 |
| ITF M25 - Sintra | 2021/09/06 13:30 | Paulo A S Dos Santos v Henrik Heise Korsgaard | 7-5,5-7,6-10 |
| ITF M15 - Vejle | 2021/07/29 14:35 | Henrik Heise Korsgaard v Christian Sigsgaard | 7-5,6-2 |
| ITF M15 - Vejle | 2021/07/27 17:20 | Leonardo Catani v Henrik Heise Korsgaard | 3-6,3-6 |
| UTR Pro Tennis Series - København | 2021/06/19 08:30 | Dominik Palan v Henrik Heise Korsgaard | 6-7,5-2 |
| UTR Pro Tennis Series - København | 2021/06/18 08:00 | Henrik Atlevi v Henrik Heise Korsgaard | 0-6,3-6 |
| UTR Pro Tennis Series - København | 2021/06/17 08:00 | Maxim Landa v Henrik Heise Korsgaard | 1-6,4-6 |
| UTR Pro Tennis Series - København | 2021/06/16 09:30 | Sebastian Grundtvig Jorgensen v Henrik Heise Korsgaard | 6-3,6-5 |
| ITF M25 - Eupen | 2021/09/07 07:30 | Juan Ignacio Galarza v Jip Van Assendelft | 4-6,6-2,10-3 |
| ITF M25 - Eupen | 2021/09/06 09:15 | Jip Van Assendelft v Jing L Weng | 6-4,6-1 |
| ITF M25 - Eupen | 2021/09/05 12:00 | Jip Van Assendelft v Joris Hoogland | 6-2,6-1 |
| ITF M25 - Alkmaar | 2021/06/20 12:00 | Jip Van Assendelft v Benjamin Dhoe | 2-6,3-6 |
| ITF M15 - Antalya | 2021/05/30 07:30 | Jip Van Assendelft v Nicolas Agustin Lema | 4-6,7-6,10-12 |
| ITF M15 - Antalya | 2021/05/24 10:00 | Jip Van Assendelft v Davide Albertoni | 2-6,1-6 |
| ITF M15 - Antalya | 2021/05/23 07:00 | John Sperle v Jip Van Assendelft | 5-7,7-5,4-10 |
| ITF M15 - Monastir | 2021/04/11 10:00 | Jip Van Assendelft v Piotr Matuszewski | 5-7,4-6 |