Stadium: Court 1 Round: 26 Ground: Clay
| ITF M15 - Vejle - Herrdubbel | 2021/07/31 10:10 | Kopp/Veldheer v Ingildsen/Sigsgaard | 4-6,4-6 |
| ITF M15 - Vejle - Herrdubbel | 2021/07/30 17:15 | Holmgren/Oetzbach v Kopp/Veldheer | 2-6,3-6 |
| ITF M15 - Vejle - Herrdubbel | 2021/07/27 15:15 | Kirkin/Zukas v Kopp/Veldheer | 3-6,6-7 |
| ITF M25 - Telfs - Herrdubbel | 2021/07/15 15:15 | Novansky/Palovic v Kopp/Veldheer | 2-6,6-7 |
| ITF M25 - Telfs - Herrdubbel | 2021/07/13 12:00 | Novansky/Palovic v Kopp/Veldheer | 2-6,6-7 |
| ITF M15 - Antalya - Herrdubbel | 2021/05/18 11:00 | Kopp/Veldheer v Luz/Roveri Sidney | 6-2,2-6,7-10 |
| ITF M15 - Antalya - Herrdubbel | 2021/05/13 12:50 | Friberg/Yitbarek v Kopp/Veldheer | 6-2,6-4 |
| ITF M15 - Antalya - Herrdubbel | 2021/05/11 12:30 | Kopp/Veldheer v Forti/Galoppini | 6-1,6-4 |