Stadium: Court Tsitsipas Round: 27 Ground: Hardcourt outdoor
| ITF - M15 Héraklion - Doubles Hommes | 2021/11/16 14:45 | Brown/Seelig v Dragomirov/Krainer | 6-7,6-3,10-1 |
| ITF - M15 Héraklion - Doubles Hommes | 2021/11/11 10:20 | Fayziev S / Kalovelonis M v Brown/Seelig | 6-3,6-4 |
| ITF - M15 Héraklion - Doubles Hommes | 2021/11/09 10:50 | Fortin/M Martin v Brown/Seelig | 2-6,2-6 |
| ITF - M15 Héraklion - Doubles Hommes | 2021/11/16 14:00 | Papounidis/Schinas v Kopp/Veldheer | 3-6,6-7 |
| ITF M25 Trier MD | 2021/08/27 14:30 | Kopp/Veldheer v Echargui/Folliot | 2-6,1-6 |
| ITF M25 Trier MD | 2021/08/26 14:00 | Kopp/Veldheer v Chandrasekar A / Sureshkumar M | 6-3,6-2 |
| ITF M25 Trier MD | 2021/08/24 12:30 | Kopp/Veldheer v Guenther/Schommer | 6-2,6-1 |
| ITF M25 Frankfurt am Main MD | 2021/08/12 13:30 | Esteve Lobato E / Roca Batalla O v Kopp/Veldheer | 7-6,6-4 |
| ITF M25 Frankfurt am Main MD | 2021/08/11 13:30 | Penzlin/Sigsgaard v Kopp/Veldheer | 1-6,3-6 |
| ITF M15 Vejle MD | 2021/07/31 10:10 | Kopp/Veldheer v Ingildsen/Sigsgaard | 4-6,4-6 |
| ITF M15 Vejle MD | 2021/07/30 17:15 | Holmgren/Oetzbach v Kopp/Veldheer | 2-6,3-6 |