Stadium: Indoor 6 Round: 29 Ground: Clay
| Challenger Braga MD | 2021/09/24 15:30 | Faria/Faria v Borges/Cabral | 7-6,3-6,7-10 |
| Challenger Braga MD | 2021/09/23 14:05 | Borges/Cabral v Collarini/Vervoort | 7-6,6-2 |
| Challenger Braga MD | 2021/09/22 15:00 | Borges/Cabral v Baldi/Berrettini | 4-6,6-1,10-8 |
| Challenger Porto MD | 2021/07/01 10:00 | Borges/Cabral v Andreozzi/Duran | 6-7,2-6 |
| Challenger Oeiras MD | 2021/05/28 16:15 | Borges/Cabral v Lenz/Quiroz | 6-7,2-6 |
| Challenger Oeiras MD | 2021/05/27 15:45 | Bonadio/Serdarusic v Borges/Cabral | 2-6,2-6 |
| Challenger Oeiras MD | 2021/05/26 12:25 | Borges/Cabral v Drzewiecki/Martos Gornes | 7-6,6-7,11-9 |
| Challenger Oeiras MD | 2021/05/21 16:25 | Borges/Cabral v Reese/Verbeek | 4-6,4-6 |
| Challenger Braga MD | 2021/09/24 13:50 | de Jong/Stevens v Hermans/Sijsling | 6-1,6-1 |
| Challenger Braga MD | 2021/09/23 10:25 | Bobrov/Ortega-Olmedo v de Jong/Stevens | 3-6,3-6 |
| Challenger Braga MD | 2021/09/22 13:50 | Daniel/De Loore v de Jong/Stevens | 4-6,7-5,3-10 |
| Challenger Meerbusch MD | 2021/08/13 09:00 | de Jong/Stevens v Walkow/Zielinski | 2-6,7-6,9-11 |
| Challenger Meerbusch MD | 2021/08/12 11:30 | Ajdukovic/Fatic v de Jong/Stevens | 0-6,2-6 |
| Challenger Meerbusch MD | 2021/08/11 09:30 | de Jong/Stevens v Begemann/Olivetti | 6-4,7-5 |
| Challenger Amersfoort MD | 2021/07/13 12:50 | de Jong/Stevens v De Jonge/Ouden | 4-6,6-7 |
| ITF M25 The Hague MD | 2021/07/03 12:55 | de Jong/Stevens v Brouwer/Sels | 6-3,6-4 |