Estádio: Estadio CIF Round: 29 Ground: Clay
| Challenger - Lisboa - Duplas Masculinas | 2021/10/01 11:00 | Nedunchezhiyan/Raja v Faria/Faria | 4-6,6-3,10-5 |
| Challenger - Lisboa - Duplas Masculinas | 2021/09/30 09:30 | Nedunchezhiyan/Raja v Forti/Zeppieri | 6-3,6-4 |
| Challenger - Lisboa - Duplas Masculinas | 2021/09/29 12:00 | Nedunchezhiyan/Raja v Cacao/Falcao | 6-3,6-2 |
| Challenger - Rennes - Duplas Masculinas | 2021/09/17 09:00 | Nedunchezhiyan/Raja v Stevens/Van Rijthoven | 6-4,6-7,8-10 |
| Challenger - Rennes - Duplas Masculinas | 2021/09/16 12:00 | Gabashvili/Janvier v Nedunchezhiyan/Raja | 6-3,1-6,5-10 |
| Challenger - Rennes - Duplas Masculinas | 2021/09/14 13:00 | Jacquet/Mayot v Nedunchezhiyan/Raja | 4-6,5-7 |
| Challenger - Cassis - Duplas Masculinas | 2021/09/08 11:35 | Matsui/Uesugi v Nedunchezhiyan/Raja | 7-5,6-1 |
| Challenger - St. Tropez - Duplas Masculinas | 2021/09/02 11:25 | Grenier/Muller v Nedunchezhiyan/Raja | 4-6,6-1,10-2 |
| Challenger - Lisboa - Duplas Masculinas | 2021/10/01 12:40 | Borges/Cabral v Fallert/Heller | 6-2,6-2 |
| Challenger - Lisboa - Duplas Masculinas | 2021/09/30 15:30 | Borges/Cabral v Fanselow/Gerch | 6-4,6-4 |
| Challenger - Lisboa - Duplas Masculinas | 2021/09/29 10:40 | Gomes/Rocha v Borges/Cabral | 3-6,3-6 |
| Challenger - Braga - Duplas Masculinas | 2021/09/25 11:00 | Borges/Cabral v De Jong/Stevens | 6-3,6-7,10-5 |
| Challenger - Braga - Duplas Masculinas | 2021/09/24 15:30 | Faria/Faria v Borges/Cabral | 7-6,3-6,7-10 |
| Challenger - Braga - Duplas Masculinas | 2021/09/23 14:05 | Borges/Cabral v Collarini/Vervoort | 7-6,6-2 |
| Challenger - Braga - Duplas Masculinas | 2021/09/22 15:00 | Borges/Cabral v Baldi/Berrettini | 4-6,6-1,10-8 |
| Challenger - Porto - Duplas Masculinas | 2021/07/01 10:00 | Borges/Cabral v Andreozzi/Duran | 6-7,2-6 |