Stadium: Cancha 3 Round: 27 Ground: Clay
| Challenger Buenos Aires MD | 2021/10/20 21:10 | Matos/M R Alves v Cerundolo/Cuevas | 6-2,7-5 |
| Challenger Santiago MD | 2021/10/14 17:25 | Matos/M R Alves v Barrientos/Romboli | 6-2,4-6,7-10 |
| Challenger Santiago MD | 2021/10/08 20:50 | Matos/M R Alves v Hidalgo/Jarry | 6-2,2-6,8-10 |
| Challenger Santiago MD | 2021/10/07 16:00 | Matos/M R Alves v Baez/P De Almeida | 6-4,6-3 |
| Challenger Santiago MD | 2021/10/06 17:30 | Matos/M R Alves v Ortiz/Ortiz Gamonal | 6-2,6-1 |
| Challenger Tulln MD | 2021/09/11 09:00 | Brown/Vavassori v Matos/M R Alves | 7-6,6-1 |
| Challenger Tulln MD | 2021/09/10 08:30 | Haerteis/Hassan v Matos/M R Alves | 3-6,6-7 |
| Challenger Tulln MD | 2021/09/09 10:20 | Martineau/Villanueva v Matos/M R Alves | 1-6,2-6 |
| Challenger Buenos Aires MD | 2021/10/20 19:00 | Darderi/Torres v Etcheverry/Olivo | 7-6,6-2 |