Stadium: Cancha 3 Round: 29 Ground: Clay
| Challenger Buenos Aires MD | 2021/10/22 15:00 | Darderi/Torres v Aboian/Aboian | 7-6,6-4 |
| Challenger Buenos Aires MD | 2021/10/21 17:10 | Matos/M R Alves v Darderi/Torres | 6-7,6-2,6-10 |
| Challenger Buenos Aires MD | 2021/10/20 19:00 | Darderi/Torres v Etcheverry/Olivo | 7-6,6-2 |
| Challenger Buenos Aires MD | 2021/10/22 16:40 | Casanova/Rodriguez Taverna v Kicker/Ugo Carabelli | 6-3,6-2 |
| Challenger Buenos Aires MD | 2021/10/21 20:30 | Casanova/Rodriguez Taverna v Duran/Tirante | 6-1,6-7,10-8 |
| Challenger Buenos Aires MD | 2021/10/19 20:00 | Casanova/Rodriguez Taverna v Collarini/Kestelboim | 6-2,7-6 |