Stadium: Cancha 1 Round: 28 Ground: Clay
| Challenger Santiago MD | 2021/10/08 16:00 | King/Schnur v Martinez/Oliveira | 7-6,6-1 |
| Challenger Santiago MD | 2021/10/14 16:00 | Salazar/Urzua-Rivera v King/Schnur | 1-6,2-6 |
| Challenger Santiago MD | 2021/10/12 19:55 | Casanova/D Acosta v King/Schnur | 3-6,2-6 |
| Challenger Santiago MD | 2021/10/09 20:00 | Hidalgo/Jarry v King/Schnur | 6-3,5-7,10-6 |
| Challenger Santiago MD | 2021/10/08 16:00 | King/Schnur v Martinez/Oliveira | 7-6,6-1 |
| Challenger Santiago MD | 2021/10/07 17:30 | Galdos/Mena v King/Schnur | 4-6,6-3,8-10 |
| Challenger Santiago MD | 2021/10/06 18:30 | Cerundolo/Ugo Carabelli v King/Schnur | 0-6,3-6 |
| Challenger Verona MD | 2021/08/20 14:20 | Doumbia/Reboul v King/Schnur | 6-3,7-6 |
| Challenger Verona MD | 2021/08/19 12:30 | Luz/P De Almeida v King/Schnur | 4-6,3-6 |
| Challenger Santiago MD | 2021/10/14 22:35 | F Flores/Santibanez v Martinez/Oliveira | 1-6,2-6 |
| Challenger Santiago MD | 2021/10/13 21:00 | P De Almeida/Tirante v Martinez/Oliveira | 3-6,7-6,7-10 |
| Challenger Santiago MD | 2021/10/08 16:00 | King/Schnur v Martinez/Oliveira | 7-6,6-1 |
| Challenger Santiago MD | 2021/10/07 19:15 | Barrios Vera/Gomez-Herrera v Martinez/Oliveira | 3-6,6-7 |
| Challenger Santiago MD | 2021/10/06 20:20 | Ficovich/Tirante v Martinez/Oliveira | 6-3,3-6,7-10 |
| Challenger Santiago MD | 2021/03/20 19:35 | Martinez/Oliveira v Matos/M R Alves | 7-5,6-1 |
| Challenger Santiago MD | 2021/03/19 18:10 | Martinez/Oliveira v Cuevas/Varillas | 6-3,6-7,10-3 |
| Challenger Santiago MD | 2021/03/18 18:00 | Martinez/Oliveira v Arias/Zeballos | 6-4,6-3 |