Davis Cup WG PO: ARG vs COL 2018 ATP
Round robin
| Pemenang | Kalah | Skor | |
|---|---|---|---|
| Diego Schwartzman | m. | Santiago Giraldo | 6-3 6-1 6-7(3) 6-1 |
| Guido Pella | m. | Daniel Elahi Galan | 3-6 6-4 4-6 6-3 6-2 |
| Horacio Zeballos | m. | Nicolas Mejia | 7-5 6-2 |
| Pemenang | Kalah | Skor | |
|---|---|---|---|
| Diego Schwartzman | m. | Santiago Giraldo | 6-3 6-1 6-7(3) 6-1 |
| Guido Pella | m. | Daniel Elahi Galan | 3-6 6-4 4-6 6-3 6-2 |
| Horacio Zeballos | m. | Nicolas Mejia | 7-5 6-2 |