Davis Cup WG PO: ARG vs COL 2018
Players
| Player | Country | Reached | |
|---|---|---|---|
 |
Diego Schwartzman | ARG | Round Robin |
| GP | Guido Pella | ARG | Round Robin |
| HZ | Horacio Zeballos | ARG | Round Robin |
 |
Daniel Elahi Galan | COL | Round Robin |
 |
Nicolas Mejia | COL | Round Robin |
 |
Santiago Giraldo | COL | Round Robin |
Other matches
| Round | Winner | Loser | Score |
|---|---|---|---|
| RR | Diego Schwartzman | Santiago Giraldo | 6-3 6-1 6-7(3) 6-1 |
| RR | Guido Pella | Daniel Elahi Galan | 3-6 6-4 4-6 6-3 6-2 |
| RR | Horacio Zeballos | Nicolas Mejia | 7-5 6-2 |