# 2018 Davis Cup Americas Zone Group I

The Americas Zone is one of the three regional zones of the 2018 Davis Cup.
In the Americas Zone there are three different tiers, called groups, in which teams competed against each other to advance to the upper tier. Winners in Group I advanced to the World Group play-offs, along with losing teams from the World Group first round. Teams who lost their respective ties competed in the relegation play-offs, with winning teams remaining in Group I, whereas teams who lost their play-offs were relegated to the Americas Zone Group II in 2019.

## Participating nations
### Draw

| Second Round Play-offs | Second Round Play-offs | Second Round Play-offs | First Round Play-offs | First Round Play-offs | First Round Play-offs | First Round | First Round | First Round | Second Round | Second Round | Second Round |
| | | | | | | 1 | Argentina | | | | |
| | | | | | | | bye | | San Juan, Argentina (indoor clay) | San Juan, Argentina (indoor clay) | San Juan, Argentina (indoor clay) |
| | | | bye | bye | | | | | 1 | Argentina | 3 |
| | | | Ecuador | Ecuador | | Santiago, Chile (clay) | Santiago, Chile (clay) | Santiago, Chile (clay) | | Chile | 2 |
| | | | | | | Chile | 3 | | | |
| Saint Michael, Barbados (hard) | Saint Michael, Barbados (hard) | Saint Michael, Barbados (hard) | | | | Ecuador | Ecuador | | 1 | | |
| Ecuador | Ecuador | 4 | | | | | | | | | |
| Barbados | Barbados | 0 | | | | Saint Michael, Barbados (hard) | Saint Michael, Barbados (hard) | Saint Michael, Barbados (hard) | | | |
| | | | | | | Colombia | Colombia | | 4 | | |
| | | | Santo Domingo Este, Dominican Republic (hard) | Santo Domingo Este, Dominican Republic (hard) | Santo Domingo Este, Dominican Republic (hard) | Barbados | Barbados | 0 | Barranquilla, Colombia (hard) | Barranquilla, Colombia (hard) | Barranquilla, Colombia (hard) |
| | | | Barbados | Barbados | 0 | | | | | Colombia | 3 |
| | | | Dominican Republic | Dominican Republic | 4 | Santo Domingo, Dominican Republic (hard) | Santo Domingo, Dominican Republic (hard) | Santo Domingo, Dominican Republic (hard) | 2 | Brazil | 2 |
| | | | | | | | Dominican Republic | 2 | | | |
| | | | | | | 2 | Brazil | 3 | | | |
* Barbados relegated to Group II in 2019.
* Argentina and Colombia advance to World Group Play-off.

## First round
### Chile vs. Ecuador

| Chile 3 | Court Central Anita Lizana, Santiago, Chile 2–3 February Clay | Court Central Anita Lizana, Santiago, Chile 2–3 February Clay | Ecuador 1 |
| 1 2 3 1 Nicolás Jarry Iván Endara 6 2 6 3     2 Gonzalo Lama Roberto Quiroz 3 6 7$^{13}$ 6$^{11}$ 3 6   3 Nicolás Jarry / Hans Podlipnik-Castillo Diego Hidalgo / Roberto Quiroz 7$^8$ 6$^6$ 7$^7$ 6$^5$     4 Nicolás Jarry Roberto Quiroz 6 4 7$^8$ 6$^6$     5 Gonzalo Lama Iván Endara       not played ||||

### Barbados vs. Colombia

| Barbados 0 | National Tennis Centre, Saint Michael, Barbados 2–3 February Hard | National Tennis Centre, Saint Michael, Barbados 2–3 February Hard | Colombia 4 |
| 1 2 3 1 Haydn Lewis Daniel Elahi Galán 0 6 4 6     2 Darian King Alejandro González 5 7 3 6     3 Darian King / Haydn Lewis Juan Sebastián Cabal / Robert Farah 2 6 6$^4$ 7$^7$     4 Xavier Lawrence Cristian Rodríguez 3 6 0 6     5 Haydn Lewis Alejandro González       not played ||||

### Dominican Republic vs. Brazil

| Dominican Republic 2 | Club Deportivo Naco, Santo Domingo, Dominican Republic 2–3 February Hard | Club Deportivo Naco, Santo Domingo, Dominican Republic 2–3 February Hard | Brazil 3 |
| 1 2 3 1 José Hernández-Fernández João Pedro Sorgi 6 2 4 6 7$^7$ 6$^3$   2 Roberto Cid Subervi Thiago Monteiro 7$^8$ 6$^6$ 5 7 2 6   3 Nick Hardt / José Olivares Marcelo Demoliner / Marcelo Melo 3 6 4 6     4 José Hernández-Fernández Thiago Monteiro 6 4 7$^7$ 6$^4$     5 Roberto Cid Subervi João Pedro Sorgi 7$^{10}$ 6$^8$ 1 6 4 6 ||||

## Second round
### Argentina vs. Chile

| Argentina 3 | Estadio Aldo Cantoni, San Juan, Argentina 6–7 April Clay (i) | Estadio Aldo Cantoni, San Juan, Argentina 6–7 April Clay (i) | Chile 2 |
| 1 2 3 1 Nicolás Kicker Nicolás Jarry 6 4 6$^6$ 7$^8$ 2 6   2 Diego Schwartzman Christian Garín 7$^7$ 6$^2$ 6$^2$ 7$^7$ 6 2   3 Guido Pella / Máximo González Nicolás Jarry / Hans Podlipnik 7$^9$ 6$^7$ 5 7 3 6   4 Diego Schwartzman Nicolás Jarry 6 4 6 4     5 Guido Pella Christian Garín 6 3 7$^7$ 6$^3$ ||||

### Colombia vs. Brazil

| Colombia 3 | Parque Distrital de Raquetas, Barranquilla, Colombia 6–7 April Hard | Parque Distrital de Raquetas, Barranquilla, Colombia 6–7 April Hard | Brazil 2 |
| 1 2 3 1 Santiago Giraldo Thiago Monteiro 1 6 2 6     2 Daniel Elahi Galán Guilherme Clezar 3 6 6 2 6 1   3 Juan Sebastián Cabal / Robert Farah Marcelo Demoliner / Marcelo Melo 6$^5$ 7$^7$ 4 6     4 Daniel Elahi Galán Thiago Monteiro 6 3 6 3     5 Alejandro González João Pedro Sorgi 6 3 7$^7$ 6$^0$ ||||

## 1st round play-offs
### Dominican Republic vs. Barbados

| Dominican Republic 4 | Centro Nacional de Tenis Parque del Este, Santo Domingo Este, Dominican Republic 6–7 April Hard | Centro Nacional de Tenis Parque del Este, Santo Domingo Este, Dominican Republic 6–7 April Hard | Barbados 0 |
| 1 2 3 1 Roberto Cid Subervi Haydn Lewis 7$^7$ 6$^5$ 2 0    retired 2 Víctor Estrella Burgos Xavier Lawrence 6 0 6 2     3 Nick Hardt / José Olivares Xavier Lawrence / Kaipo Marshall 6 3 6 1     4 José Olivares Kaipo Marshall 6 0 6 1     5 Roberto Cid Subervi Xavier Lawrence       not played ||||

## 2nd round play-offs
### Barbados vs. Ecuador

| Barbados 0 | National Tennis Centre, Saint Michael, Barbados 14–15 September Hard | National Tennis Centre, Saint Michael, Barbados 14–15 September Hard | Ecuador 4 |
| 1 2 3 1 Matthew Foster-Estwick Roberto Quiroz 0 6 1 6     2 Darian King Emilio Gómez 3 6 6 3 3 6   3 Darian King / Haydn Lewis Gonzalo Escobar / Diego Hidalgo 4 6 6$^0$ 7$^7$     4 Xavier Lawrence Diego Hidalgo 0 6 1 6     5 Matthew Foster-Estwick Emilio Gómez       not played ||||