See main article: 1988 Davis Cup.
The Americas Zone was one of the three zones of the regional Davis Cup competition in 1988.
In the Americas Zone there were two different tiers, called groups, in which teams competed against each other to advance to the upper tier.
The winner of Group I was promoted to the following year's World Group. Teams who lost their respective first-round ties competed in the relegation play-off, with the winning team remaining in Group I, whereas the losing team was relegated to the Americas Zone Group II in 1989.[1]
The winner in Group II advanced to the Americas Zone Group I in 1989.