Dominic Thiem Dominic Thiem (; born 3 September 1993) is an Austrian former professional tennis player. He was ranked world No. 3 in singles by the Association of Tennis Professionals (ATP), which he first achieved in March 2020. Thiem won 17 ATP Tour-level s ...

was the defending champion, but lost in the quarterfinals to

Fernando Verdasco Fernando Verdasco Carmona (; born 15 November 1983) is a Spaniards, Spanish tennis coach and a former professional player. He was ranked world No. 7 in men's singles by the Association of Tennis Professionals, ATP, achieved in April 2009, and w ...

Diego Schwartzman Diego Sebastián Schwartzman (, ; born 16 August 1992) is an Argentine former professional tennis player. He won four ATP Tour singles titles and reached his career-high singles ranking of world No. 8 in October 2020. As a clay court specialist ...

won the title, defeating Verdasco in the final, 6–2, 6–3.

Seeds

Draw

Finals

Top half

Bottom half

Qualifying

Seeds

Qualifiers

Lucky losers

Gastão Elias Gastão José Ministro Elias (; born 24 November 1990) is a Portuguese professional tennis player, who competes on the ATP Challenger Tour. In October 2016, he reached a career-high singles ranking of world No. 57 to become the third highest-ran ...

Qualifying draw

First qualifier

Second qualifier

Third qualifier

Fourth qualifier

External links

Main draw

Qualifying draw
{{DEFAULTSORT:2018 Rio Open - Singles Rio Open - Singles Rio Rio Open