2018 Rio Open – Singles
Dominic Thiem was the defending champion, but lost in the quarterfinals to Fernando Verdasco.
Diego Schwartzman won the title, defeating Verdasco in the final, 6–2, 6–3.
Qualifying
Lucky losers
- '''Gastão Elias'''
Dominic Thiem was the defending champion, but lost in the quarterfinals to Fernando Verdasco.
Diego Schwartzman won the title, defeating Verdasco in the final, 6–2, 6–3.