2020 Rio Open – Singles

Cristian Garín won the title, defeating Gianluca Mager in the final, 7–6(7–3), 7–5.

Laslo Đere was the defending champion,[1] but withdrew with an abdominal injury before the tournament began.

This was the first clay court tournament where players were allowed to use the challenge system.

[2] This tournament was notable for being the ATP debut of future world No.1 Carlos Alcaraz.

He received a wildcard into the main draw and reached the second round, after a win over compatriot Albert Ramos Viñolas.