2020 Rio Open – Singles
| Singles | |
|---|---|
| 2020 Rio Open | |
| Champion | Cristian Garín |
| Runner-up | Gianluca Mager |
| Score | 7–6(7–3), 7–5 |
| Draw | 32 (4 Q / 3 WC ) |
| Seeds | 8 |
Cristian Garín won the title, defeating Gianluca Mager in the final, 7–6(7–3), 7–5.
Laslo Đere was the defending champion, 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.
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.