2020 Rio Open – Singles
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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.
Seeds
- Austria Dominic Thiem (quarterfinals)
- Serbia Dušan Lajović (second round)
- Chile Cristian Garín (champion)
- Argentina Guido Pella (first round)
- Croatia Borna Ćorić (semifinals)
- Serbia Laslo Đere (withdrew)
- Spain Albert Ramos Viñolas (first round)
- Norway Casper Ruud (first round)
- Spain Fernando Verdasco (first round)
Draw
Key
- Q = Qualifier
- WC = Wild card
- LL = Lucky loser
- Alt = Alternate
- ITF = ITF entry
- PR = Protected ranking
- SR = Special ranking
- SE = Special exempt
- JE = Junior exempt
- JR = Junior Accelerator Programme entrant
- CO = College Accelerator Programme entrant
- NG = Next Gen Accelerator Program entrant
- w/o = Walkover
- r = Retired
- d = Defaulted
Finals
| Semifinals | Final | ||||||||||||
| Q | Italy Gianluca Mager | 77 | 4 | 77 | |||||||||
| LL | Hungary Attila Balázs | 64 | 6 | 62 | |||||||||
| Q | Italy Gianluca Mager | 63 | 5 | ||||||||||
| 3 | Chile Cristian Garín | 77 | 7 | ||||||||||
| 3 | Chile Cristian Garín | 6 | 7 | ||||||||||
| 5 | Croatia Borna Ćorić | 4 | 5 |
Top half
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | Austria D Thiem | 6 | 4 | 6 | |||||||||||||||||||||||
| WC | Brazil F Meligeni Alves | 2 | 6 | 1 | 1 | Austria D Thiem | 65 | 6 | 6 | ||||||||||||||||||
| Spain J Munar | 7 | 6 | Spain J Munar | 77 | 3 | 4 | |||||||||||||||||||||
| Italy S Caruso | 5 | 4 | 1 | Austria D Thiem | 64 | 5 | |||||||||||||||||||||
| Q | Portugal J Domingues | 710 | 6 | Q | Italy G Mager | 77 | 7 | ||||||||||||||||||||
| LL | Italy F Gaio | 68 | 4 | Q | Portugal J Domingues | 3 | 65 | ||||||||||||||||||||
| Q | Italy G Mager | 77 | 7 | Q | Italy G Mager | 6 | 77 | ||||||||||||||||||||
| 8 | Norway C Ruud | 64 | 5 | Q | Italy G Mager | 77 | 4 | 77 | |||||||||||||||||||
| 4 | Argentina G Pella | 7 | 4 | 63 | LL | Hungary A Balázs | 64 | 6 | 62 | ||||||||||||||||||
| Brazil T Monteiro | 5 | 6 | 77 | Brazil T Monteiro | 6 | 1 | 4 | ||||||||||||||||||||
| LL | Hungary A Balázs | 6 | 6 | LL | Hungary A Balázs | 1 | 6 | 6 | |||||||||||||||||||
| Uruguay P Cuevas | 4 | 3 | LL | Hungary A Balázs | 2 | 6 | 6 | ||||||||||||||||||||
| Q | Spain P Martínez | 3 | 6 | 7 | Q | Spain P Martínez | 6 | 4 | 2 | ||||||||||||||||||
| Bolivia H Dellien | 6 | 2 | 5 | Q | Spain P Martínez | 6 | 6 | ||||||||||||||||||||
| Spain P Andújar | 6 | 6 | Spain P Andújar | 1 | 4 | ||||||||||||||||||||||
| 9 | Spain F Verdasco | 3 | 3 |
Bottom half
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 7 | Spain A Ramos Viñolas | 62 | 6 | 62 | |||||||||||||||||||||||
| WC | Spain C Alcaraz | 77 | 4 | 77 | WC | Spain C Alcaraz | 4 | 6 | 4 | ||||||||||||||||||
| France C Moutet | 6 | 61 | 63 | Q | Argentina F Coria | 6 | 4 | 6 | |||||||||||||||||||
| Q | Argentina F Coria | 1 | 77 | 77 | Q | Argentina F Coria | 6 | 3 | 5 | ||||||||||||||||||
| Spain R Carballés Baena | 2 | 4 | 3 | Chile C Garín | 2 | 6 | 7 | ||||||||||||||||||||
| Argentina F Delbonis | 6 | 6 | Argentina F Delbonis | 4 | 3 | ||||||||||||||||||||||
| Slovakia A Martin | 6 | 5 | 65 | 3 | Chile C Garín | 6 | 6 | ||||||||||||||||||||
| 3 | Chile C Garín | 4 | 7 | 77 | 3 | Chile C Garín | 6 | 7 | |||||||||||||||||||
| 5 | Croatia B Ćorić | 77 | 7 | 5 | Croatia B Ćorić | 4 | 5 | ||||||||||||||||||||
| Argentina JI Londero | 65 | 5 | 5 | Croatia B Ćorić | 6 | 1 | 77 | ||||||||||||||||||||
| Spain A Davidovich Fokina | 7 | 63 | 5 | WC | Brazil T Seyboth Wild | 3 | 6 | 65 | |||||||||||||||||||
| WC | Brazil T Seyboth Wild | 5 | 77 | 7 | 5 | Croatia B Ćorić | 77 | 6 | |||||||||||||||||||
| Argentina L Mayer | 1 | 7 | 4 | Italy L Sonego | 65 | 3 | |||||||||||||||||||||
| Italy L Sonego | 6 | 5 | 6 | Italy L Sonego | 77 | 77 | |||||||||||||||||||||
| Italy M Cecchinato | 4 | 77 | 1 | 2 | Serbia D Lajović | 65 | 65 | ||||||||||||||||||||
| 2 | Serbia D Lajović | 6 | 64 | 6 |
Qualifying
Seeds
- Slovakia Andrej Martin (moved to main draw)
- Hungary Attila Balázs (qualifying competition,lucky loser)
- Argentina Federico Coria (qualified)
- Italy Federico Gaio (qualifying competition,lucky loser)
- Italy Gianluca Mager (qualified)
- Slovakia Jozef Kovalík (qualifying competition)
- Spain Pedro Martínez (qualified)
- Italy Alessandro Giannessi (first round, retired)
Qualifiers
Lucky losers
Qualifying draw
First qualifier
| First round | Qualifying competition | ||||||||||||
| Alt | Spain Mario Vilella Martínez | 64 | 3 | ||||||||||
| Slovakia Filip Horanský | 77 | 6 | |||||||||||
| Slovakia Filip Horanský | 4 | 2 | |||||||||||
| 7 | Spain Pedro Martínez | 6 | 6 | ||||||||||
| WC | Brazil Mateus Alves | 2 | 3 | ||||||||||
| 7 | Spain Pedro Martínez | 6 | 6 |
Second qualifier
| First round | Qualifying competition | ||||||||||||
| 2 | Hungary Attila Balázs | 6 | 6 | ||||||||||
| WC | Brazil Orlando Luz | 3 | 3 | ||||||||||
| 2 | Hungary Attila Balázs | 0 | 2 | ||||||||||
| 5 | Italy Gianluca Mager | 6 | 6 | ||||||||||
| Argentina Andrea Collarini | 1 | 2 | |||||||||||
| 5 | Italy Gianluca Mager | 6 | 6 |
Third qualifier
| First round | Qualifying competition | ||||||||||||
| 3 | Argentina Federico Coria | 77 | 6 | ||||||||||
| Spain Carlos Taberner | 65 | 1 | |||||||||||
| 3 | Argentina Federico Coria | 6 | 6 | ||||||||||
| 6 | Slovakia Jozef Kovalík | 2 | 4 | ||||||||||
| WC | Brazil Pedro Boscardin Dias | 3 | 1 | ||||||||||
| 6 | Slovakia Jozef Kovalík | 6 | 6 |
Fourth qualifier
| First round | Qualifying competition | ||||||||||||
| 4 | Italy Federico Gaio | 65 | 6 | 6 | |||||||||
| Brazil João Menezes | 77 | 4 | 3 | ||||||||||
| 4 | Italy Federico Gaio | 6 | 65 | 5 | |||||||||
| Portugal João Domingues | 3 | 77 | 7 | ||||||||||
| Portugal João Domingues | 7 | 3 | |||||||||||
| 8 | Italy Alessandro Giannessi | 5 | 1r |