ATP - Rio de Janeiro 1R continued

First round continued in Rio de Janeiro.

2023 Rio Open presented by Claro, an ATP 500 tournament, on Clay, in Rio de Janeiro, Brazil, 20-26 February 2023.

Defending champion:

Carlos Alcaraz (7) who defeated Diego Schwartzman (3) 6-4 6-2

Eighth seed Federico Coria withdrew after the main draw was published due to a shoulder injury, and was replaced by lucky loser Juan Manuel Cerundolo.

Juan Manuel Cerundolo took the place in the draw originally allocated to a qualifier, and would play second seed Cameron Norrie.

First round results:

- Carlos Alcaraz (1) led wildcard Mateus Alves 6-4 5-3 when rain stopped play 

- Fabio Fognini led qualifier Tomas Barrios Vera 6-2 5-2 when rain stopped 

- Juan Pablo Varillas defeated qualifier Hugo Gaston 7-5 6-4

- Tomas Martin Etcheverry led Albert Ramos-Vinolas (7) 7-5 3-4 when rain stopped play

- Daniel Elahi Galan defeated Pedro Cachin 7-6(4) 6-4

- Francisco Cerundolo (4) defeated Roberto Carballes Baena 4-6 6-3 6-3

- Cameron Norrie (2) defeated lucky loser Juan Manuel Cerundolo 7-5 6-1