2018 Rio Open

The 2018 Rio Open was a professional men's tennis tournament played on outdoor clay courts. It was the 5th edition of the tournament, and part of the ATP World Tour 500 series of the 2018 ATP World Tour. It took place in Rio de Janeiro, Brazil between February 19–25, 2018.

Singles

 * 🇦🇷 Diego Schwartzman defeated 🇪🇸 Fernando Verdasco, 6–2, 6–3

Doubles

 * 🇪🇸 David Marrero / 🇪🇸 Fernando Verdasco defeated Nikola Mektić / 🇦🇹 Alexander Peya, 5–7, 7–5, [10–8]

Prize money
1 Qualifiers prize money is also the Round of 32 prize money

Seeds

 * 1 Rankings as of February 12, 2018.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇧🇷 Thomaz Bellucci
 * 🇧🇷 Thiago Monteiro
 * 🇳🇴 Casper Ruud

The following players received entry using a protected ranking:
 * 🇪🇸 Pablo Andújar
 * 🇦🇹 Andreas Haider-Maurer

The following players received entry from the qualifying draw:
 * 🇦🇷 Carlos Berlocq
 * 🇪🇸 Roberto Carballés Baena
 * 🇮🇹 Marco Cecchinato
 * 🇫🇷 Corentin Moutet

The following player received entry as a lucky loser:
 * Gastão Elias

Withdrawals

 * Before the tournament
 * 🇺🇦 Alexandr Dolgopolov → replaced by 🇺🇸 Tennys Sandgren
 * 🇬🇧 Kyle Edmund → replaced by 🇪🇸 Pablo Andújar
 * 🇮🇹 Paolo Lorenzi → replaced by 🇦🇹 Gerald Melzer
 * 🇫🇷 Corentin Moutet → replaced by Gastão Elias
 * 🇩🇪 Cedrik-Marcel Stebe → replaced by 🇦🇷 Nicolás Kicker

Retirements

 * 🇪🇸 Pablo Andújar
 * 🇪🇸 Roberto Carballés Baena
 * 🇳🇴 Casper Ruud
 * 🇨🇿 Jiří Veselý

Seeds

 * 1 Rankings as of February 12, 2018.

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇧🇷 Thomaz Bellucci / 🇧🇷 André Sá
 * 🇧🇷 Fabiano de Paula / 🇧🇷 Thiago Monteiro

The following pair received entry from the qualifying draw:
 * Nicolás Jarry / 🇨🇿 Jiří Veselý

The following pair received entry as lucky losers:
 * 🇪🇸 David Marrero / 🇪🇸 Fernando Verdasco

Withdrawals

 * Before the tournament
 * 🇪🇸 Pablo Carreño Busta