Rio Open 2018
Diego Schwartzman won the title, beating Fernando Verdasco 6–2 6–3 in the final.
Main draw 32 players
- 1🇭🇷Marin Cilic#97Round of 16 · Lost to Gael Monfils
- 2🇦🇹Dominic ThiemQuarterfinals · Lost to Fernando Verdasco
- 3🇪🇸Pablo Carreno Busta#77Round of 16 · Lost to Aljaz Bedene
- 4🇪🇸Albert RamosRound of 16 · Lost to Nicolas Jarry
- 5🇮🇹Fabio FogniniSemifinals · Lost to Fernando Verdasco
- 6🇦🇷Diego SchwartzmanFinal · Champion
- 7🇺🇾Pablo CuevasQuarterfinals · Lost to Nicolas Jarry
- 8🇪🇸Fernando VerdascoFinal · Lost to Diego Schwartzman
- 🇨🇱Nicolas JarrySemifinals · Lost to Diego Schwartzman
- 🇸🇮Aljaz BedeneQuarterfinals · Lost to Fabio Fognini
- 🇫🇷Gael MonfilsQuarterfinals · Lost to Diego Schwartzman
- 🇦🇷Federico DelbonisRound of 16 · Lost to Diego Schwartzman
- LL🇵🇹Gastao EliasRound of 16 · Lost to Pablo Cuevas
- 🇦🇷Nicolas Kicker#336Round of 16 · Lost to Fernando Verdasco
- PR🇪🇸Pablo AndujarRound of 16 · Lost to Dominic Thiem
- 🇺🇸Tennys SandgrenRound of 16 · Lost to Fabio Fognini
- PR🇦🇹Andreas Haider MaurerRound of 32 · Lost to Aljaz Bedene
- Q🇦🇷Carlos BerlocqRound of 32 · Lost to Marin Cilic
- WC🇳🇴Casper Ruud#18Round of 32 · Lost to Diego Schwartzman
- 🇷🇸Dusan Lajovic#158Round of 32 · Lost to Dominic Thiem
- 🇦🇹Gerald MelzerRound of 32 · Lost to Pablo Andujar
- 🇦🇷Guido PellaRound of 32 · Lost to Gastao Elias
- 🇪🇸Guillermo Garcia LopezRound of 32 · Lost to Nicolas Jarry
- 🇦🇷Horacio ZeballosRound of 32 · Lost to Gael Monfils
- 🇨🇿Jiri VeselyRound of 32 · Lost to Federico Delbonis
- 🇦🇷Leonardo MayerRound of 32 · Lost to Fernando Verdasco
- Q🇮🇹Marco Cecchinato#173Round of 32 · Lost to Pablo Carreno Busta
- Q🇪🇸Roberto Carballes Baena#266Round of 32 · Lost to Tennys Sandgren
- 🇧🇷Rogerio Dutra SilvaRound of 32 · Lost to Albert Ramos
- WC🇧🇷Thiago Monteiro#225Round of 32 · Lost to Pablo Cuevas
- WC🇧🇷Thomaz BellucciRound of 32 · Lost to Fabio Fognini
- DOMVictor EstrellaRound of 32 · Lost to Nicolas Kicker