2019 Brasil Open – Singles

Fabio Fognini was the defending champion, but chose not to defend his title.

Guido Pella won his first ATP title, defeating Cristian Garín 7–5, 6–3 in the final.

Seeds
The top four seeds received a bye into the second round. • # João Sousa (second round)

• #🇹🇳 Malek Jaziri (second round)

• #🇦🇷 Guido Pella (champion)

• #🇦🇷 Leonardo Mayer (quarterfinals)

• # Pablo Cuevas (first round)

• #🇪🇸 Jaume Munar (second round)

• #🇦🇷 Juan Ignacio Londero (second round)

• #🇯🇵 Taro Daniel (first round)

Seeds
• # 🇦🇷 Carlos Berlocq (qualifying competition)

• # 🇦🇷 Facundo Bagnis (qualified)

• # 🇮🇹 Alessandro Giannessi (qualified)

• # 🇪🇸 Pedro Martínez (qualified)

• # 🇪🇸 Daniel Gimeno Traver (first round)

• # 🇦🇷 Facundo Argüello (first round)

• # 🇧🇪 Kimmer Coppejans (qualifying competition)

• # 🇮🇹 Matteo Donati (first round)

Qualifiers
• # 🇧🇷 Pedro Sakamoto

• # 🇦🇷 Facundo Bagnis

• # 🇮🇹 Alessandro Giannessi

• # 🇪🇸 Pedro Martínez