2018 Milex Open – Singles

Víctor Estrella Burgos was the defending champion but lost in the first round to Federico Delbonis.

Christian Garín won the title after defeating Delbonis 6–4, 5–7, 6–4 in the final.

Seeds
• # Pablo Cuevas (first round)

• # 🇦🇷 Federico Delbonis (final)

• # 🇦🇷 Guido Andreozzi (second round)

• # 🇧🇴 Hugo Dellien (first round)

• # 🇮🇹 Paolo Lorenzi (quarterfinals)

• # 🇧🇷 Thiago Monteiro (first round)

• # 🇦🇷 Juan Ignacio Londero (second round)

• # 🇦🇷 Facundo Bagnis (first round)