2018 Milex Open

Country	Player	Rank1	Seed
URU	Pablo Cuevas	66	1
ARG	Federico Delbonis	91	2
ARG	Guido Andreozzi	99	3
BOL	Hugo Dellien	105	4
ITA	Paolo Lorenzi	113	5
BRA	Thiago Monteiro	115	6
ARG	Juan Ignacio Londero	118	7
ARG	Facundo Bagnis	139	8

• ¹ Rankings were as of 1 October 2018.

The following players received wildcards into the singles main draw:

• Víctor Estrella Burgos
• Emilio Gómez
• José Hernández-Fernández
• José Olivares

The following players received entry into the singles main draw using protected rankings:

• Santiago Giraldo
• Jürgen Melzer

The following players received entry into the singles main draw as alternates:

• Thomaz Bellucci
• Pedro Cachin

The following players received entry from the qualifying draw:

• Federico Coria
• Martín Cuevas
• Alejandro Gómez
• Juan Pablo Varillas

• Christian Garín def. Federico Delbonis 6–4, 5–7, 6–4.

• Leander Paes / Miguel Ángel Reyes-Varela def. Ariel Behar / Roberto Quiroz 4–6, 6–3, [10–5].

• Milex Open