Seeds • 1 Rankings as of 11 February 2019.
Other entrants The following players received wildcards into the singles main draw: •
Lucas Gómez •
Alex Hernández •
Gerardo López Villaseñor •
Luis Patiño •
Manuel Sánchez The following players received entry into the singles main draw using protected rankings: •
Facundo Mena •
Daniel Nguyen The following player received entry into the singles main draw as an alternate: •
Johannes Härteis The following players received entry into the singles main draw using their ITF World Tennis Ranking: •
Matías Franco Descotte •
João Menezes •
João Souza •
Camilo Ugo Carabelli The following players received entry from the qualifying draw: •
Manuel Guinard •
Gonzalo Villanueva == Champions ==