Albert Montanes of Spain and Carlos Berlocq of Argentina, the only seeded players in action on Tuesday in the Vina Del Mar VTR Open, reached the second-round with few problems.
The fifth-seeded Berlocq defeated Daniel Gimeno-Traver of Spain, 7-5, 6-0, and No. 7 Montanes won over fellow Spaniard Ruben Ramirez Hidalgo 6-2, 6-4.
The tournament is the first in a month-long stretch of clay-court events across Latin America.
The top four seeded players in the tournament have byes into the second round. Juan Monaco of Argentina is seeded No. 1 and countryman Juan Ignacio Chela is No. 2. Brazilian player Thomaz Bellucci is No. 3 and Pablo Andujar of Spain is No. 4.
In other action on Tuesday, Frederico Gil of Portugal defeated Paolo Lorenzi of Italy, 6-3, 5-7, 6-1, and Rogerio Dutra Silva of Brazil recovered from a poor start to defeat Maximo Gonzalez of Argentina, 0-6, 7-6 (3), 6-3.
Also, Jeremy Chardy of France beat countryman Eric Prodon 6-4, 6-3, and Argentine Horacio Zeballos defeated Adrian Unger of Romania 6-0, 7-5.
Local favorite Fernando Gonzalez of Chile won against Pere Riba of Spain, 6-4, 6-4, and Diego Junqueira of Argentina defeated Ricardo Mello of Brazil 6-4, 6-2. Argentine Federico defeated Chilean Nicolas Massu 6-0, 6-3.