A first-half strike from Javier Toledo handed Argentina's Estudiantes de la Plata a 1-0 victory over defending champions Atletico Nacional of Colombia in a group match of the Copa Libertadores football tournament.

Toledo struck from close range just before halftime at the Ciudad de la Plata Stadium here on Wednesday to give the hosts their first win of the campaign, reports Xinhua news agency.

Nacional, who have lost several players from last year's title-winning team, are yet to register a point from their first three matches.

In Venezuela, Chile's Deportes Iquique scored two goals either side of halftime to defeat Zamora 4-1. Argentine striker Diego Bielkiewicz bagged a brace while Manuel Villalobos and Felipe Reynero were also on target for the visitors. Nelson Perez scored a late goal for the hosts.

In other matches on Wednesday, Brazil's Santos held Colombia's Independiente Santa Fe to a 0-0 draw in Bogota, while Paraguay's Libertad defeated Brazil's Atletico Mineiro 1-0.