There was no qualifying for the tournament. The participating countries were Argentina, Brazil, Chile and Uruguay. The teams plays in a single round-robin tournament, earning two points for a win, one point for a draw, and zero points for a loss.
The match between Uruguay and Chile played on July 2 was the first time in history a country fielded black players in an international tournament. Uruguay fielded Isabelino Gradin and Juan Delgado and their racial background became an issue with Chile. Chile complained before and after the match that the Uruguayans were unfairly selecting "Africans".
1.^ The match between Argentina and Uruguay played on July 16 had to be abandoned at 0-0 after only 5 minutes due to a riot within the spectators. The riot spilled over into the field and the clash finished with the wooden tribunes on fire. The match couldn't be rescheduled in the Estadio G.E.B.A., and so the match was replayed at Estadio Racing Club. The partial result of the match in Estadio G.E.B.A. was declared null and overtaken by the one in Avellaneda.