John McEnroe and Rick Leach defeated Javier Frana and Christian Miniussi 6-7, 6-2, 6-2, 6-1 Saturday to give the United States an insurmountable 3-0 lead in its first-round Davis Cup match against Argentina.
Sunday, Pete Sampras beat Alberto Mancini 6-4, 6-1 and Andre Agassi defeated Martin Jaite 7-5, 6-3 to complete the sweep. The United States will face Czechoslovakia in the quarterfinals next month in Florida. Czechoslovakia beat Belgium 5-0 in its first-round match.In other first-round matches, Brazil scored a stunning 3-1 victory over Germany on Sunday as Jaime Oncins beat Markus Zoecke 1-6, 6-4, 7-6 (7-3), 2-6, 7-5, Italy beat Spain 4-1, Sweden defeated Canada 3-2, Switzerland beat the Netherlands 4-1, France defeated Britain 5-0 and Australia beat Yugoslavia 5-0.