Tommy Robredo defeated home favorite David Nalbandian 6-4, 6-4 to reach the semifinals of the Copa Claro clay-court tournament Saturday.
Thomaz Bellucci of Brazil defeated Chile's Paul Capdeville to reach the quarterfinals of the Movistar Open.
Former champion Jose Acasuso beat wild card Hans Podlipnik-Castillo 6-1, 6-1 in the Movistar Open.
Roger Federer hung on to beat Jose Acasuso of Argentina 7-6 (8), 5-7, 7-6 (2), 6-2 and advance to the third round of the French Open.
Jose Acasuso broke Tommy Robredo at the end of both sets to beat him 7-5, 6-2 in their fourth meeting in four weeks and reach the Mexican Open semifinals.
Tommy Robredo and Jose Acasuso will meet in the semifinals for the third time in three weeks after straight-set wins in the Copa Telmex quarterfinals on Friday.
Two-time finalist Jose Acasuso defeated Fabio Fognini of Italy 6-4, 6-3 in the second round of his hometown Copa Telmex.
Tommy Robredo easily defeated Jose Acasuso 6-2, 6-1 to reach the Brazil Open final on Friday, avenging a loss to the Argentine just last week.
Fernando Gonzalez of Chile on Sunday defeated Jose Acasuso of Argentina 6-1, 6-3 to win the Movistar Open for the fourth time.
Former champion Jose Acasuso is back in the Movistar Open final after beating Tommy Robredo of Spain 5-7, 6-2, 6-4 on Saturday.
Fernando Verdasco defeated Jose Acasuso 6-3, 6-7 (3), 4-6, 6-3, 6-1 Sunday, giving Spain its third Davis Cup title by upsetting Argentina in the final.
Argentina number one Juan Martin del Potro was replaced by Jose Acasuso for the first reverse singles in the Davis Cup final on Sunday due to injury.
Jose Acasuso replaced off-form Guillermo Canas as Argentina named its team for the Davis Cup final at home to Spain later this month.
Dmitry Tursunov of Russia needed just 48 minutes to reach the third round of the Open de Moseille, beating Jose Acasuso of Argentina 6-2, 6-2 Wednesday.
Carlos Moya defeated top-seeded Richard Gasquet of France 6-2, 6-4 Saturday and will face defending champion Gilles Simon in the BCR Open Romania final.
Second-seeded Gilles Simon defeated fellow Frenchman Florent Senna 6-2, 6-3 Friday to advance to the semifinals of the BCR Open Romania.