Grigor Dimitrov came back to beat second-seeded Andy Murray 4-6, 7-6 (5), 7-6 (3) in a marathon match that ended early Saturday to book a spot in the Mexican Open final.
Top-seeded Tommy Haas came back to defeat Horacio Zeballos of Argentina 6-3, 5-7, 6-2 to advance to the Brazil Open semifinals on Friday.
Top-seeded David Ferrer withdrew from his Mexican Open quarterfinal against South Africa's Kevin Anderson in the second set Thursday with a left leg strain.
Top-seeded David Ferrer defeated fellow-Spaniard Feliciano Lopez 7-6 (1), 6-2 on Wednesday to advance to his fifth-straight Mexican Open quarterfinals.
Third-seeded John Isner became the first upset of the Mexican Open, losing 7-6 (4) 7-6 (5) to Croatia's Ivo Karlovic in the first round Tuesday.
Top-ranked Rafael Nadal survived a scare at the Rio Open on Saturday, fighting off two match points before defeating fellow Spaniard Pablo Andujar 2-6, 6-3, 7-6 (10) to advance to the final.
Top-seeded Rafael Nadal reached the semifinals of the Rio Open, showing no problems with a sore back in defeating Joao Sousa of Portugal 6-1, 6-0 on Friday.
Second-seeded David Ferrer overcame a tough first set to advance to the Rio Open quarterfinals with a 7-6 (2), 6-1 win over Argentina's Federico Delbonis on Wednesday.
Rafael Nadal showed no signs of a tender back Tuesday, defeating fellow Spaniard Daniel Gimeno-Traver 6-3, 7-5 in the first round of the Rio Open.
David Ferrer of Spain has won his third straight Copa Claro title, defeating Fabio Fognini 6-4, 6-3 Sunday on outdoor clay in the Argentine capital.
Top-seeded David Ferrer and No. 2 Fabio Fognini of Italy will contest the final of the Copa Claro in the Argentine capital.
Top-seeded David Ferrer defeated fellow Spaniard Albert Ramos 6-1, 6-2 on Friday to reach the semifinals of the Copa Claro tournament in the Argentine capital.
Two-time defending champion and top-seeded David Ferrer of Spain defeated Santiago Giraldo of Colombia 6-4, 7-6 (1) on Thursday to reach the quarterfinals of the Copa Claro clay-court tournament.
Second-seeded Fabio Fognini of Italy reached the quarterfinals of the Copa Claro Wednesday, defeating Leonardo Mayer of Argentina 6-7(4), 6-3, 6-2.
Top-seeded David Ferrer of Spain defeated Maximo Gonzalez of Argentina 7-6 (7), 6-4 Tuesday to reach the second round of the Copa Claro clay-court tournament.
Third-seeded Tommy Robredo reached the second round of the Copa Claro clay court tournament with a 6-4, 6-4 win over fellow-Spaniard Pablo Carreno Busta on Monday.