Former third-ranked player Nikolay Davydenko has confirmed his retirement from tennis.
Top-seeded Philipp Kohlschreiber cruised into the quarterfinals of the Duesseldorf Open by beating Teymuraz Gabashvili 6-3, 6-1 on Wednesday.
Defending champion Juan Monaco eased past Benjamin Becker 6-2, 6-1 to reach the second round of the ATP Duesseldorf Open on Tuesday.
Top-ranked Rafael Nadal will look to get his clay court season back on track against Albert Ramos at the Barcelona Open after his fellow Spaniard won on Tuesday in the first round.
David Ferrer will begin a 12th quest for a first Barcelona Open title by facing Teymuraz Gabashvili after the Russian beat Michal Przysiezny 6-3, 6-4 in the first round on Monday.
Lauren Davis defeated Zhang Shuai of China 6-2, 6-3 at the Sony Open on Wednesday, and former U.S. Open champion Juan Martin del Potro withdrew with a left wrist injury.
Spain's Roberto Bautista Agut knocked out Tomas Berdych on Sunday in the second round of the BNP Paribas Open, beating the fourth-seeded Czech player 4-6, 6-2, 6-4.
Defending champion Novak Djokovic needed less than an hour to advance at the Dubai Championships on Wednesday, while Roger Federer faced a struggle to seal his place in the quarterfinals.
Top-seeded Richard Gasquet and defending champion Jo-Wilfried Tsonga both reached the Open 13 quarterfinals with straight-sets wins on Wednesday.
Fifth-seeded Ivan Dodig of Croatia and No. 6 Edouard Roger-Vasselin of France reached the second round of the Open 13 in contrasting styles on Tuesday.
Veteran Marc Gicquel beat second-seeded Gilles Simon 7-6 (4), 6-3 to reach the Open Sud de France quarterfinals on Thursday.
Lukasz Kubot and Robert Lindstedt won the Australian Open men's double title in their first Grand Slam as a team, beating American Eric Butorac and South Africa's Raven Klaasen 6-3, 6-3 in Saturday's final.
Novak Djokovic stayed on track for a fourth consecutive Australian Open singles title with a 6-0, 6-4, 6-4 win Wednesday over Leonardo Mayer of Argentina as temperatures neared 108 degrees.
Ready or not, here comes the irrepressible Rafael Nadal. And no, it's not on the comfort of clay.
Milos Raonic and Vasek Pospisil set up a semifinal showdown at the Rogers Cup, overshadowing two-time defending champion Novak Djokovic and Spanish star Rafael Nadal.
Wimbledon champion Andy Murray tumbled out of the Rogers Cup on Thursday, falling 6-4, 6-3 to Lavia's Ernests Gulbis in the third round.