No. 1-seed Janko Tipsarevic had little trouble advancing to the quarterfinals with a straight-set win Thursday at the BMW Open in Germany.
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Andy Murray and David Ferrer both had to go three sets Friday before setting up a championship confrontation at the Sony Open.
No. 2 seed Andy Murray eliminated Marin Cilic on the seventh match point Thursday to reach the semifinals of the Sony Open.
Tommy Haas kept alive his chances for what would be a special championship Wednesday by earning a semifinal berth at the Sony Open.
Tommy Haas was solid on the serve Tuesday and upset defending champion Novak Djokovic of Serbia 6-2, 6-4 at the Sony Open in Miami.
Top-seeded Novak Djokovic and No. 3 David Ferrer each knocked out a straight-set victory in third-round play Sunday, advancing at the Sony Open in Miami.
Rafael Nadal and Roger Federer set up a quarterfinal meeting Wednesday with hard-fought victories at the BNP Paribas Open.
Top-seeded Novak Djokovic and No. 3 Andy Murray each needed three sets to record second-round victories Sunday at the BNP Paribas Open.
Top-seeded John Isner and No. 2 Tommy Haas each fell in upsets Saturday, sending Edouard Roger-Vasselin and Ernests Gulbis into the Delray Beach final.