Kei Nishikori of Japan at the U.S. Open Tennis Championships in New York
Kei Nishikori of Japan hits a forehand in his second round match against Marin Cilic of Croatia on court 13 at the U.S. Open Tennis Championships in New York City on September 2, 2010. UPI/John Angelillo
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Pablo Andujar upended 10th-seeded Marin Cilic and No. 16 Gilles Simon also advanced Sunday, opening the men's singles competition at the Madrid Open.
Daniel Brands and Ivan Dodig posted upsets Friday, knocking top seeds Janko Tipsarevic and Alexandr Dolgopolov out of the BMW Open tennis tournament in Germany.
Ivan Dodig claimed a second-round upset of No. 2-seeded Marin Cilic in Wednesday's play at the BMW Open tennis tournament in Germany.
World No. 1 Novak Djokovic again needed a third set Thursday before he was able to advance to the quarterfinals of the Monte Carlo Rolex Masters.
Rafael Nadal ran his winning streak at the Monte Carlo Rolex Masters to 43 matches with a straight-set victory Wednesday.
Fabio Fognini and Roberto Bautista-Agut posted upset wins Monday in first-round play of the Monte Carlo Rolex Masters tennis tournament.
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.
Second-seeded Andy Murray needed a tiebreaker but went on to log a straight-set victory Monday in third-round action at the Sony Open in Miami.