Querrey beats Stakhovsky to reach quarters in Nice NICE, France (AP) -- American Sam Querrey reached the quarterfinals of the Nice Open, beating Sergiy Stakhovsky of Ukraine 7-5, 6-3 on Wednesday....Hsieh, Niculescu lose in 2nd round at Strasbourg STRASBOURG, France (AP) -- Seeded players Hsieh Su-wei of Taiwan and Monica Niculescu of Romania were beaten Wednesday in the second round of the Strasbourg International....Top-seeded Tipsarevic upset in Duesseldorf DUESSELDORF, Germany (AP) -- Top-seeded Janko Tipsarevic lost in the second round of the Power Horse Cup on Wednesday, falling 7-6 (1), 6-1 to Argentine qualifier Guido Pella....Del Potro, Baker, Fish pull out of French Open PARIS (AP) -- Seventh-ranked Juan Martin del Potro of Argentina has pulled out of the upcoming French Open because of a respiratory virus....Stanford takes NCAA women's tennis title URBANA, Ill. (AP) -- With Kristie Ahn back in the lineup after missing parts of the last two seasons, 12th-seeded Stanford was a different team....Virginia defeats UCLA to win NCAA men's tennis URBANA, Ill. (AP) -- Virginia finally took that last step and won an NCAA men's tennis championship....Andy Murray out of French Open due to back injury LONDON (AP) -- Andy Murray withdrew from the French Open on Tuesday because of a chronic back injury and will now focus on preparing for the start of the grass-court season next month....Fognini, Stakhovsky, Mathieu advance at Nice Open NICE, France (AP) -- Fabio Fognini overcame a sloppy first set to beat Italian countryman Marco Cecchinato 1-6, 6-1, 6-2 Tuesday in the first round of the Nice Open....