From Comcast SportsNetNEW YORK (AP) -- Didn't take long for Serena Williams to show her fourth-round opponent at the U.S.
From Comcast SportsNetMELBOURNE, Australia (AP) -- A dominating win by Roger Federer in his 1,000th career match and a more difficult workout for Rafael Nadal set up a rare Grand Slam marquee semif
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