Roberta Vinci

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From Comcast SportsNetNEW YORK (AP) -- Didn't take long for Serena Williams to show her fourth-round opponent at the U.S.

2y

From Comcast SportsNetMELBOURNE, Australia (AP) -- Novak Djokovic overcame his breathing problems and a "physical crisis" to beat Andy Murray in an almost five-hour Australian Open semifi