Serena Williams returns a shot to Yaroslava Shvedova, of Kazakhstan, during a third round match at the U.S. Open tennis tournament Saturday, Aug. 31, 2013, in New York. (AP Photo/Darron Cummings)
China's Yang Junjing, center and other players celebrate after winning over Japan during their World Grand Prix Finals woman's volleyball match in Sapporo, northern Japan, Saturday, Aug. 31 2013. (AP Photo/Koji Sasahara)
Pakistan player celebrate the wicket of Zimbabwean batsman Vusimusi Sibanda during the one day international series against Zimbabwe in Harare, Saturday, Aug, 31, 2013. Pakistan is in Zimbabwe for a month long tour which will also see them playing Test matches against the hosts. (AP Photo/Tsvangirayi Mukwazhi)