SPORTSSerena, Venus Williams in Australian Open finalSerena Williams exults on the court after the final point of her championship match victory over her sister Venus.Peter Parks, AFP/Getty ImagesSerena Williams celebrates with the Australian Open trophy after setting the record for most Grand Slam singles titles in the Open era with 23.Clive Brunskill, Getty ImagesSerena Williams poses with the trophy after defeating her sister Venus for the Australian Open championship.Aaron Favila, APVenus and Serena Williams share a laugh after the trophy presentation following Serena's victory in the Australian Open final.Paul Crock, AFP/Getty ImagesSerena Williams, right, celebrates after defeating her sister, Venus, in the final as her sister waits to congratulate her on the championship.Andy Brownbill, APSerena (right) and Venus Williams pose with their trophies after the Australian Open final.Aaron Favila, APVenus Williams addresses the crowd after her loss to her sister Serena.Dita Alangkara, APSerena and Venus Williams embrace after the championship match.Scott Barbour, Getty ImagesSerena Williams bounces a ball as she prepares to serve to her sister during the Australian Open final.Mark R. Cristino, EPAFull-court view of the Australian Open championship match between Venus and Serena Williams.Michael Dodge, Getty ImagesVenus Williams wipes sweat away from her face during the Australian Open final.Kin Cheung, APVenus Williams serves against Serena Williams during the Australian Open final.Saeed Khan, AFP/Getty ImagesSerena Williams reacts while hitting a shot during the Australian Open final.Made Nagi, EPAVenus Williams hits a return against her sister, Serena Williams, during their women's singles final at the Australian Open.Saeed Khan, AFP/Getty ImagesSerena Williams signals to the chair umpire for a review of a line call during the Australian Open final.Aaron Favila, APVenus Williams reacts after a point during the Australian Open final.Made Nagi, EPASerena Williams lunges for a return during the Australian Open final.Made Nagi, EPAVenus Williams makes a forehand return to her sister Serena during the women's singles final at the Australian Open on Jan. 28.Kin Cheung, APVenus Williams and Serena Williams pose for a photo before their match at the Australian Open.Quinn Rooney, Getty ImagesSerena Williams serves in her women's final match against Venus Williams at the Australian Open on Jan. 28.Quinn Rooney, Getty ImagesSerena Williams smashes her racket onto the court in frustration while playing against Venus Williams the US during the women's singles final of the Australian Open on Jan. 28.PAUL CROCK, AFP/Getty ImagesAlexis Ohanian attends the women's final match between Venus Williams and Serena Williams during the Australian Open on Jan. 28.Scott Barbour, Getty ImagesVenus Williams reacts after losing a point to her sister Serena during the women's singles final at the Australian Open on Jan. 28.Andy Brownbill, AP