Roger Federer is interviewed by Jim Courier after beating Nikolay Davydenko at the Australian Open in Melbourne on Wednesday, January 27, 2010. Photo: AP
Roger Federer (R) and Nikolay Davydenko shake hands after Federer won their men's singles quarterfinal match. Photo: AP
Roger Federer celebrates after beating Nikolay Davydenko. Photo: AP
Nikolay Davydenko reacts to missing a point as he plays Roger Federer. Photo: AP
Mirka (C), wife of Roger Federer watches his play against Nikolay Davydenko. Photo: AP
A supporter of Roger Federer of celebrates his victory over Nikolay Davydenko. Photo: AP
Novak Djokovic returns to Jo-Wilfried Tsonga during their men's singles quarterfinal match. Photo: AP
Jo-Wilfried Tsonga reacts to a point won against Novak Djokovic. Photo: AP
Victoria Azarenka returns to Serena Williams during their women's singles quarterfinal match. Photo: AP
Andy Murray signs autographs for fans after a practice session at the Australian Open. Photo: AP
Serena Williams celebrates after beating Victoria Azarenka. Photo: AP
Venus Williams reacts after losing a point to Li Na. Photo: AP
Li Na smiles after beating Venus Williams. Photo: AP
Li Na (L) and Venus Williams greet after Li won their women's singles quarterfinal match. Photo: AP
Supporters of Li Na of China watch her match against Venus Williams. Photo: AP