Rafael Nadal sits on the court after stumbling during his men's singles quarterfinal match against Andy Murray at the Australian Open in Melbourne on Tuesday, January 26, 2010. Photo: AP
Rafael Nadal walks off the court, after retired injured from his men's singles quarterfinal match against Andy Murray. Photo: AP
Andy Murray reacts to a point won against Rafael Nadal. Photo: AP
Rafael Nadal (L) talks with Andy Murray after Nadal retired injured from their men's singles quarterfinal match. Photo: AP
Marin Cilic (L) greets Andy Roddick after Cilic's victory in their men's singles quarterfinal. Photo: AP
Andy Roddick in action at the Australian Open. Photo: AP
Marin Cilic sinks to his knees as he celebrates after beating Andy Roddick. Photo: AP
China's Zheng Jie celebrates after beating Russia's Maria Kirilenko to win their women's singles quarterfinal. Photo: AP
Justine Henin celebrates after beating Nadia Petrova to win their women's singles quarterfinal match. Photo: AP
Nadia Petrova reacts to missing a point against Justine Henin. Photo: AP