Australia

7eac410319ea9b03490f6a7067000023.jpg

Agnieszka Radwanska of Poland celebrates after defeating Victoria Azarenka of Belarus during their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014.(AP Photo/Rick Rycroft)

c4d4d7cb19e19b03490f6a7067008cdd.jpg

Agnieszka Radwanska of Poland, left, shakes hands with Victoria Azarenka of Belarus at the net after Radwanska won their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014.(AP Photo/Rick Rycroft)

30bca6971bbda403490f6a706700fcac.jpg

Roger Federer of Switzerland signs autographs for fans after defeating Andy Murray of Britain in their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014.(AP Photo/Aaron Favila)

dddc05f81ba7a403490f6a706700f79f.jpg

Roger Federer of Switzerland celebrates after defeating Andy Murray of Britain during their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014.(AP Photo/Rick Rycroft)

8022b69d1bbba403490f6a706700f721.jpg

Roger Federer of Switzerland waves after defeating Andy Murray of Britain in their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014. (AP Photo/Aaron Favila)

06ddce461a049c03490f6a706700f1a4.jpg

Victoria Azarenka of Belarus speaks during a press conference after her quarterfinal loss to Agnieszka Radwanska of Poland at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014. (AP Photo/Shuji Kajiyama)

a1de166e19af9a03490f6a706700f49c.jpg

Victoria Azarenka of Belarus bites a towel during a break in her quarterfinal against Agnieszka Radwanska of Poland at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014.(AP Photo/Andrew Brownbill)

d366984f1adea003490f6a706700e3cf.jpg

Grigor Dimitrov of Bulgaria lies on the court between points as he plays Rafael Nadal of Spain during their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014. (AP Photo/Aijaz Rahi)

b9562fee1aeca003490f6a7067000452.jpg

Rafael Nadal of Spain celebrates after defeating Grigor Dimitrov of Bulgaria during their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014.(AP Photo/Eugene Hoshiko)

9df7d1ac1b1ea103490f6a706700cda8.jpg

Andy Murray of Britain adjusts his cap as he plays Roger Federer of Switzerland during their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014.(AP Photo/Andrew Brownbill)

244bad691ac69f03490f6a70670051f8.jpg

Rafael Nadal of Spain walks off the court after defeating Grigor Dimitrov of Bulgaria in their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014.(AP Photo/Aaron Favila)

c877249e1b13a103490f6a7067002022.jpg

Roger Federer of Switzerland throws a towel as he plays Andy Murray of Britain during their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014.(AP Photo/Rick Rycroft)

1e38d7041bb3a403490f6a7067001138.jpg

Roger Federer of Switzerland, right, is congratulated by Andy Murray of Britain at the net after Federer won their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014.(AP Photo/Andrew Brownbill)

e9ee53ee1b8fa303490f6a706700c017.jpg

Andy Murray of Britain reacts after losing a point to Roger Federer of Switzerland during their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014.(AP Photo/Eugene Hoshiko)

e25772911b92a303490f6a7067008ea4.jpg

Andy Murray of Britain reacts after losing a point to Roger Federer of Switzerland during their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014.(AP Photo/Rick Rycroft)