Top seed Agnieszka Radwanska loses to Kim Clijsters at the Australian Open . You ca n't do anything more than that . Wozniacki will lose world No . 1 spot and is still searching for a eighth grand slam title . Defending champion Clijsters to face first seed Victoria Azarenka in the semifinals . Belarus ' Agnieszka Radwanska came from one set down to beat eighth seed Azarenka .
Top seed Agnieszka Radwanska loses to Kim Clijsters at the Australian Open . Wozniacki will lose world No . 1 spot and is still searching for a eighth grand slam title . Defending champion Clijsters to face first seed Victoria Azarenka in the semifinals . Belarus ' Agnieszka Radwanska came from one set down to beat eighth seed Azarenka .