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Best of Australian Open - Day 4

Caroline Wozniacki of Denmark kicks a tennis ball in frustration during her women's singles second round match against Victoria Azarenka of Belarus at the Australian Open 2015 tennis tournament in Melbourne
Caroline Wozniacki of Denmark kicks a tennis ball in frustration during her women's singles second round match against Victoria Azarenka of Belarus at the Australian Open 2015 tennis tournament in Melbourne January 22, 2015. REUTERS/Athit Perawongmetha (AUSTRALIA - Tags: SPORT TENNIS) (REUTERS)
David Ferrer of Spain reacts after winning a point against Sergiy Stakhovsky of Ukraine during their men's singles second round match at the Australian Open 2015 tennis tournament in Melbourne
David Ferrer of Spain reacts after winning a point against Sergiy Stakhovsky of Ukraine during their men's singles second round match at the Australian Open 2015 tennis tournament in Melbourne January 22, 2015. REUTERS/John French (AUSTRALIA - Tags: SPORT TENNIS) (REUTERS)
Alize Cornet of France (R) shakes hands with Denisa Allertova of the Czech Republic after defeating her in their women's singles second round match at the Australian Open 2015 tennis tournament in Melbourne
Alize Cornet of France (R) shakes hands with Denisa Allertova of the Czech Republic after defeating her in their women's singles second round match at the Australian Open 2015 tennis tournament in Melbourne January 22, 2015. REUTERS/Carlos Barria (AUSTRALIA - Tags: SPORT TENNIS) (REUTERS)
Djokovic of Serbia puts on a new shirt during his men's singles second round match against Kuznetsov of Russia at the Australian Open 2015 tennis tournament in Melbourne
Novak Djokovic of Serbia puts on a new shirt during his men's singles second round match against Andrey Kuznetsov of Russia at the Australian Open 2015 tennis tournament in Melbourne January 22, 2015. REUTERS/Issei Kato (AUSTRALIA - Tags: SPORT TENNIS) (REUTERS)
Pospisil of Canada celebrates after defeating Lorenzi of Italy during their men's singles second round match at the Australian Open 2015 tennis tournament in Melbourne
Vasek Pospisil of Canada celebrates after defeating Paolo Lorenzi of Italy during their men's singles second round match at the Australian Open 2015 tennis tournament in Melbourne January 22, 2015. REUTERS/Stringer (AUSTRALIA - Tags: SPORT TENNIS TPX IMAGES OF THE DAY) (REUTERS)
Cibulkova of Slovakia shakes hands with Pironkova of Bulgaria after winning their women's singles second round match at the Australian Open 2015 tennis tournament in Melbourne
Dominika Cibulkova (R) of Slovakia shakes hands with Tsvetana Pironkova of Bulgaria after winning their women's singles second round match at the Australian Open 2015 tennis tournament in Melbourne January 22, 2015. REUTERS/Thomas Peter (AUSTRALIA - Tags: SPORT TENNIS) (REUTERS)
Cibulkova of Slovakia serves to Pironkova of Bulgaria during their women's singles second round match at the Australian Open 2015 tennis tournament in Melbourne
Dominika Cibulkova of Slovakia serves to Tsvetana Pironkova of Bulgaria during their women's singles second round match at the Australian Open 2015 tennis tournament in Melbourne January 22, 2015. REUTERS/Thomas Peter (AUSTRALIA - Tags: SPORT TENNIS) (REUTERS)
Djokovic of Serbia hits a return to Kuznetsov of Russia during their men's singles second round match at the Australian Open 2015 tennis tournament in Melbourne
Novak Djokovic of Serbia hits a return to Andrey Kuznetsov of Russia during their men's singles second round match at the Australian Open 2015 tennis tournament in Melbourne January 22, 2015. REUTERS/Issei Kato (AUSTRALIA - Tags: SPORT TENNIS) (REUTERS)
Muguruza of Spain shakes hands with Hantuchova of Slovakia after defeating her in their women's singles second round match at the Australian Open 2015 tennis tournament in Melbourne
Garbine Muguruza (L) of Spain shakes hands with Daniela Hantuchova of Slovakia after defeating her in their women's singles second round match at the Australian Open 2015 tennis tournament in Melbourne January 22, 2015. REUTERS/Brandon Malone (AUSTRALIA - Tags: SPORT TENNIS) (REUTERS)
Nishikori of Japan celebrates after defeating Dodig of Croatia in their men's singles second round match at the Australian Open 2015 tennis tournament in Melbourne
Kei Nishikori of Japan celebrates after defeating Ivan Dodig of Croatia in their men's singles second round match at the Australian Open 2015 tennis tournament in Melbourne January 22, 2015. REUTERS/Thomas Peter (AUSTRALIA - Tags: SPORT TENNIS) (REUTERS)

Former world No. 1 Caroline Wozniacki will have to keep waiting for that first Grand Slam title. This year's No. 8 seed fell to Victoria Azarenka in the second round of the Australian Open on Thursday, 6-4, 6-2.
Danielle Elliot