Russia's Ekaterina Makarova celebrates after defeating Germany's Angelique Kerber in their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 20, 2013. (AP Photo/Dita Alangkara)

Photo by: Dita Alangkara

Russia's Ekaterina Makarova celebrates after defeating Germany's Angelique Kerber in their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 20, 2013. (AP Photo/Dita Alangkara)