Serena Williams out of the Australian Open after fourth round defeat . We all know what kind of champion she is . '' The American was beaten 7-6 6-4 by Russian Ekaterina Makarova in a match that lasted just over two hours. Williams blames her loss on a `` tremendous amount of errors '' In the men 's draw , Novak Djokovic sets up quarterfinal against old foe Stanislas Wawrinka .
Serena Williams out of the Australian Open after fourth round defeat . The American was beaten 7-6 6-4 by Russian Ekaterina Makarova in a match that lasted just over two hours. Williams blames her loss on a `` tremendous amount of errors '' In the men 's draw , Novak Djokovic sets up quarterfinal against old foe Stanislas Wawrinka .