MELBOURNE, AUSTRALIA - JANUARY 22: Serena Williams of the United States of America plays a backhand in a practice session during day nine of the 2013 Australian Open at Melbourne Park on January 22, ... more 

MELBOURNE, AUSTRALIA - JANUARY 22: Serena Williams of the United States of America plays a backhand in a practice session during day nine of the 2013 Australian Open at Melbourne Park on January 22, 2013 in Melbourne, Australia. (Photo by Lucas Dawson/Getty Images) less