Roger Federer of Switzerland  makes a backhand return to Jo-Wilfried Tsonga of France during their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 20, 2014.(AP Photo/Aijaz Rahi)

Australian Open Tennis

Roger Federer of Switzerland makes a backhand return to Jo-Wilfried Tsonga of France during their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 20, 2014.(AP Photo/Aijaz Rahi)

Top Ranked Players
More Rankings