Istanbul: Victoria Azarenka of Belarus made sure of finishing the year as the top-ranked player in the world by beating Li Na of China 7-6 (4), 6-3 at the WTA Championships on Friday.
Azarenka secured a spot in the semifinals and will next play Maria Sharapova.
"It's kind of difficult to believe that a little girl from Belarus is on that list," Azarenka said. "It's really incredible achievement. When I started to play tennis I had this big picture in my head that I want to be there. Back then it's so far away. It's like pretty much touching the sky.