The Dane revealed the diagnosis after her season ended on Thursday at the WTA Finals.
The Swiss scampers in style to win a gorgeous point against Filip Krajinovic.
Hall of Famer says it's a matter of time: Serena will win more majors.
The Czech duo becomes the 40th and 41st WTA doubles No.1s.
What keeps Roger Federer young? His answer may surprise you.
The 21-year-old gets a well-deserved rankings boost.
