(CNN) -- Former world No. 1 Venus Williams will miss the rest of the 2010 tennis season due to knee problems, meaning the American is ruled out of the Fed Cup final and the WTA Championships.
The 30-year-old, who is now third in the rankings, has not played since losing in the semifinals of the U.S. Open last month to eventual winner Kim Clijsters.
"I am very disappointed to announce that I will be unable to play in the season-ending WTA Championships and Fed Cup final," the seven-time Grand Slam champion said in statement carried by the Sports Network website.
"I have been getting treatment and therapy on my knee and have been making progress, but unfortunately must continue to keep weight off my knee for the short term and won't be ready to return to competition in 2010.
CNN
