Billie Jean King will not attend the opening ceremony of the Sochi Olympics in Russia because her mother is ill.
King was chosen in December to help lead the U.S. delegation to the Sochi Games.
King told The Associated Press on Wednesday that because of her mother's "failing health, I will not be able to join the U.S. Presidential delegation at this week's opening ceremonies of the Sochi Olympics.
"It is important for me to be with my mother and my brother at this difficult time. I want to thank President Obama for including me in this historic mission and I look forward to supporting our athletes as they compete in Sochi."