LONDON, ENGLAND - OCTOBER 18: Yilin Yang of China competes in the beam event during the Apparatus Finals on the sixth day of the Artistic Gymnastics World Championships 2009 at the at O2 Arena on October 18, 2009 in London, England ...

LONDON, ENGLAND - OCTOBER 16: Yilin Yang of China competes in the floor exercise during the Women's All Round Final on the fourth day of the Artistic Gymnastics World Championships 2009 at the O2 Arena on October 16, 2009 in ...

China's Yang Yilin competes on the balance beam during Women's qualification for the World Gymnastics Championships at the O2 Arena in London, Wednesday, Oct. 14, 2009. (AP Photo/Alastair Grant )

LONDON, ENGLAND - OCTOBER 14: Yilin Yang of China competes in the balance beam event during the second day of the Artistic Gymnastics World Championships 2009 at O2 Arena on October 14, 2009 in London, England. (Photo by Clive Rose/Getty ...