1.   But she twisted her knee when she fell on her opening vault.

2.   Khorkina made a difference even before her opening vault.

3.   Khorkina, who once posed for Playboy, made a difference even before her opening vault.

4.   Two-time Olympian Shannon Miller pulled out of the Olympic gymnastic trials after jamming her knee on her opening vault.

5.   Two-time Olympian Shannon Miller pulled out of the Olympic gymnastic trials Sunday after jamming her knees on her opening vault.