Yao

makes Ralph Sampson look small

I remember Sampson being taller than Kareem, but these recent pictures show them almost the same height.  Maybe he shrunk? (like Hulk Hogan)

[10/11/14] Yao and Shaq.  Looks like Yao grew like 5 inches.  Shaq head comes only up to his chin now whereas he used to only a few inches shorter.