Yao Jinnan: China
Yao Jinnan is the 2011 World AA Bronze Medalist. She came in third with a fall on beam, if she had not fallen, she would have won (most likely). She’ll be challenging for the AA, and a major player on China’s depleted team. She’ll likely compete all events in the team final.
Her vault could potentially cost her the gold. As far as I (or anyone knows) she is currently doing a double twisting Yurchenko vault, which is worth a 5.8. Many other top competitors will be doing the Amanar vault, a Yurchenko vault with 2 1/2 twists, which is worth a 6.5. This means Yao Jinnan will have a .7 deficit to make up somewhere else.
These are her routines from the 2011 Worlds. This video also calculates her D score, or difficulty start value for her routine. It’s really cool to watch, because you can learn a lot of the names of the elements.