Since Wang injured his right foot June last season, Wang hasn't run for his conditioning. Yankees is afraid of getting Wang injured his foot again. They only allow him to run on the bike to do his conditioning work. According to Taiwanese media, Wang started running on the outfield first time since injury yesterday. Yankees figures out lack of running may affect his delivery. That is why they start to let him run. After running on the outfileld, Wang says he feels the balance is better.
This is the video from TVBS(a Taiwanese new channel). At the end of video, you can see Wang running on the outfield.
By the way, Gator contacts with Eiland and tells him what he thinks about what is wrong with Wang. Gator says he sees some problems from Wang's delivery. Some problems usually indicate there are some parts of Wang's body not healthy.