Peter Abraham reports:

the lingering weakness in his shoulder was diagnosed as merely a strain by Royals team doctor Steven Joyce. Posada is expected to miss no more than a week. ...

Joyce based his opinion on an MRI taken yesterday. Dr. James Andrews, who performed the surgery on Posada in 2001, will examine the results of the test today, as will Yankees doctor Stuart Hershon. Unless their opinion is different, Posada should be spared a stint on the disabled list.