Avila (knee) has been shut down due to renewed soreness, and he's waiting for the results of an MRI, James Schmehl of MLive Media Group reports. Tigers manager Brad Ausmus said the soreness is only minor, according to MLB.com's Jason Beck. Although it's possible the Tigers are just being cautious, it may also be the case that Avila suffered a legitimate setback. The catcher just resumed baseball activities last week, and no timeline for a potential return has been provided.