Diaz has been shut down again due to persistent soreness in his elbow, Adam Berry of MLB.com reports.
The Pirates' catching prospect continues to deal with what the team is referring to as "lateral elbow soreness" and he will be shut down from baseball activities yet again. There was optimism in spring training that he'd avoid undergoing surgery, but Berry reports that the team is now seeking a second opinion on Diaz's injured elbow. Diaz remains on the disabled list and his timetable to return won't become clear until team doctors reassess his elbow.