From MLB Rumors:

TCU left-hander Matt Purke is out indefinitely with a sore shoulder according to Stefan Stevenson of The Star-Telegram. He will be evaluated by Dr. James Andrews later this week. Purke, who was expected to be one of the top picks in this June's draft, spoke to MLBTR's Ben Nicholson-Smith last month.
Perhaps he will fall to us when we pick in the 3rd, er ah, 2nd round (d**n compensation picks)?

Wouldn't mind taking a chance on him at that spot.