Minor League Ball's John Sickels lists his top 100 prospects for the upcoming 2012 MLB Draft. This isn't a mock draft, of course, but it's a great resource as you follow the draft, which begins Monday. Topping the list is high school shortstop Carlos Correa, followed by college pitchers Kyle Zimmer, Kevin Gausman and Mark Appel. Then comes two high school outfielders in Byron Buxton and Albert Almora, followed by college catcher Mike Zunino.
The consensus is that those seven players are the best available in the draft. But I've never seen a mock draft that put those players in that order, which shows how much uncertainty there still is at this late date. That's probably good for the Pirates, as it increases the chances that one of those seven players will fall to the Bucs. Almora seems to be the most likely, although Zunino's name has come up more and more as a possibility recently.
Be sure to check out SB Nation Pittsburgh's 2012 MLB Draft Primer.