MLB Pipeline released a combination mock draft earlier this week, with both Jonathan Mayo and Jim Callis making their own picks for the top 15 spots in the draft. The Pittsburgh Pirates have the 12th overall selection in this year's draft, which begins on June 12th and runs for three days.

Both Mayo and Callis have the Pittsburgh Pirates selecting high school first baseman Nick Pratto. Callis calls Pratto the best prep bat in this draft class, and while he's also an accomplished pitcher, he projects much better as a hitter. Mayo notes that the Pirates have a history of selecting players who performed well in the National High School Invitational and he believes they are going with a bat for the first pick.

Since the two main contributors at MLB Pipeline believe the Pirates could take...

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