There is no question that Stetson Allie has the best raw power in the Pittsburgh Pirates farm system. As far as the entire organization, the only player who would be better is Pedro Alvarez. The ball explodes off Allie's bat with little effort, making you believe that if he reaches the majors, 30 home runs could easily be accomplished.
The one problem with that is Allie's path to the majors is questionable. He dealt with some pretty bad strikeout rates in 2013, and really struggled at the plate once he made the jump to High-A Bradenton. Allie had a 27.7% strikeout rate in West Virginia, but crushed the ball with a .324/.414/.607 line in 285 plate appearances. In Bradenton he had a 28.9% strikeout rate, but dropped to a .229/.342/.356 line in 284 plate appearances.
One thing that stood out in Bradenton was a high leg kick that I hadn't seen before. Allie was crouching and raising his front leg, kind of in a Jeff Bagwell approach, which can be seen in the photo below.
Tim is the owner and editor in chief of Pirates Prospects. He started the site in January 2009, and turned it into his full time job during the 2011 season. Prior to starting Pirates Prospects, Tim worked with AccuScore.com, providing MLB, NHL, and NFL coverage to various national media outlets, including ESPN Insider, USA Today, Yahoo Sports, and the Wall Street Journal. He also writes the annual Prospect Guide, which is sold through the site. Tim lives in Bradenton, where he provides live coverage all year of Spring Training, mini camp, instructs, the Bradenton Marauders, and the GCL Pirates.