Over the last few years, the Pittsburgh Pirates have had more than their fair share of breakout prospects. Gregory Polanco and Alen Hanson stepped up in West Virginia in 2012. Tyler Glasnow emerged in 2013 at the same level. Guys like Nick Kingham, Stetson Allie, and Joely Rodriguez also improved their stock. The one thing about Polanco, Hanson, and Glasnow is that they were not only breakout prospects on a local level, but they were also breakout prospects in all of baseball.

The Pirates entered the 2014 season primed for another set of breakout prospects. They had a system loaded with top prospects and a lot of potential breakout candidates in the lower levels. That's probably why they were universally ranked one of the top three farm systems in the game.

In a way, Polanco has been...

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