Dominican catcher Wilin Rosario was signed by the Rockies as an IFA with little fanfare in 2008. He went on to destroy the Pioneer League (.316/.371.532) at the age of 19, the best performance by a PL catcher since Russell Martin's debut. He found his AA level last year, slashing .249/.284/.457 at Tulsa, and even took four dozen at-bats away from veterans in Colorado by season end. He looks like he will have the acumen and temperment to handle a pitching staff, and his catch-and-throw skills are developing rapidly. If he can remain a catcher, he could be a top prospect very soon, and it's hard not to drool a little thinking about his bat reaching Coors Field full-time in 2013 or so.