Zach Cozart, SS, Low-A Dayton (Reds)
A second-round pick last year, Cozart entered pro ball as an outstanding defensive shortstop with little offense to offer. The first part of that equation hasn't changed, but the offensive aspect of his game has taken a shocking turn. After hitting just two home runs over 184 at-bats in last year's pro debut, Cozart just slugged his 11th and 12th home runs of the season over the weekend, and is now hitting a shocking .269/.330/.470 in 70 games for the Dragons. The on-base skills are still lacking, but the power development is downright shocking, and all he needed was some kind of offensive upside to project as an everyday player in the big leagues, because the defense really is that good.