Wilkin Castillo

If there were a versatility competition in the Arizona organization, Castillo would run away with the gold medal. Primarily a catcher, Castillo played the bulk of his games behind the plate, while logging a combined 35 contests between second base, shortstop and third. Defensively, he's the team's best prospect behind the plate, but he's got enough speed (18-for-32 steals) that a utility role down the road isn't out of the question if he's able to be more selective on the basepaths and at the plate (17:62 BB:K in 410 at-bats).