I know it's just spring training, but Yorman Rodriguez (.350/.435/.800) has been on fire. He's laying off bad pitches, driving the ball, generally putting five tools in action. If he carries that kind of play into the season, he's going to wreck A ball.
It's easy to forget, because he's been around for so long, but he's only 20 years old. Organizationally speaking, he could be the story of 2013.