vitters' numbers scream "second coming of howie kendrick" which might be nice for a middle infielder, but not so much for a 3B. So you'd rather "judge" 361 AB's over 3 years for a 19 year-old rather than scouting reports concerning his upside? Interesting. He's been at worst moderately impressive in his limited action. Go ahead and doubt his defense if you'd like, but there is absolutely no reason to be pessimistic to his upside at this point of his career.