It seems like every draft candidate or prospect in the minors gets overrated defensively (some more than others), and their defensive ability (if they do have it) can deteriorate quickly. As just one example, are some of the defensive quote about Arcia from Baseball Prospectus over the past few years: 2011: He's a good athlete for his size and has good outfield instincts. 2012: He's not special in the outfield, but hardly a liability 2013: arm is at least solid-average; will play in right field. Good athlete for his size, but lacks average run; limited to a corner spot Based on my observations (and backed by some of the defensive metrics), it turns out that Arcia was one of the worst defensive outfielders in all of baseball last season. Also, consider the players that the Twins selected to play shortstop over the past few years - Dozier, Plouffe, Nishioka. It became very apparent very quickly that they were unable to handle the position. Long story short, I drop every prospect at least a step from the scouting reports. Shortstop projected to be average? Then I think he is probably terrible and not really a shortstop. Plus centerfielder? Hopefully will be average in the majors. For me, the kiss of death for a prospect defensively is "he should be able to handle/stick at the position." Regarding Turner defensively, I'm starting to think of Billy Hamilton. Hamilton also started off as a shortstop, but despite world-class speed, has had to move to the outfield. If there are any doubts about Turner staying at shortstop, that is a huge red flag for me.