i would say that there's a bigger concern about him not drawing walks (he's an early in the count hitter) than there is about ability to hit for average at higher levels. he squares the ball up well and doesn't strike out much so he should continue to hit for solid average. however, a guy with a 280/310/350 line isn't worth all that much. as for his defense, i think people like his range and arm but he's only 19 and is 6'1", so if he grows another couple of inches and fills out there's a possibility that he'll outgrow the position.