Rosario is far from a finished product, as he packs just 175 pounds on his wiry 6-foot-3 frame, walked just four times in 59 games and topped the league with 28 errors. But there's still a lot to like about him. The ball jumps off his bat, and he could have plus power once he gets stronger and more disciplined at the plate. A former shortstop, he's an athletic third baseman with a strong if erratic arm. He lets his defensive struggles affect the other parts of his game, and he might benefit from a move to right field.
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