Scouting prospects who will be future big-league stars is an inexact science. Middle infielders can be hard to project because defense often outweighs offense at those positions. For every player who went on to become a superstar right away like Corey Seager or Francisco Lindor, there's another one who never panned out like Dustin Ackley or Nick Franklin (sorry, Mariners fans). Others just need more time to adjust to life in the big leagues, breaking out well after the hype around them quiet[...]