At long last, MLB spring training has taken hold in Arizona and Florida.

As position players trickle in early to join the pitchers and catchers, full-squad workouts are just around the corner. Looking ahead to 2014, we have a good idea of who will be contending for playoff spots come September.

In no particular order, here’s a look at 10 key players who will play roles in shaping the postseason picture. Some are veterans, some are young up-and-comers and others are bona fide superstars trying to carry their teams, but all will be worth following throughout the year.

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