September's arrival means, among other things, that Major League Baseball rosters have officially expanded. Every club can now dress up to 28 players, two more than is customary.

While there's no uniform strategy behind how teams use those additional slots -- some simply activate injured players, others bring up depth pieces like third catchers and extra relievers -- you can be forgiven if you find the most interesting employment to entail the promotion of prospects.

Fortunately, this year's crop of September callups includes some young players with exciting future prospects. Below, CBS Sports has highlighted five players in particular worth monitoring throughout the season's final month. (Do note the players are listed in no particular order.)

Let's get to it.

1. Harry Ford , C, Se

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