Running back is a fickle position.
The window for success is short, leaving them about four to five years to be on top of their game.
With the passing of the guard always taking place at the position, there are numerous players primed for breakout seasons each year.
Last year, it was backs like Ray Rice, Cedric Benson, and Jamaal Charles who unexpectedly busted on the scene as top rushers.
So who's on deck this season?
Whether it's a rookie getting the look right away or a young back finally receiving his chance, there will be plenty of breakout backs this season.
Here's the list of the ten most likely candidates.