The last two weeks of fall practice are typically the most important for every player in a college football program: For starters and prospective starters, this is the time to solidify or claim roles, and for role players, it's often a last chance to get into a rotation without injury or ineffectiveness by a starter opening up an opportunity later in the fall.
But most of those role players at least have the chance of such an opportunity opening in the fall — for freshmen, this fortnight may be their last chance of getting into the game until next fall, if their play doesn't get them above the red line of redshirting.