What happens to college football players who don't make the NFL draft?

(CNN) – Draft day is finally here, the day every football fan looks forward to. Unless you root for the Jets.

For a college football star, the move from Saturday to Sunday could mean a signing bonus in the tens of millions of dollars, another pile of millions in endorsements, and tens of millions of viewers for the NFL and its TV partners.

But those who do not hear the commissioner call their names, may be left with a degree that isn't worth the paper on which it's printed, if they graduated at all.

CNN's Sara Ganim reports.