Simply put: At a school known for great running backs, Mike Rozier is the king. The winner of the 1983 Heisman, Maxwell and Walter Camp awards sits at the top of Nebraska's all-time rushing charts.

College football has had a number of successful walk-ons from the BCS era (1998-2014) to present day. From Burlsworth Trophy winners to future Super Bowl champions, here are 18 of the best.