Every player on this list has draftable positions except for Denard Robinson.
During his first three seasons at the University of Michigan, Robinson spent the majority of his time playing quarterback. However, an injury knocked him out of the Nebraska game on October 27, 2012, leading to uncertainty over the course of his final two games.
In his last home game against Iowa, the All-American honorable mention split time at quarterback, wide receiver and running back. Months later at the NFL Scouting Combine, he worked out as a wide receiver.
He had a less than impressive showing, and scouts quickly became skeptical of his pro potential as a wideout, which leads me to believe his best chance at making an impact in the league will come as a running back.
Robinson is a dynamic playmaker when given the opportunity to operate in open space. As an NFL player, he reminds me of Joshua Cribbs. Both players were college quarterbacks, and both passed and rushed for over 1,000 yards in multiple seasons.
Even though he is without a position, there will be an NFL team that uses a Day 3 pick on him because of his compelling versatility.