In 2011, Abdullah burst onto the scene as a freshman as a dynamic kick returner. In 2012, he topped 1,000 yards rushing and took it to another level in 2013 with 1,690 rushing yards (6.0 per carry) and nine scores. He topped 100 yards in 11 games. He can catch it out of the backfield, too, making him twice the threat. When the All-Big 12 back announced he was returning for his season, it was music to the Cornhuskers' ears. (Nati Harnik/AP)