|One of the most dynamic players in college football the last few years, Robinson is one of the more uncertain prospects for the draft. That's because he'll be making the jump from quarterback to wide receiver - or perhaps some other to-be-determined role. Robinson would be very short for an NFL QB, and he completed just 57.2 percent of his passes in four years at Michigan, leading to obvious doubts about his arm. But there's no questioning his legs after he broke the NCAA record for career rushing yards by a QB, scampering for 4,495 yards and 42 touchdowns for the Wolverines and picking up 2010 Big Ten offensive player of the year honors. NFL teams should be able to utilize his open-field explosiveness in the running game and on special teams, but they have less evidence about how well Robinson runs routes and hauls in passes. Former Indiana quarterback and Steelers and Redskins jack-of-all-trades Antwaan Randle El has been mentioned often as a comparison. "Whatever teams put me at, that's what I'm going to work my tail off to be," Robinson said. "Whatever they ask me to do, that's what I'm going to do." Robinson put up some good numbers at the NFL combine, especially in the 40-yard dash at 4.43 seconds, but there may be lingering concerns about the nerve damage in his elbow that limited him to running the ball late in the 2012 season. He was still plenty potent in the last three games, rushing for 320 yards on 46 carries, and he'll look to ride that momentum into the next level - although it remains a mystery when he'll be chosen in the draft.