Alabama offensive guard Chance Warmack is currently NFLDraftScout's No. 1-rated interior lineman for the 2013 NFL Draft and he deserves that distinction. But the gap between Warmack and Tar Heels' guard Jonathan Cooper isn't as big as most think -- and the distance between them on the draft board is shrinking. Cooper, who has started 44 games for North Carolina over the past four seasons, has seen time at both guard and center. He is very athletic for the position with excellent foot quickness and body control to easily pull and get create run lanes. Cooper mirrors well and plays with the leverage to hold his ground at the point of attack, but the most impressive part of the blockers' game is that he looks just as natural in space 20 yards downfield. His coaching staff raves not only about his athleticism and football instincts, but also his character both on and off the football field. Cooper isn't overpowering and lacks a mauling attitude, but scouts continue to be impressed with his foot quickness and agility and he will continue to inch-up draft boards between now and April. It's rare that interior offensive linemen are drafted top-20, but this year's class has two that are worthy with Warmack and Cooper.