Interview starts at 6:20 mark -- Ohio State great Kirk Barton tells us what it was like to be 4-0 (started all four games) against Michigan from 2004-07. Barton tells us about those games and what players deal with in the greatest rivalry in college football. Barton describes being a 19 year old in 2004 and playing in a game where the Buckeyes were big underdogs to the Wolverines. Barton is an encyclopedia of Ohio State football over the last 25 years or so.