Heels' defense moving the line Posted Aug 15, 2010 North Carolina's defensive line has undergone a shuffle during the first week of preseason training camp stemming from the uncertainty surrounding Tar Heels defensive tackle Marvin Austin's eligibility for the season-opener -- and beyond. Austin was expected to start for the fourth straight year at left defensive tackle but has lined up mostly with the second team in practice so far. (Durham Herald-Sun)