Holding Down the Trenches Posted Apr 19, 2011 North Carolina is replacing a lot of players heading into the 2011 season on the gridiron, but one area in which the Tar Heels are going to be deep and experienced is at defensive tackle.UNC welcomes back all of its top interior defensive performers from a year ago, including multi-year starter Tydreke Powell and others such as Jordan Nix and Jared McAdoo. (Rivals.com)