Cowboys re-signed LB Ernie Sims to a one-year contract. 28-year-old Sims was signed off the street last season and racked up 44 tackles across ten appearances, starting six games. His performance was generally poor on the field, but the Cowboys hope 5-foot-11, 230-pound Sims will be more effective in Monte Kiffin's new 4-3 defense. He'll compete for a backup job.