What to watch in the ACC: Week 5 Posted Sep 27, 2012 North Carolina’s sack attack. The Tar Heels had seven sacks against ECU last week -- after totaling just six in the first three games. It was the most the program has seen in one game since 2000, and tied NC State for the most in the ACC this season. Idaho is allowing 2.25 sacks per game. UNC defensive tackle Sylvester Williams leads the team with 3.5. (ESPN.com)