What to watch in the ACC: Week 7 Posted Oct 11, 2012 North Carolina’s defensive line vs. Miami’s offensive line. The Canes have allowed just one sack -- Sept. 29 against NC State -- in the past four games. During that span, the Canes have averaged 492.8 yards of total offense. UNC senior defensive tackle Sylvester Williams is third in the ACC with five sacks, and UNC is fourth in the ACC with 2.5 per game. (ESPN.com)