For the rest of the game, it once again resembled the all-familiar 2000 unit that ranks a pedestrian 44th in the nation.
Early on, the defense contained Clemson quarterback Woodrow Dantzler, who, before Saturday, was the No. 11 rusher and ninth most efficient quarterback in the nation.
The defensive line got to the scrambling Dantzler and sacked him three times. Running back Travis Zachery had only 27 yards in nearly a half of football.
The Tiger wide receivers were nowhere to be found, and Clemson was forced to punt on each of its first four possessions - only half a punt less than its per-game average.
Most importantly, more than half-way through the second quarter, the Tar Heels led 17-0.
"You can't ask for much more," defensive tackle Ryan Sims said. "We didn't come in and roll over, which they probably thought we were gong to do. We just let it slip through our fingers."
With 6:33 left in the second quarter, quarterback Willie Simmons replaced Dantzler, who bruised his left foot. After filling in for Clemson's Heisman Trophy candidate, all Simmons did was throw four touchdown passes to rally the troops from a 17-point deficit to a 14-point win.
The aggressive UNC defense seemed to leave the game when Dantzler did. Simmons wasn't pressured like his predecessor was. He was sacked only once and had plenty of time to find wide receiver Rod Gardner, who finished with three touchdowns and a school-record 182 yards.