The good news: Roy Williams has been very good when facing a team for a third time in a season.
The Tar Heels are 13-5 in third-time games under Williams.
The Tar Heels (24-9) get a third shot at the Blue Devils (26-6) on Friday night at the Barclays Center in Brooklyn in the semifinals of the ACC tournament.
The bad news: Duke coach Mike Krzyzewski is 9-3 against UNC in the ACC tournament and 2-0 against Williams.
The Tar Heels lost to the Blue Devils last year in the ACC tournament semifinals in Brooklyn and in the 2011 tournament championship game in Greensboro.
UNC won the first meeting of the regular season, 82-78 in Chapel Hill on Feb. 8, and the Blue Devils held serve at home, 74-64 on March 3.
This is the 22nd time Duke and Carolina are playing in the ACC tournament. The Devils have won the past six and have a 13-8 advantage.
No. 6 seed UNC vs. No. 2 seed Duke
When: 9:30 p.m., Friday
Where: Barclays Center, Brooklyn, N.Y.
TV/radio: ESPN, 106.1-WTKK