Duke was the ACC's preseason favorite and North Carolina the defending national champion.
The conference leader and highest-ranked team so far: Virginia.
Picked to finish sixth in the ACC preseason poll, the Cavaliers (15-1, 4-0) have been the conference's most consistent team so far this season behind their still-stifling defense.
Virginia (16-1, 5-0 ACC) moved up a spot to No. 2 and received a first-place vote in the AP Top 25 released on Monday, its highest ranking since reaching No. 2 in the 2014-15 season.
The Cavaliers, No. 1 in KenPom.com's defensive efficiency rankings, beat Syracuse and North Carolina State last week.
"They've taken care of...