Freshmen DeShields, Mavunga, Gray help No. 14 UNC women beat No. 7 Duke 64-60

Duke's Tricia Liston shoots as North Carolina's Allisha Gray (15) falls during the first half of an NCAA college basketball game in Chapel Hill, N.C., Sunday, March 2, 2014. (AP Photo/Gerry Broome) (The Associated Press)

Duke's Elizabeth Williams (1) and North Carolina's Xylina McDaniel, rear, chase a loose ball during the first half of an NCAA college basketball game in Chapel Hill, N.C., Sunday, March 2, 2014. (AP Photo/Gerry Broome) (The Associated Press)

Diamond DeShields scored 18 points while fellow freshman Allisha Gray scored all 12 of her points after halftime to help No. 14 North Carolina beat No. 7 Duke 64-60 on Sunday in the teams' regular-season finale.

Freshman Stephanie Mavunga had 12 points and 11 rebounds for the Tar Heels (22-8, 10-6 Atlantic Coast Conference), who clinched their first season sweep of the Blue Devils since the 2007-08 season. North Carolina ran off a 20-0 run spanning halftime to lead by 19 points, then watched Duke (25-5, 12-4) respond with a 16-0 burst and fight back to within a point before holding on down the stretch.

Mavunga came up big, scoring on a stickback after Duke got within 53-52 on Ka'lia Johnson's three-point play. She then kicked out to Gray for a 3-pointer then scored inside off a feed from DeShields that pushed the lead back to 60-52 with 2:02 left.