TUCSON, Ariz. (AP) - Cooper Flagg scored 24 points, Kon Knueppel added 13 and the pair of freshmen led No. 12 Duke past No. 17 Arizona, 69-55, on Friday night in front of a sold out crowd at the McKale Center.

Flagg drove the lane and threw down a one-handed jam in traffic to give the Blue Devils a 46-33 lead with 12:27 left. The preseason All-America pick shot 10 of 22 from the field and added six rebounds and three assists.

Duke (4-1) never trailed in the second half.

Arizona (2-2), which has lost two straight, cut the margin to 54-48 on Jaden Bradley's layup with 5:40 left but couldn't get closer. Bradley led the team with 18 points and added three assists and five steals. KJ Lewis had 12 points, six rebounds and three steals.

Duke led 34-27 and had a 22-14 rebounding advantage at halftime, closing on a 6-0 run.

Knueppel grabbed his own offensive rebound, dribbled out to the perimeter and then hit a 3-pointer to give the Blue Devils a 42-31 lead with 15:33 left. It was Duke's first double-digit lead of the night.

As a team, Arizona shot 39.6% from the floor and 26.1% from the 3-point line while Duke connected at a 42.6% clip overall. 

Duke plays No. 1 Kansas on Tuesday in Las Vegas, and Arizona plays Davidson on Wednesday in the Bahamas.