Ryan Kelly had 18 points and 12 rebounds to help No. 7 Duke beat Pennsylvania 85-55 on Sunday.
Seth Curry added 15 points for the Blue Devils (12-1), who scored 20 of the game's first 24 points to run out to a big early lead. Duke led by 18 points at halftime and by as many as 34 points after the break, sending the Blue Devils to their fifth straight victory overall and 43rd straight at Cameron Indoor Stadium.
Zack Rosen had 11 points for the Quakers (6-8), who played the Blue Devils almost even for the rest of the half after the opening flurry. But Penn's undersized front line couldn't keep Duke off the boards, with the Blue Devils finishing with a 47-29 rebounding advantage and getting several quick second-chance baskets that helped them take control.
In fact, Duke grabbed as many offensive boards (8) as Penn had total rebounds in the first 12 minutes. Duke had a 14-2 edge in second-chance points by then, starting when Kelly scored the game's first basket in fitting fashion with a hook shot following a missed 3 from Curry.
Kelly followed that with a 3 during that opening spurt, which ended with Mason Plumlee's layup off a feed from Quinn Cook to make it 20-4 at the 13:50 mark. The Blue Devils scored on nine of 10 possessions, with four of those baskets coming off offensive rebounds.
By that point, it looked like Duke was on track to follow its 110-70 win against Western Michigan two days ago with another huge scoring day. But the Blue Devils slowed a bit and the Quakers finally settled in to hang around.
Penn had a chance to close within 15 points midway through the second half, but Miles Cartwright missed a wide-open 3 from the corner. The Blue Devils responded with a 3 from Andre Dawkins, followed by a jumper from Curry and finally a 3 from Curry off a feed from Dawkins to make it 60-34 with 12 minutes left.
Plumlee finished with 10 points and 14 rebounds for Duke, which shot 49 percent. The Blue Devils hit 9 of 20 3-pointers, with Kelly hitting all four of his tries and Curry knocking down three more.
Penn shot 36 percent, including 2 for 13 from behind the arc.