No. 17 Duke 80,?No. 18 Pittsburgh 65

Jabari Parker scored 21 points, reserve guard Andre Dawkins added 20 and Duke pulled away from host Pittsburgh on Monday night.

Amile Jefferson chipped in a season-high 14 points for the Blue Devils (17-4, 6-2 ACC), which brought Pitt’s hot start in its first Atlantic Coast Conference season to an abrupt halt. Duke made 13-of-25 3-point attempts, including four during a 15-3 run midway through the second half that broke open a tight game.

Lamar Patterson had 14 points for the Panthers (18-3, 6-2) who fell to 12-1 at home when they couldn’t keep up with the Blue Devils.

Parker helped Duke fend off some early game jitters before Dawkins poured it on. The senior drilled 6-of-7 3-point attempts to lift the Blue Devils to their fifth straight victory.

No. 23 Oklahoma 88,?No. 8 Oklahoma State 76

Ryan Spangler had 15 points and a career-high 17 rebounds to help host Oklahoma defeat Oklahoma State.

Jordan Woodard scored 18 points and reserve Tyler Neal added a season-high 15 points for the Sooners (17-4, 6-2 Big 12), who won their fourth straight game and claimed their third win over a ranked conference opponent this season.

Marcus Smart had 22 points, Phil Forte scored 20 points and made all six of his 3-point tries and Markel Brown added 18 points for the Cowboys (16-4, 4-3).

OSU’s Le’Bryan Nash, who scored a career-high 29 points against West Virginia on Saturday, fouled out with eight points in 17 minutes.

It was the first time both teams have entered a “Bedlam” rivalry game ranked since 2005. The rematch is Feb. 15 at Oklahoma State.

No. 9 Villanova 65, Georgetown 60

James Bell scored 16 points, and Villanova prevailed in a messy, foul-plagued game of stops and starts for a victory over host Georgetown, the Hoyas’ fifth straight loss.

Daniel Ochefu added 12 points on 5-for-5 shooting for the Wildcats (18-2, 7-1 Big East), who forced 18 turnovers while committing 16. Villanova made 22-of-28 free throws and moved into a tie with first-place Creighton atop the Big East.

Markel Starks scored 20 points for the short-handed Hoyas (11-9, 3-6), whose roster underwent two more changes before the game. Georgetown has its longest losing streak since 2011 and has dropped three straight at home for the first time since 2009.