No. 2 Duke 80, No. 4 Wisconsin 70: Tyus Jones scored a career-high 22 points to go along with six rebounds and four assists as the visiting Blue Devils remained unbeaten by downing the Badgers in the ACC/Big Ten Challenge.

Freshman phenom Jahlil Okafor added 13 points and six rebounds to finish in double figures for the eighth straight game for Duke (8-0), which shot 65.2 percent from the floor, including 7-of-12 from beyond the arc. Rasheed Sulaimon tallied 14 points off the bench while Quinn Cook chipped in with 13 for the Blue Devils, who have won every game by double digits.

Traevon Jackson led the way with a career-high 25 points - including 8-of-8 from the foul line for Wisconsin (7-1), which had won seven of its last nine against ACC opponents. Frank Kaminsky collected 17 points and a game-high nine rebounds for the Badgers, who suffered their first lost at the Kohl Center since Feb. 1, 2014.

Neither team led by more than four points in a first half in which Duke shot 60 percent and made five of its nine attempts from 3-point range to take a 35-32 edge into intermission. Nigel Hayes converted a three-point play to put Wisconsin on top 43-42 before Sulaimon sparked an 8-1 run to give the Blue Devils their biggest lead of the game at the time at 50-44.

Justise Winslow nailed a 3-pointer and Okafor made his presence felt with three straight baskets - including a dunk - to put Duke in front 62-54. Jackson scored five straight points to cut the deficit to three with 5:06 left in the contest before the Blue Devils used a 6-0 spurt to pull away 69-60 as they improved to 14-2 in the ACC/Big Ten Challenge.

GAME NOTEBOOK: Duke went 13-of-18 from the free-throw line while Wisconsin finished 17-of-21. … Okafor has gone 26-of-36 from the field in his last three outings. … The Badgers fell to 6-3 against Top 5 teams under Bo Ryan.