The Blue Devils improve to 13-0 on the year while the Bison falls to 9-3. Duke is one of just 10 remaining unbeaten teams in NCAA Division I basketball.
Duke shot 54.2 percent from the floor on the game, sinking 32-of-59 attempts. McRoberts, who had 14 points, was five-of-six with four dunks and a breakaway layup while Williams, the game's leading scorer with 23, hit on 10-of-16 field goals. The tandem combined for 37 points, 21 rebounds, five steals, three blocked shots and three assists.
Williams and McRoberts opened the game with a pair of dunks, and the Blue Devils sprinted to a 21-4 lead eight minutes into the contest. After trailing 42-19 at intermission, Bucknell scored the first nine points of the second stanza to pull within 42-28 on a three-pointer by Kevin Bettercourt. Duke then responded with a 13-0 run and Sean Dockery's conventional three-point play made the score 55-28 with 13:28 remaining on the clock. The Blue Devils would lead by as many as 35 points.
Williams collected the 1,000th rebound of his career, and the senior now ranks fifth all-time at Duke and 23rd on the ACC's career chart with 1,003 boards. The double-double for Williams marks his sixth of the season and the 49th of his career.
J.J. Redick added 22 points for the Blue Devils while Dockery contributed 10 points, eight rebounds, five assists and four steals in 33 minutes of action. Greg Paulus dished out a game-high seven assists and now has 38 helpers over his last five games. Paulus is bidding to become just the fourth freshman ever to lead the ACC in assists per game, attempting to join Virginia's Jeff Jones, Georgia Tech's Kenny Anderson and North Carolina's Ed Cota.
For Bucknell, Chris McNaughton tallied 15 points while Jason Vegotsky came off the bench to bury four three-pointers for 12 points. The Bison was forced into 20 turnovers and shot just 35.7 percent from the field.