DURHAM, N.C. (AP) _ Duke has spent more weeks at No. 1 in the last decade than any other school. The undefeated Blue Devils appear headed there again.

Carlos Boozer scored all 22 of his points in the first half as No. 2 Duke rolled over Army 91-48 Saturday night.

The lopsided win, coupled with a 72-69 loss by top-ranked Arizona against Purdue earlier in the day, should land the Blue Devils (5-0) the No. 1 spot in The Associated Press poll next week for the 41st time since 1990.

Nate James added 12 points for Duke, while Jason Williams and Nick Horvath had 10 each.

Kenny Doleac led Army (2-1), who shot 29 percent, with eight points.

Duke arrived on campus at 3:30 a.m. after edging Temple 63-61 to win the Preseason NIT championship on Friday night in New York City. But the Blue Devils showed no signs of fatigue, making 10 of their first 11 shots.

Boozer, who scored 26 in the title game against the Owls, was the main target inside, making his first six shots as Duke built a 24-9 lead seven minutes in.

The Black Knights were attempting to start 3-0 for the first time since 1980-81, but went eight minutes with only two buckets as Duke's 25-4 run salted it away.

Duke's 67-26 halftime lead tied for the third most points and third biggest margin in school history at the break.

Nine different players scored for Duke in the opening 20 minutes as the Blue Devils shot 71.1 percent and forced Army into 13 turnovers.

The 6-foot-9 Boozer was 10-for-12 in the opening half as Duke made 27 of 38 from the field.

Coach Mike Krzyzewski rested his starters for most of the second half as the Blue Devils get ready to play No. 8 Illinois on Tuesday night in the ACC-Big Ten Challenge.

Duke beat Army 100-38 and 100-42 the last two times the Black Knights played in Cameron Indoor Stadium.