INDIANAPOLIS -- Jahlil Okafor spent last year's State Farm Champions Classic trying to pick a school.

He spent Tuesday night methodically picking apart one of America's perennial powers.

Quinn Cook scored 19 points, but Okafor manhandled the post, finishing with 17 points and five rebounds to lead No. 4 Duke past No. 19 Michigan State 81-71.

"I thought I played decent, but as a team we played great," Okafor said after the Blue Devils' third straight double-digit victory. "It was a really big win for us. They gave us a lot of challenges."

Okafor A Rock In The Post Jahlil Okafor has been nothing if not consistent through his first three collegiate games. Points FG vs. Presbyterian 19 9-10 vs. Fairfield 17 8-10 vs. Michigan St. 17 8-10 -- ESPN Stats & Information

Okafor overcame most of them in his first big NBA audition.

Against the defending Big Ten tournament champs, the 6-foot-11 freshman -- who is already considered a lottery pick -- showed everyone he can post up, drive to the basket, spin away from defenders, back them down and draw fouls. He blocked two shots, had two steals and finished 8-of-10 from the field. Okafor even wound up surviving foul trouble thanks to his teammates' contributions.

Cook, Justise Winslow and Tyus Jones put the game away with a 13-3 run that extended Duke's 51-48 lead to 64-51 with 7:58 left in the game. Michigan State never led, and Duke (3-0) has trailed for just 18 seconds this season.

The biggest reason is Okafor's presence.

"I've been watching him since the eighth grade," Spartans coach Tom Izzo said. "He had three or four baskets in a row early and only had three or four or five after that. I wasn't disappointed in that; I was just impressed with him."

Michigan State (1-1) was led by Branden Dawson with 18 points and nine rebounds. Travis Trice added 15 points, not nearly enough in the first game of one of the early season's premier events.

Duke looked at home on the Indiana Pacers' home floor, making its first seven shots and pulling out to a 14-9 lead. The Blue Devils extended the margin to 27-17 with 8:51 left in the first half.

The Spartans spent the rest of the night playing catchup, finally getting as close as 51-48 with 13:54 left before Duke pulled away.

"I thought we handled it well," coach Mike Krzyzewski of his team's first big game this season. "They get loose balls and rebounds really well, and that's the thing, for us to get better, we're going to have to learn to do."

TIP-INS

Duke: The Blue Devils have won four straight in this series, including twice in the Champions Classic. The first win over Michigan State in the event gave Krzyzewski the career record for wins. He now has 985.

Michigan State: Izzo often calls Indianapolis one of his favorite cities because he has had so much success in town. He won the 2000 national championship at the RCA Dome. He has won multiple Big Ten tournament titles here, and in 2009 he punched his ticket to the Final Four in Detroit with a regional final win over Louisville at Lucas Oil Stadium. But he also has sustained some tough moments here, such as the 2010 national semifinal loss to nearby Butler and his first loss this season.

UP NEXT

Duke faces Temple in the Coaches vs. Cancer Classic in New York on Friday.

Michigan State hosts Loyola (Ill.) in its home opener Friday.

POINT OF EMPHASIS

Normally, Michigan State is one of the best defensive teams in the country. Not against Duke. The Blue Devils shot 54 percent from the field and 7-of-14 on 3-pointers, and outscored Michigan State 24-4 on points off turnovers.

SCORING SPREE

Duke topped 100 points in each of its first two games this season, the first time it had done that in consecutive games since 1997-98. If the Blue Devils' big three keep playing this way, they could be one of the nation's highest-scoring teams. Cook was 7-of-12 from the field, Jones 4-of-5 and Okafor 8-of-10 -- a combined 61.3 percent. But the rest of the team was 8-of-23, numbers that must improve if Duke plans to return to Indy for the Final Four in April.