It's as close as it can be at the top of The Associated Press college basketball poll.
Arizona, one of only three ranked teams not to have played in the opening 11 days of the season, was still No. 1 in the Top 25 on Monday, but the Wildcats' lead over Duke was down to one point.
Duke (2-0), which beat Princeton and Villanova to advance to the semifinals of the Preseason NIT, was 16 points behind in the first poll of the regular season.
The Wildcats went into Monday's opening-round game of the Maui Invitational against Chaminade without 7-foot-1 senior center Loren Woods. The preseason All-America was suspended for six games for an undisclosed violation of NCAA rules and didn't make the trip to Hawaii.
Arizona received 33 first-place votes and 1,654 points from the national media panel, while Duke was No. 1 on 30 ballots. Last week Arizona had 35 first-place votes, 14 more than Duke.
Kansas (3-0), which beat North Dakota 92-61 in its only game last week, moved up one place to third, while Michigan State (1-0), which opened its season Sunday with a 97-61 victory over Oakland, Mich., dropped one spot to fourth. The Spartans, the defending national champions, received four first-place votes.
For the second straight week Stanford, Maryland, North Carolina, Illinois, Tennessee and Seton Hall were ranked fifth through 10th.
Maryland, which also opened it season Monday in the Maui Invitational, was the only other team to get a first-place vote.
Florida again led the Second Ten, followed by Connecticut, Utah, Notre Dame, UCLA, Cincinnati, Wake Forest, Wisconsin, Oklahoma and Southern California.
The last five ranked teams were DePaul, Kentucky, St. John's, Arkansas and Virginia.
While the same 25 teams remained in the rankings, the only significant move was Arkansas' drop from 15th to 24th. The Razorbacks (1-1) opened the season with a 90-68 victory over Tennessee State 90-68, then lost to Southern Mississippi 63-54 in the championship game of the inaugural John Thompson Classic.
Wisconsin was the third ranked team not to have played since the season began on Nov. 9. The 18th-ranked Badgers open the season Tuesday at No. 9 Tennessee.