By JIM O'CONNELL
AP Basketball Writer
Breaking down this week's Associated Press college basketball poll:
At the start of the week, there were 14 Division I teams that had yet to lose a game, and all but three of them are ranked in the Top 25.
Pittsburgh (10-0), Toledo (9-0) and Saint Mary's, Calif. (8-0) are unranked.
Six of the unbeatens - Arizona, Syracuse, Ohio State, Wisconsin, Villanova and Connecticut - are ranked in the top 10.
The others are No. 11 Wichita State, No. 13 Oregon, No. 17 Iowa State, No. 22 Massachusetts and No. 23 Missouri.
On the other side of the win-loss ledger, three Division I teams have yet to a win a game: Cornell (0-10), Tennessee State (0-10) and Grambling State (0-4).
Saturday's Kentucky-North Carolina game accounted for the week's biggest poll moves.
The Tar Heels' 82-77 victory moved them from No. 18 to 14th.
Kentucky, the preseason No. 1, dropped from No. 11 to 19th with its third loss of the season - all to teams ranked in the top 14 in this week's poll.
Kansas, which lost to Florida last week before beating New Mexico, dropped five spots to 18th, the Jayhawks' lowest ranking since they were 21st in February 2009.
North Carolina's 82-77 victory over Kentucky on Saturday was the Tar Heels' third win this season over a ranked team.
North Carolina also beat then-No. 3 Louisville and then-No. 1 Michigan State.
The Tar Heels are the only team this season with wins over three ranked opponents.
Iowa State (No. 7 Michigan and No. 23 Iowa); San Diego State (No. 20 Creighton and No. 25 Marquette); and Villanova (No. 2 Kansas and No. 23 Iowa) are the only teams with two wins over ranked opponents.
There are two games between ranked teams this week.
On Tuesday, No. 15 Memphis and No. 16 Florida meet in the Jimmy V Classic at Madison Square Garden. On Saturday, No. 7 Oklahoma State and No. 20 Colorado meet at the MGM Grand Garden Arena in Las Vegas.
There will be as close to a double-ranked game as possible Thursday at Madison Square Garden when No. 8 Duke faces UCLA, which was 26th in this week's voting.