The Associated Press has released its Week 6 rankings, and as expected, unbeaten Michigan State remains at the top. Behind MSU, in three of the next four sports, are Big 12 teams: Kansas, Oklahoma and Iowa State. One-loss Kentucky is the other team in the top five.

Oklahoma bumps up from No. 7 to No. 3 after beating then-undefeated Villanova. For its loss, by the way, the Wildcats fall from ninth to 12th.

George Washington, ranked No. 21, is a newcomer to the poll. It's the first time the Colonials have been ranked since the end of the 2005-06 season.

Three-loss UCLA (7-3) enters the rankings No. 22, along with UConn, who enters the poll at 6-3. Texas A&M is back in the top-25 at No. 24.

Vandy, Gonzaga, Oregon and Utah dropped from the poll this week.

>>Oklahoma Climbs in Coaches Poll

Oklahoma moved up five places to No. 3 in this week's coaches' poll as Michigan State consolidated its lead and stayed at No. 1.

The Sooners are coming off of a big week, having defeated Villanova 78-55. The Wildcats fell all the way from No. 6 to No. 13 following the loss. However, they were not the biggest faller of the week. In fact, that honor was bestowed upon North Carolina, who dropped all the way to No. 11 after its final-second loss to Texas.

On the other side of things, the biggest riser was George Washington, who entered the rankings at No. 22 after being ranked No. 31 last week. Mike Lonergan's club is 9-1 right now with wins over Virginia, Seton Hall and Tennessee and only a five-point loss to No. 20 Cincinnati. South Carolina is the other team to enter the rankings this week, as Frank Martin's group is still undefeated at 8-0.

The two teams to fall out of the rankings were Oregon and Utah, each of whom lost on Saturday.