Once again the No. 1 team in the country lost. This week, it was Michigan falling to Indiana, and so the Hoosiers are the new No. 1 with the Florida Gators close behind at No. 2.
Meanwhile, moving into the Top 25 were Oklahoma State, Georgetown, Memphis and Pittsburgh.
Read on to see the complete Top 25.
Voters: Jesse Kramer, Matt Overing, Thad Novak, Ryan Satsky, Scott Henry, Scott Polacek
Kentucky, 14 points
North Carolina, 13 points
Notre Dame, 12 points
San Diego State, 10 points
UCLA, 10 points
Colorado State, 10 points
Saint Louis, 10 points
Baylor, 9 points
Wichita State, 9 points
Belmont, 8 points
Ole Miss, 7 points
VCU, 5 points
Record: 16-6, 5-4 ACC
Last Week's Rank: 16
Notable Wins: UConn (Neutral), Duke (Home)
North Carolina State continued its ACC struggles with losses to Virginia and Miami (FL) last week.
Although they are 5-4, the Wolfpack's four conference losses have come by a combined seven points.
Record: 16-5, 5-3 SEC
Last Week's Rank: T-21
Notable Wins: VCU (Neutral), Illinois (Neutral)
Missouri was upset by LSU on Thursday, but the Tigers responded with a weekend win over Auburn.
Mizzou now sits in fifth place in the SEC, and it will get a shot at second-place Ole Miss on Saturday.
Record: 18-5, 6-4 Big East
Last Week's Rank: Not Ranked
Notable Wins: Georgetown (Road), UConn (Home), Syracuse (Home)
Pittsburgh moved into the Top 25 after upsetting Syracuse on Saturday afternoon. The Panthers also nearly won at Louisville on Monday.
This week, the Panthers will face Seton Hall and Cincinnati.
Record: 18-3, 7-0 C-USA
Last Week's Rank: Not Ranked
Notable Wins: None
Memphis has won 12 consecutive games, but the Tigers are yet to beat a high-quality opponent.
Their best win so far is against Tennessee.
Record: 16-4, 6-3 Big East
Last Week's Rank: Not Ranked
Notable Wins: UCLA (Neutral), Notre Dame (Road), Louisville (Home)
Georgetown has won four games in a row and six of its last seven.
After facing Rutgers on Saturday, the Hoyas will host Marquette, which is tied for first place, next Monday.
Record: 15-5, 5-3 Big 12
Last Week's Rank: Not Ranked
Notable Wins: NC State (Neutral), Kansas (Road)
Oklahoma State moved back into the Top 25 by beating No. 2 Kansas in "The Phog."
Markel Brown posted 28 points, and Marcus Smart had 25 points, nine rebounds and five steals.
Record: 18-4, 7-2 Pac-12
Last Week's Rank: 13
Notable Wins: UNLV (Road), Arizona (Home), UCLA (Road)
After starting Pac-12 play at 7-0, Oregon lost its last two games to Stanford and California.
The Stanford loss was particularly disconcerting, as the Cardinal dominated the Ducks and won 76-52.
Record: 17-5, 5-4 Big Ten
Last Week's Rank: 19
Notable Wins: Memphis (Neutral), Michigan State (Home), Illinois (Road)
Minnesota ended its four-game losing streak with wins over Nebraska and Iowa last week.
On Sunday against the Hawkeyes, the Golden Gophers fell behind in the second half, but Austin Hollins drilled a game-winning three-pointer with 14 seconds left.
Record: 18-4, 6-3 Big East
Last Week's Rank: 20
Notable Wins: Oregon (Neutral), Pitt (Road), Marquette (Home)
Cincinnati's only loss in its last six games was by two points at Syracuse, which was then ranked No. 3 in the nation.
Of the five wins during that stretch, four have come by eight points or fewer.
Record: 17-4, 6-2 Big 12
Last Week's Rank: 25
Notable Wins: Florida (Neutral), Oklahoma State (Home)
Kansas State ended its two-game slide with wins over Texas and Oklahoma last week. The Wildcats now stand alone in second place in the Big 12 at 6-2.
On Saturday, they will host Iowa State, which won the first meeting on January 26, 73-67.
Record: 19-3, 6-1 Mountain West Conference
Last Week's Rank: 24
Notable Wins: UConn (Neutral), Cincinnati (Road), UNLV (Home), Colorado State (Home)
New Mexico kept control of first place in the competitive Mountain West by beating Wyoming and Nevada last week.
On Wednesday, the Lobos host Air Force, which moved into second place over the weekend after defeating San Diego State.
Record: 20-3, 9-2 Missouri Valley Conference
Last Week's Rank: 17
Notable Wins: Wisconsin (Neutral), Arizona State (Neutral)
Creighton moved back into first place in the Missouri Valley by defeating Missouri State and Bradley.
The Bluejays have a tough, four-game stretch coming up, which includes road games against Indiana State, Northern Iowa and Evansville.
Record: 18-4, 5-2 A-10
Last Week's Rank: 10
Notable Wins: Marquette (Neutral), Indiana (Neutral), Gonzaga (Home)
Once again, Butler lost a road game early in the week but rebounded with a win at home over the weekend.
At 5-2, the Bulldogs are a half-game out of first place in the Atlantic 10 entering Wednesday's game against Saint Bonaventure.
Record: 17-4, 5-3 Big East
Last Week's Rank: 12
Notable Wins: Missouri (Neutral), Memphis (Road), Kentucky (Home), Pitt (Home)
Louisville put its three-game winning streak in the past with wins over Pittsburgh and Marquette last week.
The Cardinals are now a half-game out of first place, and they play at Rutgers and Notre Dame this week.
Record: 17-3, 8-0 ACC
Last Week's Rank: 14
Notable Wins: Michigan State (Home), Duke (Home), NC State (Road)
Miami survived at North Carolina State on Reggie Johnson's game-winning tip-in with 0.8 seconds left. The Hurricanes trailed by as many as nine in the second half, but they rallied to keep their perfect record in ACC play alive.
This week, the Hurricanes will play a pair of home games against Boston College and North Carolina.
Record: 18-3, 6-2 Big East
Last Week's Rank: 6
Notable Wins: San Diego State (Neutral), Louisville (Road), Cincinnati (Home)
After looking like a clear favorite in the Big East a little more than a week ago, Syracuse has lost its last two games to Villanova and Pittsburgh.
The Orange return home where they have won 35 games in a row to face Notre Dame and St. John's this week.
Record: 17-4, 7-2 Big Ten
Last Week's Rank: 11
Notable Wins: Michigan (Home), Wisconsin (Home)
Ohio State did not do much in non-conference play, but the Buckeyes have won six of their last seven Big Ten games to earn a share of second place at the midway point of the conference season.
This week, they will face a pair of huge tests at Michigan on Tuesday and at home against Indiana on Sunday.
Record: 18-4, 7-2 Big Ten
Last Week's Rank: 9
Notable Wins: Kansas (Neutral), Ohio State (Home), Wisconsin (Road)
Michigan State survived Illinois' upset bid on Thursday to keep a share of second place in the Big Ten. The Spartans finished January with a 7-1 record, and the only loss was by five points at Indiana.
On Wednesday, Michigan State will host Minnesota.
Record: 21-2, 8-0 West Coast Conference
Last Week's Rank: 8
Notable Wins: Oklahoma (Neutral), Kansas State (Neutral), Baylor (Home), Oklahoma State (Road)
Gonzaga struggled with San Diego on Saturday night, but the Zags were able to make a defensive stand on the final possession of the game to win 65-63.
This week, the Bulldogs host Pepperdine and Loyola Marymount, both of which they beat easily on the road earlier in the season.
Record: 19-2, 7-2 Pac12
Last Week's Rank: 7
Notable Wins: Florida (Home), Miami-FL (Neutral), San Diego State (Neutral), Colorado (Home)
Arizona has won five of its last six games, tying Oregon for first place in the Pac-12.
The Wildcats will return home this week to face Stanford and California.
Record: 19-2, 6-2 ACC
Last Week's Rank: 5
Notable Wins: Kentucky (Neutral), Minnesota (Neutral), VCU (Neutral), Louisville (Neutral), Ohio State (Home)
Duke took sole possession of second place in the ACC by beating Wake Forest and Florida State last week.
On Thursday, the Blue Devils will host North Carolina State, which beat them on January 12, 84-76.
Record: 19-2, 7-1 Big 12
Last Week's Rank: 2
Notable Wins: Saint Louis (Neutral), Colorado (Home), Belmont (Home), Ohio State (Road)
Kansas lost its chance at moving up to the No. 1 rank by losing at home to Oklahoma State on Saturday. The loss ended the Jayhawks' 33-game home winning streak.
The Jayhawks will be on the road this week, facing Texas Christian and Oklahoma.
Record: 20-2, 7-2 Big Ten
Last Week's Rank: 1
Notable Wins: Pitt (Neutral), Kansas State (Neutral), NC State (Home), Minnesota (Road)
Michigan lost its spot as the No. 1 team after falling to Indiana on Saturday night.
The Wolverines are now tied for second place in the Big Ten with Michigan State and Ohio State, and they host the Buckeyes on Tuesday.
Record: 18-2, 8-0 SEC
Last Week's Rank: 3
Notable Wins: Wisconsin (Home), Marquette (Home), Missouri (Home), Ole Miss (Home)
Florida blew past Ole Miss on Saturday to maintain sole possession of first place in the SEC. Through 20 games, the Gators are No. 1 in KenPom rankings with the No. 2 offense and the No. 1 defense.
This week, Florida will face Arkansas and Mississippi State.
Record: 20-2, 8-1 Big Ten
Last Week's Rank: 4
Notable Wins: Georgetown (Neutral), Minnesota (Home), Michigan State (Home), Michigan (Home)
Indiana jumped back to No. 1 this week after upsetting Michigan, which had been ranked No. 1 last week.
The Hoosiers have now won five games in a row, and they face Illinois and Ohio State on the road this week.