There was a shakeup atop the first Associated Press Top 25 rankings of 2018 after last week's No. 1 Villanova and No. 3 Arizona State each suffered their first losses of the season on Saturday.
The Wildcats' 101-93 loss against Butler opened the door for Michigan State to take over the top spot in the latest rankings released Monday. Duke, Villanova, Arizona State and Xavier round out the top five.
Here's a look at the full Top 25:
1. Michigan State (14-1)
2. Duke (13-1)
3. Villanova (13-1)
4. Arizona State (12-1)
5. Xavier (14-1)
6. West Virginia (12-1)
7. Oklahoma (11-1)
8. Virginia (12-1)
9. Wichita State (11-2)
10. Kansas (11-2)
11. Texas A&M (11-2)
12. North Carolina (12-2)
13. Purdue (13-2)
14. Arizona (11-3)
15. Miami (12-1)
16. TCU (12-1)
17. Kentucky (11-2)
18. Texas Tech (12-1)
T-19. Gonzaga (12-3)
T-19. Cincinnati (12-2)
21. Seton Hall (13-2)
22. Arkansas (11-2)
23. Tennessee (9-3)
24. Florida State (11-2)
25. Clemson (12-1)
Saturday was a monumental day on the college basketball calendar. Villanova, Arizona State and TCU all fell from the unbeaten ranks, leaving every Division I team with at least one loss before the start of the new year.
Per ESPN Stats & Info, this is the first time in the AP Poll era, dating back to the 1948-49 season, there have been no remaining unbeaten teams on Jan. 1.
On the same day those three teams lost, No. 5 Texas A&M was handed its second defeat of the season in a 79-57 blowout against Alabama. Duke needed a 9-0 run over the final 3:30 against Florida State to earn its first ACC win of the year.
The two big winners from Saturday's upset extravaganza were Oklahoma and Arizona. The Sooners knocked off TCU behind Trae Young's 39 points and 14 assists, capping off an incredible four-game stretch for the freshman sensation:
After a three-game losing streak from Nov. 22-24 that dropped it from No. 2 to unranked in the span of one week, Arizona has responded by winning its last eight games with victories over Texas A&M and Arizona State.
The Wildcats have now climbed all the way back up to 14th in the rankings. Head coach Sean Miller said beating the Sun Devils was a highlight of his team's season so far.
"I credit Arizona State, we were shook at the end and it's because of its pressure and their will," he told reporters. "They're a difficult team to beat - this is our best win of the season because that's such an exceptional team."
Arizona State, now 12-1, has been one of the season's pleasant surprises. One loss doesn't diminish what head coach Bobby Hurley has accomplished with his team already and where they can go leading into the NCAA tournament.
Among the key games on this week's schedule, TCU and Baylor will square off in a Big 12 showdown on Tuesday, with both teams looking to get back on track after difficult losses.
Florida State, which was able to stay at No. 24 for the second straight week, is following up its loss against Duke with a home game against No. 12 North Carolina on Wednesday before traveling to Watsco Center Sunday for a matchup with No. 15 Miami.