AP College Basketball Poll 2021: Complete Week 5 Rankings Released

Purdue is the No. 1 team in the Associated Press poll for the first time in school history after the latest shake-up at the top.

The Boilermakers improved to 8-0 with a pair of convincing wins this week, while Duke and Gonzaga each suffered upset losses to slide down in the poll.

Here is the full Top 25 heading into Week 5 of the college basketball season.

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AP Poll

1. Purdue

2. Baylor

3. Duke

4. UCLA

5. Gonzaga

6. Villanova

7. Texas

8. Kansas

9. Alabama

10. Kentucky

11. Arizona

12. Arkansas

13. Tennessee

14. Houston

15. Connecticut

16. USC

17. Iowa State

18. Auburn

19. Michigan State

20. Florida

21. Ohio State

22. Wisconsin

23. Seton Hall

24. BYU

25. LSU

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Purdue has impressed through the first month of the season, beating North Carolina and Villanova. The past week was no different as the team dominated Florida State 93-65 before earning a 77-70 win over previously unbeaten Iowa.

"They deserved to be No. 1," Iowa coach Fran McCaffery told reporters after the game. "They can hurt in so many ways. They have depth, experience and size. It's going to be a hard team to beat."

Jaden Ivey led the team in scoring each game. He is averaging 15.9 points per game and is one of the top breakout players in college basketball.

The move up the ranking was also helped by Ohio State's upset over Duke. The Buckeyes earned the 71-69 win in the Big Ten/ACC Challenge thanks to some clutch shooting by E.J. Liddell:

Duke seemed unstoppable after a win over Gonzaga last week but dropped from No. 1 to No. 3.

Gonzaga also fell again to No. 5 after suffering a 91-82 loss to Alabama. The Crimson Tide hit 13 three-pointers in the win, led by Jaden Shackelford's 28 points on 10-of-16 shooting.

The Crimson Tide lost to Iona earlier this year, but at 7-1, the team moved up to ninth.

Baylor is also on the rise at No. 2 despite only facing Arkansas-Pine Bluff this week, although the squad will be tested in its next game against No. 6 Villanova.

BYU and Florida each dropped after suffering their first losses of the season.