NCAA Men's Basketball Power Rankings: Purdue cracks top 5

This past Saturday featured the craziest, most upside-down day of the men's college basketball season. Eleven AP-ranked teams lost, according to ESPN Research, with 10 of them losing to lower-ranked or unranked opponents.

Eight top-15 teams lost, with five losing at home. Three top-10 teams lost -- at home.

And it didn't stop after that, with five top-15 teams also losing between Tuesday and Wednesday.

There were massive changes to the Power Rankings as a result, with Purdue the biggest beneficiary, rising six spots. The Boilermakers have great résumé-based metrics, strong efficiency-based metrics and rank third in the country in Quadrant 1 and 2 wins, behind only Auburn and Alabama. Matt Painter's team has a marquee nonconference win over Alabama, a neutral-court victory over Ole Miss and noteworthy home victories over Maryland and Michigan.

It's those quality wins that give Purdue the edge over Florida for the final spot in our top five. The Gators have the 30-point drubbing of Tennessee from early January, but that's their only win over a team ranked in the top 25 of the NET. Although, Todd Golden's team has the biggest opportunity possible this weekend, on the road to Auburn.

Given the recent trend of how ranked teams are performing, these rankings might get flipped on their head again by this time next week. But let's dive in.