The weekend schedule in men's college basketball is full of major matchups across the biggest conferences in the country.

On the one hand, it has been a precipitous fall for college basketball's preseason No. 1. Purdue – which tumbled eight spots, to No. 12, after upsets by UCLA and the Illini – will likely slip further down the AP poll next Monday and, more importantly, is positioned a full two games behind the four conference co-leaders.

Two of the Big Ten's top teams clash with first place on the line when the third-ranked Michigan Wolverines battle the seventh-ranked Michigan

Arizona and Miami (Ohio) are the only two unbeaten teams remaining in college basketball after the Cornhuskers lose for first time

Big Ten women's basketball is in the thick of league play, and intriguing storylines are forming left and right. The top team is clear but not is beyond that. It’ll be a nightly battle for league supremacy all the way through this intriguing Big Ten race.

Nebraska and Illinois look like the Big Ten's finest, while the Trojans are aiming to solidify themselves as an NCAA Tournament team after a huge win

Northwestern delivered a dominant home win over Penn State, marking its second Big Ten victory.