Unranked Nebraska, Iowa State Upset No. 1 Purdue, No. 2 Houston

Purdue's loss marks fourth upset by unranked team in two seasons, Houston suffers first loss of the season

Nebraska and Iowa State, both unranked, defeated No. 1 Purdue and No. 2 Houston respectively in upsets.
Nebraska's victory over Purdue marked their first win over a top-ranked team since 1982.
Purdue's loss to Nebraska is the fourth time in the past two seasons that a No. 1-ranked Purdue team has lost to an unranked opponent.
Houston's loss to Iowa State was their first loss of the season, making them the last team in men's college basketball to lose a game this season.
The losses by Purdue and Houston open the door for No. 3 Kansas to return to No. 1.