No. 1 hasn't been a lot of fun lately.
Over the past five weeks, Indiana, Duke, Michigan and Louisville have swapped the top spot in the poll, the second-longest streak since the first Associated Press poll in 1949.
Indiana was No. 1 the first five weeks of the season and moved back to No. 1 this week.
The Hoosiers became the latest top-ranked team to take a tumble Thursday night, losing to unranked Illinois after giving up an uncontested layup at the buzzer.