Illinois' first loss of the season wasn't enough to knock the Illini out of the top spot in the AP poll, but Kansas University's fourth loss in six games dropped the Jayhawks to a season-low ninth.
Illinois (29-1) was on top Monday for the 14th straight week, but for the first time in five weeks the Illini were not a unanimous selection, receiving 48 first-place votes and 1,725 points from the national media panel.
North Carolina (26-3), which needed a game-closing 11-0 run to beat Duke, 75-73, Sunday, stayed No. 2 for the third straight week and had the other 22 votes for No. 1 and 1,701 points.
In the women's poll, Stanford took over the top spot in the AP poll for the first time since December 1996, replacing LSU after the Tigers lost to Tennessee, 67-65.