Brent Yarina, BTN.com Senior Editor, January 18, 2014

Just four nights ago, Indiana fans were storming the court after sending No. 3 Wisconsin to its first loss of the season. Saturday, they left Assembly Hall stunned after Indiana's ugly 54-47 loss to Northwestern, which entered the game with only two wins all-time in Bloomington. See some of the best Twitter reaction to the upset in this post.

The numbers were ugly. Indiana shot 25 percent (15-of-60) and had one player (Noah Vonleh, 17) in double figures. Make no mistake, Northwestern's defense had plenty to do with Indiana's struggles.

In the end, this game came down to Tre Demps, who scored 13 of his 15 points in the second half.

See the best Twitter reaction: