It looks like some University of Arizona fans caught the Sun Devils by surprise overnight.
ASU students woke up this morning to find the "A" on "A" Mountain in Tempe - the home of Arizona State University - was painted red, one of the Wildcats' colors.
Arizona and Arizona State face off next week in their annual rivalry football game, referred to as the "Territorial Cup." Painting the "A'' in Tempe and the one in Tucson are traditions as well.
Copyright 2013 Associated Press. All rights reserved. CBS 5 (KPHO Broadcasting Corporation) contributed to this report.