In the past few seasons of college football, we have witnessed an offensive evolution. Whether it is the zone-read, Air Raid or another form of the spread, college football is all about offense.
The days of winning with a dominant defense aren't over, though. Two-time defending national champion Alabama finished No. 1 in the country in total defense in 2012.
Several schools will struggle offensively this season for a variety of reasons. Whether it is a coaching change, replacing top offensive playmakers or an outdated offensive philosophy, points will be at a premium for some schools.
Can any offensively-challenged school compete for the national championship? Here are five schools that will struggle on offense for one reason or another in 2013.