Complex sentence: Coming off a 1-11 season in 2012 under Embree, Colorado posted a 4-8 record in 2013, and the Buffs were better prepared and more competitive under MacIntyre's leadership.
Split into simpler sentences: Coming off a 1-11 season in 2012 under Embree, Colorado posted a 4-8 record in 2013. The Buffs were better prepared and more competitive under MacIntyre's leadership.