College football rankings, grades: Michigan, Oklahoma earn ‘A’ scores, USC gets a ‘D’ in Week 5 report card | CBS Sports Headlines College football rankings, grades: Michigan, Oklahoma earn ‘A’ scores, USC gets a ‘D’ in Week 5 report card It’s time to grade the College Football Playoff contenders that … Continue reading College football rankings, grades: Michigan, Oklahoma earn ‘A’ scores, USC gets a ‘D’ in Week 5 report card