College football rankings, grades: Oklahoma earns an ‘A+’ with Notre Dame getting an ‘F’ in Week 6 report card | CBS Sports Headlines College football rankings, grades: Oklahoma earns an ‘A+’ with Notre Dame getting an ‘F’ in Week 6 report card It’s time to grade the College Football Playoff … Continue reading College football rankings, grades: Oklahoma earns an ‘A+’ with Notre Dame getting an ‘F’ in Week 6 report card