College football rankings, grades: Oklahoma gets an 'F', Alabama earns 'A+' on Week 4 report card | CBS Sports Headlines College football rankings, grades: Oklahoma gets an 'F', Alabama earns 'A+' on Week 4 report card A wild Week 4 in college football saw the sixth-ranked Sooners suffer their first … Continue reading College football rankings, grades: Oklahoma gets an 'F', Alabama earns 'A+' on Week 4 report card