NFL Week 5 grades: Giants get an 'A+' for upset in London; Chiefs earn 'B+' after surviving Raiders | CBS Sports Headlines NFL Week 5 grades: Giants get an 'A+' for upset in London; Chiefs earn 'B+' after surviving Raiders Here are the Week 5 grades for every team that … Continue reading NFL Week 5 grades: Giants get an 'A+' for upset in London; Chiefs earn 'B+' after surviving Raiders