News 2021 NFL power rankings after Week 5: Bills return to top five, undefeated Cardinals remain on top … for now October 12, 2021October 12, 2021Nate Davis, USA TODAYComments Off on 2021 NFL power rankings after Week 5: Bills return to top five, undefeated Cardinals remain on top … for now The Buffalo Bills and LA Chargers enjoyed signature wins Sunday. Did it vault either team into the elite stratosphere?