1. Denver Broncos (Last week: 2)
We’re going to find out which team should be No. 1 in the power rankings when Denver takes on San Diego in Week 7. But for now, we let the defending AFC champs hold the honor — until their AFC West rivals knock them off.
What to know: Julius Thomas has joined Calvin Johnson as the only players with nine touchdowns through the first five games of an NFL season, according to Elias Sports.
