NFL Power Rankings Week 2NFL Power Rankings Chris Burke | Sep 18, 2013NFL Power Rankings Week 2 / Could Peyton Manning and the Broncos go undefeated this season? It's fair to wonder :: Simon Bruty/SI NFL Power Rankings Published Sep 18, 2013CHRIS BURKEChris Burke covers the NFL for Sports Illustrated and is SI.com’s lead NFL draft expert. He joined SI in 2011 and lives in Ann Arbor, Mich.