The Denver Broncos will be favored to defend their AFC West regular-season championship from the 2011 NFL season after they replaced Tim Tebow with Peyton Manning. The San Diego Chargers are looking to rebound following back-to-back seasons without a playoff appearance. The Oakland Raiders are hoping that a new general manager and head coach will push them into the playoffs. The Kansas City Chiefs should be more competitive since they'll be healthier with the potential returns of Tony Moeaki, Eric Berry and Jamaal Charles.

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