Even with quarterback concerns and a defense that lost a couple of key starters, Denver will enter the season as the favorites for the fifth consecutive year. The difference this year is a clear sense that the Chiefs and Raiders are gaining ground and might finally be ready to topple the Broncos. There's ample reason to believe the Chargers will bounce back to .500 or above after succumbing to a string of bad luck in last year's 4-12 campaign.