NFL power ranking experts seemingly are growing more skittish about the Bills' prospects ahead of this weekend's wild card game.

The Lions move back into the top spot after their decisive win over the Vikings, plus one lesson learned for every NFL team.

With NFL Wild Card Weekend just a few days away, it's time to take stock of the games we have on tap. We're covering everything from every conceivable angle here at CBSSports.com, and one of the things we wanted to take a look at is which teams have the best chance to pull of an upset in the first round.