As the NFL season heads into its final few weeks, the jockeying for playoff position is getting more intense.

There are three teams grouped at the top of the NFC, and with the Lions and Vikings poised to face off in week 18, and the Eagles coming off a tough loss in Washington on Sunday, it looks like the road through the NFC could run through the north.

Meanwhile in the AFC, the Chiefs and Bills held serve. Buffalo survived an early scare from the Patriots, and Kansas City scared us all by taking no precautions with Patrick Mahomes against the Texans (of course it worked out).

So today ESPN sports analytics writer Seth Walder and Ben Solak dig into the numbers to explain all of the postseason machinations in play.

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