NFC North: How Lions, Vikings or Packers could win the division -- and Bears could play spoiler

It's the first time since the 1970 merger that three teams in the same division have a win percentage of at least750.

At 11-1 , the Lions are the NFL 's only undefeated team on the road ( 6 -0) The Vikings ' defense has been the best for most of this season 's 12 games.

The Vikings have the most difficult remaining schedule, and all six games are against NFC teams.

The Vikings are the NFL 's oldest team based on snap-weighed analysis performed by ESPN 's Bill Barnwell .

Quarterback Sam Darnold is playing the best football of his professional career.

The Packers have won their past two games in blowout fashion by a combined score of 68-27 .

A loss would put the Packers three games behind with four to play, and they would lose tiebreaker.

The Bears should look as strong or stronger under interim coach Thomas Brown .

Rookie quarterback Williams has thrown five touchdown passes and hasn't turned the ball over since Brown 's first game calling plays in Week 11 .

Keenan Allen has played a significant role in the Bears' ability to claw back in recent division games.