And then there was one.

The Carolina Panthers will head into Week 13 as the NFL's only undefeated team after New England fell Sunday night in Denver.

As the Patriots were blowing a 21-7 fourth-quarter lead, Pro Bowl tight end Rob Gronkowski was carted off the field with a knee injury. Broncos quarterback Brock Osweiler then forced overtime with an 83-yard scoring drive before running back C.J. Anderson took a sweep 48 yards to win the game in overtime.

So the Panthers stand alone at 11-0. For what it's worth, their final four opponents went 0-4 Sunday, losing by a combined score of 89-42.