The complexion of both NFL playoff races changed after New England and San Francisco suffered Week 13 defeats.
By falling to Houston, the Patriots moved down to AFC's No. 2 seed since Baltimore owns a head-to-head tiebreaker.
In the NFC, New Orleans and San Francisco are level at 10-2, and Seattle could join them with a Monday night home triumph over Minnesota.
If the Seahawks win, a new wrinkle will be thrown into the NFC playoff picture, as they would move ahead of the 49ers through their head-to-head tiebreaker.
Entering Week 14, the Saints are the only franchise to clinch a postseason berth.