Patriots, Broncos are home underdogs — despite 10-game winning streaks

The 11-2 Patriots and 11-2 Broncos are tied for the best record in the NFL. They've each won 10 games in a row.

And they're both underdogs at home in Week 15.

The Patriots, who can clinch the AFC East by completing the sweep of the Bills, are 1.5-point underdogs against Buffalo. Coach Mike Vrabel undoubtedly will find a way to use that to poke and prod his players - even if the Bills had nothing to do with the setting of the line.

Ditto for the Broncos. They're 2.5-point underdogs at home against the Packers. That one is a bit more defensible, since the Broncos have played plenty of games against overmatched foes, with very few truly convincing wins. (Still, coach Sean Payton likely will have a thing or two to say to his players about the betting line.)

The spreads are driven in part by wagering patterns. Bettors still don't believe in the Patriots and Broncos the way they could, or perhaps should.

In contrast, the gamblers continue to cling to the idea that the 6-7 Chiefs, who are 5.5-point favorites against the 9-4 Chargers, will emerge from their current funk.

However it goes, it adds a little spice to the 15th weekend of regular-season football, with all three games having postseason significance to both teams.