The Bills are a gritty team whose defense has improved as the season winds down with the players becoming more familiar with Rex Ryan's schemes.

Buffalo just held the Patriots, with their second-rated offense, to a season-low 20 points.

Kansas City is getting a lot of love, though, in this matchup because it has won and covered four in a row. Kudos to Andy Reid for keeping the Chiefs together after a tough early-season, but his team isn't that good.

The Chiefs hit a lucky patch during their win streak. First they beat the Steelers when Pittsburgh had to use Landry Jones at quarterback. Jones is one of the worst backups in the league. The Chiefs then caught the Lions in London when Detroit was still in disarray and had just made a switch in offensive coordinators.

Kansas City then drew the Broncos when Peyton Manning was playing hurt and at his most ineffective. After that win was a victory last week against a messed-up, injury-racked Chargers squad that was at their lowest ebb.

The Chiefs rank well below average in passing, which is no surprise with Alex Smith at center. Smith can win given weapons, but he's not going to pile on points. Because of their passing limitations, the Chiefs heavily rely on their tailback. That tailback could be third-stringer Spencer Ware. So Smith doesn't have outstanding weapons.