The word rivalry is thrown around a lot in sports. But in the case of the Bills and Chiefs, there’s really no other way to describe it. On Sunday, the two teams will meet for the eighth time in five seasons — three of which were in the playoffs.

The Bills host the Chiefs in what is being billed as the game of the year in the NFL. Here is Sal Maiorana's in-depth preview.

While the Chiefs seem to have the talent, and a little bit of luck, on their side to be the first team in a 17-game season to go undefeated, the last three times these squads met during the regular season, the Bills came out victorious. If the regular ...