The Buffalo Bills are still in championship purgatory, and one play in particular doomed them, because they ignored one primary schematic trait from Steve Spagnuolo

The Kansas City Chiefs' defense pulled off a strategic masterstroke to eliminate the Buffalo Bills from the playoffs.

The Buffalo Bills had their season come to an end Sunday night with a devastating loss to the Kansas City Chiefs in the AFC championship game. Their final offensive play will be thought about by a lot by players and fans over the offseason, as the failed 4th-and-5 came so close to being converted on a desperate heave by Josh Allen.

Chiefs defensive coordinator Steve Spagnuolo pulled out one of his best calls when his team needed it against the Bills.

Kansas City #Chiefs defensive coordinator Steve Spagnuolo shares rules for maintaining Buffalo #Bills QB Josh Allen: ‘He sees everything’ | @EdEastonJr

Kansas City Chiefs DC Steve Spagnuolo dialed up an unexpected corner blitz in a pivotal moment against the Buffalo Bills.

Stopping the Josh Allen tush push was a major part of the game and it is the play that is still being discussed as a lot of people think that it should've been a first down. It wasn't, and Chiefs defensive coordinator Steve Spagnuolo spent a lot of time getting his team ready for plays just like that.

T he Buffalo Bills had a chance to seal the game and a trip to the Super Bowl against the Kansas City Chiefs in the AFC Championship Game. With under five minutes left and trailin