The Pittsburgh Steelers took a 20-9 lead with a field goal, and a fight broke out between them and the Kansas City Chiefs.
Things became heated after the Pittsburgh Steelers made a field goal to take a 20-9 lead against the Kansas City Chiefs.
The teams became involved in a fight, and a Steelers player fell to the ground during the fight before having his helmet ripped off.
The Steelers and Chiefs are not rivals, but the playoffs being on the line for both teams is sure to be a factor in their intensity.
Here is a video from Vine of the latest in-game fight between NFL teams.