There are unwritten rules in football similar to those in other sports.
In baseball, if your star player gets hit by a pitch, which was believed to be intentional, the opponent’s star player should expect to get a pitch thrown at him his next time up.
In hockey, if you take a run at a player, you should expect several other players to return the favor at their soonest opportunity.
In football, if you take a cheap shot at a quarterback, there will be players to come and stick up for their teammate.
This is exactly what happened in the Pittsburgh Steelers’ 52-21 win over the Carolina Panthers in Week 10 on Thursday Night Football.