Multiple inter-squad fights broke out on the field during pregame warmups in Week 6, and the NFL has had just about enough of that tomfoolery, thank you very much.

According to CBS Sports' Jonathan Jones, the NFL sent a memo to all 32 teams last week reminding them about the rules concerning pregame scuffles and the consequences that come with ignoring them. Teams are to warm up behind their own 45-yard line, and any players who ignore that and start a fight with the other team could be disqualified from the game and/or face other punishment.

The San Francisco 49ers and Cleveland Browns got into a shoving match before their Week 6 matchup. It's unclear what sparked the skirmish, but Niners wide receivers Deebo Samuel and Brandon Aiyuk were in the middle, as was offensive tackle Trent Williams. No players were ejected, but officials carefully monitored the sideline for the rest of the game in case things got a little chippy again.

Then the next day the Dallas Cowboys and Los Angeles Chargers threw hands before they faced off on Monday night. Unlike the Niners-Browns scuffle, punches were actually thrown during this one, and Austin Ekeler's helmet popped off after he got hit.

Pregame fighting is rare, so two fights in one weekend is reason for the NFL to take notice. It wants to nip this in the bud before it has a chance to become a trend.