Maybe Sharks forward Kurtis Gabriel and Vegas Golden Knights forward Ryan Reaves planned this during their pregame chat.
As the third period was starting between the Sharks and Golden Knights on Friday at SAP Center, the two fourth-line players dropped gloves and engaged in an epic fight.
The fight between Gabriel and Reaves was just another chapter in a tense game, and rivalry.
Both players were sent to the penalty box for five minutes for fighting.
During pregame warmups Friday, Gabriel and Reaves were seen having an intense conversation at the team benches.
In the second period, Gabriel laid a hit on Vegas winger Alex Tuch, and NBC Sports California analyst Bret Hedican believes that play led to the fight to start the third period.
The Sharks and Golden Knights clearly don't like each other. Every game between the two West Division rivals adds a new layer to the disdain. If you enjoy the bitterness, the good news is the two teams play again Saturday night, and it's sure to be just as dramatic as always.