An unpleasant incident developed in the fans during Saturday's San Francisco 49ers preseason game at Levi's Stadium.
During the game versus the Denver Broncos, several Niners fans got into a massive brawl and had to be broken up.
The video begins with at least three people throwing fists, and it's unclear what initiated the fight.
Two supporters, one in a Steve Young jersey and the other in a Jerry Rice jersey, appear to have been involved.
At least three youngsters witnessed the conflict up close and personal.
After one supporter was removed, the remaining two threw multiple haymakers; the man in the Rice jersey and another in a white shirt.
In the end, security intervened, but not before the man in the white shirt emerged from the melee bloodied and with a ripped collar.
From the looks of it, the fight started when the supporter wearing the white shirt and the fan wearing a Young jersey had a disagreement.