Saturday's San Francisco 49ers preseason game featured an ugly scene in the stands at Levi's Stadium.
Numerous Niners fans had to be separated after a huge brawl during the game against the Denver Broncos.
It's unclear what started the ruckus, but in the beginning of a video, at least three people can be seen throwing punches.
From the looks of it, two fans — one wearing a Steve Young jersey, the other wearing a Jerry Rice jersey — were involved.
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At least three children had a front row seat for the fight.
One fan was whisked away, but that left two others — the man in the Rice jersey and another in a white shirt — throwing numerous haymakers.
Eventually, it was broken up by security, but not before the man in the white shirt came up bloodied with his shirt ripped near the collar.
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A separate view of the beginning of the brawl seems to show a disagreement between the fan in the white and the fan in the Young jersey.
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The 49ers won the game over the Broncos, 21-20.