49ers, Raiders fans get into nasty brawl outside of Levi's Stadium as heated rivalry explodes in parking lot

Think of yourself on a "Family Feud" panel. When Richard Dawson, Louie Anderson, Steve Harvey or your game show host of choice ask you, "When is the best time to fight a stranger?" the No. 1 answer should always be, "At a sporting event."

It must be. After every NFL weekend, videos begin to trickle out on social media showing two strangers or a group of strangers wailing on each other. The bell rings after someone says something another person doesn’t like or two groups are simply wearing the wrong colored jerseys for your team.

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It’s unclear what prompted Sunday’s parking lot fight outside Levi’s Stadium in Santa Clara, California. It appeared to take place after the San Francisco 49ers trounced the Las Vegas Raiders 38-17.

One fight that went viral showed fans throwing punches and getting knocked out. One person folded like a lawn chair on the ground as his friends continued to brawl with each other.

At least two people were down for the count before another group broke up the melee.

The fight in the parking lot didn’t appear to be a one-off either.

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Nearly a dozen people were arrested and 45 were ejected from the stadium for fighting, Santa Clara police told SF Gate.

"Incidents of violence at large-scale events in Santa Clara will not be tolerated," Santa Clara Police Department spokesperson Lt. Eric Lagergren told the outlet. "The Department strictly enforces the law and holds individuals accountable for criminal conduct. We will seek to arrest the individuals responsible for the fan-on-fan violence at the event."

Seven of the 11 people who were arrested were cited for disorderly conduct. Four were arrested for allegedly fighting in a public place and at least one received a drug possession charge.

The brawling was so apparent that 49ers defensive lineman Keion White said he believed he saw fans fighting in the stands as the game was going on.

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The only real winning was done on the field. Everyone else will be 0-1 for the rest of their lives.

Ryan Gaydos is a senior editor for Fox News Digital.