Bloody brawl between Broncos and 49ers fans

Sometimes, fans at professional sporting events just simply don't know how to behave anymore. And we saw a top notch example of that during last night's preseason game between the Denver Broncos and San Francisco 49ers at Levis Stadium.

As you can see from the video, at least two fans - one wearing a Steve Young jersey, the other wearing a Jerry Rice jersey were involved in the chaos. 

When it was all said and done, it was the host 49ers who emerged victorious with a 21-20 final score win.

Recommended articles:

• Russell Wilson, Broncos blasted after 1st preseason game
• Denver Broncos fear devastating injury
• Brett Maher leaves Cowboys, finds new home
• Ex-Broncos player and WWE star Darren Drozdov has died
• Russell Wilson blocked major trade to NFC East!

Recommended articles:

• Former Cowboys 1st round pick Taco Charlton signs with bitter rival
• 49ers legend Steve Young blasts Cowboys play calling
• 49ers' George Kittle threatens Steelers' T.J. Watt!
• Jimmy Garoppolo gets terrible news from Raiders
• 49ers Hall of Fame LB Dave Wilcox has died