Fans are clearly in midseason form.
The Denver Broncos were in San Francisco this weekend for a preseason game against the 49ers and while it was just preseason, the game was pretty exciting, with the Niners pulling out a 21-20 win on a game-winning field goal from kicker Jake Moody.
But that wasn't the only action at Levi Stadium.
A huge brawl broke out among 49ers fans in the stands, leaving at least one guy bloodied as he got escorted out of the stadium.
It's just preseason.