San Francisco is the fifth team in league history to lose three straight Super Bowls, a streak that follows it winning in its first five appearances in the big game.
The fan base is not happy.
The number of years without a title now sits at 29 and the fan base wasted little time lashing out.
Footage surfaced at a Las Vegas casino showing 49ers fans fighting.
On the other side, Kansas City won the Super Bowl for the second consecutive year and the third time in five.
Now the Niners must contend with the present failure and the unknown of the future as their window may be closing at a rapid rate.
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Brock Purdy played a solid game, completing 23 of 38 passes for 255 yards. He passed for one touchdown and was not intercepted. Purdy also was not sacked. He rushed three times for 12 yards.