During Sunday night's game between the U.S. and Portugal, Americans fans spotted a familiar face cheering the team along from the stands.
It was a guy dressed up as Theodore Roosevelt, since been nicknamed "Teddy Goalsevelt."
TEDDY GOALSEVELT RT @SBNation: TEDDY ROOSEVELT THINKS THAT WAS A GOOD GOAL
His incredibly inspirational mustachioed scream gave hope to Americans all over the world watching the game.
You know who was really excited by that goal? Teddy Roosevelt.
People have been tweeting nonstop about him since.
You know it's a good day when Teddy Roosevelt comes back from the dead to support the U.S. team!!!!
And the fans who have internet down in Brazil have been sharing photos of the 26th president walking around. But the question remains, who is this man?
Today is the day. We salute you, Teddy Goalsevelt.
Thankfully, the folks over at Yahoo! Sports tracked him down. His name is Mike D'Amico and he actually wasn't aware he had become an internet sensation.
D'Amico told Yahoo he decided to wear the costume because he thought people would be more likely to sing-a-long to USA chants if Teddy Roosevelt were leading them.
But he definitely doesn't mind the newfound fame.
Go get 'em, Mr. President.
Teddy Goalsevelt #WorldCup
In real life, Teddy Goalsevelt (Mike D’Amico) is an associate creative director at Cavalry, the lead ad agency for Coors Light. Cavalry are now raising money to keep D'Amico down in Brazil for the whole World Cup. The agency promised to match every dollar donated up to $2,500.