The St. Louis Rams are familiar with fans cheering for the opposition, even at their home games.
They're likely to get an even bigger dose of that Sunday when they go up against the New England Patriots at Wembley in the annual NFL game in London.
The Rams are technically the home team, but the Patriots — and especially Tom Brady — have a much bigger international following and may get more fan support.
The Rams already had a taste of that in a home loss to Green Bay on Sunday.
Coach Jeff Fisher said "we had a lot of Green Bay Packer fans in our stadium last weekend. ... Didn't bother us, didn't have an impact on the outcome of the game."
Quarterback Sam Bradford said the Wembley game is "a big stage, a big opportunity."