Fulham goalkeeper Mark Schwarzer says no club is safe at Craven Cottage.
Tomorrow's rivals Manchester United came unstuck 2-0 last season.
Liverpool and Arsenal have also fallen victim and Aussie keeper Schwarzer, whose side are full of confidence after a superb win against Swiss side Basel on Wednesday, said: "We like ambushing the big teams at the Cottage.
"It's an old-style ground where the crowd are right on top of you and we've tried to create an atmosphere which is a bit different to its genteel image.
"We've shown we can beat anybody on our day and know the script - they will be expected to win and keep challenging for the title.
"But we've lost only once in 10 games and we'll be looking to keep that run going."