Football

I suggest that whoever wrote that does not really know what they are on about. It's been pretty fiesty over the years when the clubs have been in the same division.
YouTube - Fulham 1-0 Chelski - pitch invasion

I was there that day and had the pleasure of seeing the police stand by and ignore a pitch invasion and Fulham fans exposing themselves (why?) to everyone in the Chelsea end.

Still, it only happens once every three decades and so it can hardly be seen as a red hot fixture. Chelsea really can't be bothered by Fulham. Brentford , on the other hand, really hate Fulham.