Against the backdrop of the booing was the chanting, less offensive, perhaps even mildly amusing, that reflected the fierce rivalry between two great football clubs.

There was a fierce rivalry between the teams that didn't extend to any on-field niceties.

Despite the fierce rivalry, both teams know their most important fixtures await next weekend.

Of course, there are myriad other problems that come with working with family: nepotism, fierce rivalry and the looming issue of succession.

There has always been a fierce rivalry.