Leeds' 18-year wait to welcome Manchester United in front of an intimidating full house in the Premier League comes to an end on Sunday in the latest chapter of a rivalry that dates back 500 years.
The Wars of the Roses between 1455 and 1487 between the House of Lancaster and the House of York was fought for control of the English throne, but set in motion a battle for superiority that has existed ever since between the counties of Lancashire and Yorkshire.
Initially inflamed by the Industrial Revolution and the formation of county cricket, the two Uniteds of Leeds and Manchester have become the truest outlet for that enmity on the football field since first clashing for honours in the 1960s.
Both sides are under pressure to perform, but as is customary Leeds' struggles put United's problems into perspective.
Failure to finish in the top four and qualify for the Champions League would be deemed disastrous for a squad bolstered by the signings of Cristiano Ronaldo, Jadon Sancho and Raphael Varane with the aim of challenging for the title this season.
However, Leeds are in a battle at the bottom just to make sure they do not undo all the good work of Marcelo Bielsa's reign by being relegated.
Bielsa described staying up as "an obligation" on Friday and is keen to reward a loyal fanbase for their unwavering support in the Argentine.
"It's difficult to imagine a support bigger than the one we've already received," added Bielsa.
"The presence of a classic opponent increases the enthusiasm and it will be precious to be able to witness it.
"Of course, we think more about what we need to give to the public rather than what we need to receive from them."
What Leeds fans crave is victory when the whites and reds of Yorkshire and Lancashire clash again on Sunday.
