Will the Owls or the Eagles come crashing to earth?
Sunday might prove to be decisive in determining the destination of the Premier League title but for sheer drama the game of the day is unquestionably the relegation shoot-out in the Championship between Sheffield Wednesday and Crystal Palace.
Wednesday occupy the third and final relegation slot in English football's second tier and need to defeat Palace at a sold-out Hillsborough to guarantee their survival.
Relegation would be an unpleasant step in the wrong direction for the Owls and their chairman Lee Strafford, who took over at the club he has supported since childhood on 7 January, 2009, but the club would survive.
For Palace, the future is far less certain - regardless of whether they win, lose or draw.
It has been a frustrating season for Palace and their supporters
Flamboyant chairman Simon Jordan has faded from view and the play-off push that looked possible under manager Neil Warnock disappeared with the 10-point penalty meted out after the club entered administration in January with debts of more than £30m.
Star man Victor Moses was then sold to Wigan in the transfer window and the funds generated used to paper over the financial cracks, leaving Palace increasingly exposed at a time when finding seven players to fill the bench was proving hard.
Worse still, Warnock departed for Queens Park Rangers at the start of March.
Successor Paul Hart has been unable to pull his team away from the mire in the weeks since, with Monday's match against West Brom typifying the agony and frustration that has been the story of the season for the club's supporters.
A win would have guaranteed safety for the Eagles but, after surviving wave after wave of attacks, they were denied victory deep into injury time when Marek Cech pulled off an improbable goal-line clearance.
Yet it could get a whole lot worse for Palace and their suffering fans.
Not only do they face the prospect of relegation to League One, the money that is currently keeping the club's head above water finally runs out on Monday.
CPFC 2010, a consortium led by local businessman Steve Parish, appears to be Palace's best hope of salvation.
It has been given preferred bidder status by administrator Brendan Guilfoyle, who has admitted that he will have to start selling off the club's players if there is no new investment by the start of next week.
But the situation is complicated.
Palace do not own Selhurst Park. In fact, it seems, nobody does because the company that owns the ground, like Palace, is in administration.
It has been widely reported that CPFC 2010 will only take over at Palace if it can arrange a deal to buy the ground as well. But - and stay with me here - the publicly owned Lloyds Banking Group, the major creditors on the stadium, may not sell it to CPFC 2010, whose bid is apparently not the biggest anyway. And if the ground is sold to a developer, then who knows what the future holds for the club.
I have been told by one Palace insider that relegation on Sunday is not a factor in whether a takeover materialises.
But if, as has been reported, CPFC 2010 is a reluctant buyer of the club then it hardly stands to reason that its enthusiasm will be enhanced by the prospect of third-tier football.
As for immediate funding to keep the club afloat, It may well be that, on Monday, the Eagles will ask the Football League if they can receive their "solidarity payment" early.
The exact figures of the payments will be discussed at a Football League meeting on Thursday but the amount will certainly be much greater if Palace remain a Championship club - a reported £2.2m against £325,000.
Manager Hart is not immune to the uncertainty engulfing the club. Appointed on a short-term deal at the start of March, the 56-year-old is at his third club this season after spells at Portsmouth and QPR. Whether he is at Palace next season is anyone's guess.
There are no such worries for Wednesday boss Alan Irvine, who will be in charge in August regardless of Sunday's outcome.
The revival was short-lived but Strafford remains convinced he appointed the right man to direct the club's long-term revival on the field.
Off the field, Strafford is committed to the two-fold plan that he announced upon his takeover. He wanted to "fix the Sheffield Wednesday family" after a period when the relationship between the supporters and the previous owners had become fractured as well as unearth much-needed new investment for the club.
In choosing the well-respected Children's Hospital as shirt sponsor as well as reducing ticket prices for Sunday's game, he has at least shown a grasp of how to connect with the local community.
Wednesday will be cheered on by a full house on Sunday
I would be very interested to hear what fans make of Strafford's tenure so far - but I suspect his reputation will be enhanced if he manages to make good on his pledge to bring in new funds to strengthen the playing squad.
American syndicate CLUB 9 SPORTS announced their interest last November. They believe the Owls can become one of England's top 20 clubs and have already made it clear that relegation would not affect their plans to invest. There are also several other potential investors.
The Owls claim they are confident of an injection of cash whether they are a Championship or League One side next season. Furthermore, they are adamant that, despite debts of more than £25m, their finances are under control and there is no possibility that relegation leads to administration.
Wednesday might be in better shape than Palace but there is no question that the prospect of relegation is a stressful issue for both clubs.
Strafford has spiced up the encounter by suggesting that Palace should have been relegated as a consequence of entering administration for a second time.
The gist of his argument is that the strength of Wednesday's playing squad has suffered as a result of belt tightening at the club, yet Palace have escaped with a 10-point penalty after failing to control their finances.
All the ingredients are in place for an afternoon of high drama, tension and excitement in front of more than 37,000 supporters at Hillsborough and countless others watching the match live on BBC television.
Relegation will be a blow to supporters of either side but if Wednesday go down their fans can at least take solace in the knowledge that they will definitely have a club to support next season.