The Whites travel to the Amex Stadium to face one of the sides currently chasing promotion in the Championship.
Lewis Cook has claimed that Leeds' performances against some of the best sides in the Championship can give them plenty of belief ahead of their game with Brighton on Monday, the Yorkshire Evening Post reports.
Chris Hughton's men go into the game against the Whites off the back of an emphatic 4-0 victory over Bristol City, which helped them consolidate their position in the promotion race. And while their current form, as well as Leeds' poor record at the Amex Stadium - having never won at the ground - would suggest that the Seagulls have another three points in the bag, Cook suggested that United could upset the apple cart.
"It'll be a big test," he told the Yorkshire Evening Post.
"But I think we always do well against the form sides. For some reason we seem to do that. It's a good one for us and anyone can beat anyone in this league."
Two of Leeds' eight victories this season have come against sides currently in the division's top six - including a win against the leaders Hull City back in December - while they have also claimed draws against Burnley, Middlesbrough and Sheffield Wednesday, meaning that Brighton are the only side in the current top six not to have dropped any points to Steve Evans' men so far this term.
Despite United's promising record against the promotion-chasers, Evans will be under no illusions that it will take a brilliant performance for his side to get a positive result.
If Leeds do put in the kind of performance necessary to keep Brighton at bay, it could take just one moment of brilliance to swing the game in their favour.
And while Cook's goals to game ratio is not particularly inspiring, Evans may be hoping that he can repeat his stunning strike in their recent draw with Fulham as that would be the kind of moment of quality that Leeds may need to bag a victory.