With both sides drawing their previous matches, West Ham and Brighton head into their encounter at the London Stadium needing a win.
The two teams should have won their games last week but moments of madness from Andy Carroll and Bruno saw their chances of victories against Burnley and Everton scuppered.
It's a battle between 14th and 15th on Friday, with the Seagulls holding the edge over the Hammers due to their superior goal difference.
Here's everything you need to know ahead of the game...
Classic Encounter
Not a classic for Brighton fans, but West Ham's 6-0 victory over the south coasters in April 2012 maintained Sam Allardyce's side's automatic promotion hopes.