Brighton thrashed 10-man Sheffield United, who stayed bottom of the Premier League and conceded five goals at home for the third consecutive game.
The game swung in the 12th minute when United’s Mason Holgate caught Kaoru Mitoma in midfield with a horrific challenge just below the knee.
The Everton loanee was shown a yellow card, but it was upgraded to a red after intervention from the video assistant referee (VAR).
Against 10 men, Brighton attacked at will, taking the lead through Facundo Buonanotte, who bundled in a corner.
Danny Welbeck doubled the advantage, firing in a rebound after keeper Wes Foderingham denied Mitoma.
United’s Ben Osborn had a hooked volley ruled out for offside just before the interval.
Brighton got a deserved third when United defender Jack Robinson diverted Mitoma’s cross into his own net.
Simon Adingra added two late goals, burying Pascal Gross’ cutback and benefiting from a looping deflection.