Brighton continued their excellent run of form against Manchester United under new manager Fabian Hurzeler as João Pedro rose to head a late winner in a 2-1 victory over the visitors at the Amex.
With five minutes of seven minutes played in added time, the home forward arrived unmarked in the United box to head beyond goalkeeper Andre Onana from Simon Adingra's pinpoint cross.
Danny Welbeck had given Brighton the lead with a tap-in finish on 32 minutes for his 100th competitive senior goal before a deflected drive by Amad Diallo levelled for Erik ten Hag's side on the hour-mark.
A draw was perhaps a fair result, but United will rue an offside flag going up against Joshua Zirkzee with 20 minutes left when Alejandro Garnacho's finish hit off his knee on its way into the net.
While Brighton move onto six points after their 3-0 win at Everton last weekend, United will be left to rue the defensive mistakes them saw them slump to a fifth defeat in six matches against the high-flying Seagulls.