Erik ten Hag made a disastrous start to life as Manchester United manager as his side were beaten at Old Trafford by Brighton.
The Seagulls had never won at United's home ground before but turned in an impressive performance to undermine Ten Hag's work in pre-season. United rallied somewhat in the second half could couldn't force an equaliser.
United should have taken the lead early on, but Bruno Fernandes got underneath a deflected cut-back from Scott McTominay to blaze over the bar. Brighton made the hosts pay when Leandro Trossard and Danny Welbeck combined down the left to set up a tap-in for Pascal Gross at the back post.