Manchester United suffered their second successive defeat under Ruben Amorim as Nottingham Forest claimed a 3-2 victory at Old Trafford.
Nikola Milenkovic gave the visitors a second minute lead with the Serbian defender heading in a corner, before Rasmus Hojlund struck to get Man United back on level terms.
Forest stunned Man United after half-time with a Morgan Gibbs-White effort deceiving goalkeeper Andre Onana from distance, before a looping Chris Wood header dropped in to extend their advantage.
Captain Bruno Fernandes pulled a goal back for Man United on the hour mark, but the hosts were unable to fashion an equaliser.