Erik ten Hag accused his Manchester United players of an "unprofessional" and "unacceptable" performance as they crashed to a humiliating 7-0 defeat at bitter rivals Liverpool on Sunday.
United's stunning loss ranked as their worst ever defeat against Liverpool and the joint heaviest in their entire history.
Ten Hag's team collapsed after falling behind to Cody Gakpo's opener just before half-time. Liverpool scored six times in the second half, with Gakpo striking again, while Mohamed Salah and Darwin Nunez netted braces before Roberto Firmino capped one of the most astonishing results in Premier League history. United boss Ten hag was ashen faced on the touchline as the scoreline kept mounting and he admitted his players had let themselves down badly. "I think we played a decent first half. One mistake in organisation just before half-time. Second half it was just not us. It was not our standards. We didn't play as a team. It was unprofessional. Yes (I am angry). Definitely," Ten Hag told the BBC.
"I am surprised because I have seen the last weeks and months this team is resilient and has a winning attitude. Second half we didn't have a winning attitude at all. We didn't stick to the plan and we didn't do our jobs.
"We didn't track back and it was really unprofessional.
The incredible defeat came just seven days after Ten Hag's side had ended United's six-year trophy drought by beating Newcastle 2-0 in the League Cup final at Wembley.