Manchester United boss Louis van Gaal admits they didn't play as a team for defeat to Swansea City.
Ki Sung-yueng stunned the expectant United fans by handing the visitors a first-half lead, before newly-appointed captain Wayne Rooney scooped an overhead kick home from close range to level the scores after the break.
But just when United were expected to go on and secure the victory Gylfi Sigurdsson bundled the past David de Gea, who should have done better, to get Van Gaal's reign off to a losing start.
"We didn't reach the level we have shown in the past matches and that is disappointing because this is the most important match," Van Gaal told BT Sport 1.
"We were disappointing in defence and we are disappointed with ourselves and that's why we lost today.
"You cannot say because of one game that we lost, and all the others we won, that it is the defence. It's the team.
"We never played as a team I think and that's our error and also we don't reach the required level and maybe because of that we haven't played like a team."
