Uniteds problem at the minute and I know lots and lots of other posters are going to barrack me for it, is the lack of quality from the back up players and the lack of stamina and failing abilities of our older players.
There is no way the likes of Park, O'shea, Neville, Scholes, Giggs, Evans and Berbatov should be on the pitch at the same time.
Evans is still very young granted, but he has clearly shot his bolt and running on empty, his decision making and overall play is getting sloppier by the game, he is picking up more and more injuries as he is forced to play far more games than he is realistically able to play.
Vidic and Ferdinand and now suffering as they have to pick up the slack each and every time they play, that in turn increases their cumulative fatigue, leading to more injuries, sloppy play through tired mind and body etc etc.
The same applies to Carrick, Ronaldo, Rooney and Tevez, as they are paired and forced to play with players whos legs have gone, whose play is sloppy, it drags them down to that level as the games go by and it brings the overall performance down.
It sounds contrived, but it applies to all our decent players, they get dragged down by the rest.
That applies to each and every team out there, its happened to Arsenal, its happened to liverpool, its happened to chelsea.