Lots of individual errors too, like ceding possession to the opposition in and around their defensive third of the pitch. I guess that is the logical consequence of your first point regarding Championship standard players, allied to the ruthless quality of the players they are facing. Yesterday...
In his post-match Interview yesterday Chris Wilder sounded completely broken. I know the Board have stated that he stays in position, regardless of the outcome of this season - but he really sounded as if he has nothing left.