Manchester United manager Sir Alex Ferguson described his side's late collapse at Everton to draw 3-3 as "unthinkable".
Having gone behind to Steven Pienaar's 39th-minute goal, United appeared to be cruising to victory after Darren Fletcher, Nemanja Vidic and Dimitar Berbatov put them in control.
However, Tim Cahill powered home a header in the first minute of added time and Mikel Arteta's deflected strike levelled things up 60 seconds later to leave Ferguson fuming at a second defensive lapse in three games which cost them victory.
"It's amazing. We've thrown it away, like we did at the Fulham game (when Brede Hangeland hit an equaliser in the 89th minute)," he said. "You have to have determination in situations like that.
"We were so wasteful with our chances. We could have scored five or six in the second half with great opportunities and that has come to haunt us.
"But saying that, to lose two goals in injury time is unthinkable. We had it under control and the game is finished - even when they scored a second. It is a terrible end for us."