Michael Dawson admitted he was convinced we'd take some reward from Old Trafford after Ledley King's equaliser on Saturday.
Ledley powered home a header from Gareth Bale's corner to level it up at 1-1 in the 70th minute after Ryan Giggs had opened the scoring for United from the penalty spot.
That sparked our best spell of the game but United managed to turn it around via Nani's fine goal in the 81st minute and wrapped up a 3-1 with Giggs' second penalty five minutes later.
"It was a big disappointment, especially conceding the three goals" reflected Michael.
"We went in 0-0 at half-time and even though we knew we hadn't played that great ourselves, we were well in the game and doing a job.
"To give the first penalty away was a blow and it was always going to be an uphill climb from there but we got back into it and we all believed we were going to get something out of the game.
"At one point I thought we'd go on and win it.
"Certainly once we scored we settled down and played the best football we'd played all game. We got on top of them and that was the case when they scored their second goal.
"It was disappointing to concede in the way we did and that knocked us back.
"After playing so well against Arsenal and Chelsea we all believed we could go there and get something out of the game.
"Everyone was full of confidence but it wasn't to be."