Newcastle United manager Alan Pardew admits his side were left to pay for their slow start and shaky defending at set-pieces after Manchester United beat them 3-0.
The Magpies went 2-0 behind early on to the visitors after conceding two goals from corners after the Red Devils made the brighter start.
Pardew thought Newcastle should have done better in the opening minutes but took positives from his side's display after they had regrouped.
He told Sky Sports: "At the start Manchester United were fast out of the blocks and I don't think we saw the ball in that period, the first eight minutes or whatever it was.
"We've conceded two from set-pieces and you can't give a team like Manchester United a two-goal lead. That's something we're going to have to cover and make sure we're better at next time.
"After that though, I have to say, I was proud of our team. We stuck at it, took the game to United, made a few chances.
"For the last 20 minutes of the first half I thought we were terrific. I thought we perhaps deserved a goal."
Newcastle's players thought Papiss Cisse had scored in the second half when it was difficult to tell if his shot had crossed the line, while replays showed United goalkeeper David De Gea had appeared to do enough to keep it out.
After looking at the incident again, Pardew admits the ball did not appear to go in.
He said: "The turning point was probably whether the ball went in or not and it looks like it just didn't.
"So it's disappointing because at the time I thought it was in by the reaction of the players.
"I think it's tight. Looking at the angles I've looked at it looks like it hasn't gone over the line."