With United leading 2-1, Jose Mourinho implemented familiar tactics to repel Liverpool, defending deep but defending well as the away side's talented forward line failed to find the crucial finishing touch.
When asked if United deserved credit for the way they stopped his side, Klopp responded: “Of course that's good. Absolutely, there's no criticism, that's the way you have to defend.
“I'm sure they'd want to have a few more counter attacks, that didn't happen. It was intense for them, you saw the players had no fresh legs any more at the end, that's absolutely normal. It's a big fight, two teams, we have to chase the game.
“I'm not interested, sorry, in Manchester United and giving them credit for defending. They had defenders but we should have scored twice, and we defended them that they could score twice, so what is better?
“In the end, it's about scoring or not conceding. I saw it after the game, it felt already very very [average?], and after the game with the penalty situation you think: Come on, that's not fair."
Klopp added: "Again, you need a little bit of luck. They had luck. It was a deflected ball, the ball came down, maybe the second challenge I'm not sure, there are refs who would whistle it. The arm was high from Lukaku, there are refs that whistle it, but would I whistle it?
“Not sure but sometimes it's like this. Nobody talks about it any more. 1-0 down changed the world for us, 2-0 feels really bad so early and that you can immediately switch off, of course we are not that far in our development."