Liverpool boss Jurgen Klopp questioned the match officials after their 2-2 draw with Brighton.
A brilliant early strike from Jordan Henderson was added to by Sadio Mane's header as the Reds went 2-0 up by the midway point of the first half.
However, Brighton halved their deficit before half-time through Enock Mwepu and Leandro Trossard equalised midway through the second period of a keenly contested match that featured several excellent saves from Alisson Becker.
Klopp reacted: "It is now a bit quick after the game to say anything immediately, [but] I think it is not nice to know how good Brighton are and then to score two goals which were disallowed. I didn't see it back, but I think it was probably close. The way Sadio celebrated – he knows a handball will be a disallowed goal, so I don't think he had it in mind that it could be disallowed.
"Mo's goal was incredible play, wow, so then [we] don't get that. We have many more games than Brighton and all these kind of things. They played during the week as well, of course, but we all had a lot of changes.
"I could see in the second half, I was not overly happy with the body language of some and that's obviously then never helpful, but you can get through these periods in a game – but just not against Brighton because they were here to get a result, they got a result, they deserve it and that's it."
Klopp added: "I know now when we talk now about defending and the whole football world will say that's why I am a pretty well-paid coach, but I don't discuss on that level. It's not only the last line, it's not only a centre-half, it's a common thing.
"Today we didn't defend the half-spaces right anymore and that was our problem there. With the way Brighton plays – I think I heard the word 'adventurous' a few times today and that's probably the right thing to say because they are pretty [much] on the front-foot in these moments – if you don't defend the half-spaces well then the last line has to drop a little bit, which makes no sense because they play between the lines and all this kind of stuff."
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