Tempers flared at Anfield during Liverpool's 2-2 draw with Brighton & Hove Albion and Jurgen Klopp lost his cool by furiously shouting at Virgil van Dijk midway through the second half.
The Reds squandered a two-goal lead in the Premier League clash, having gone ahead in the first half through Jordan Henderson and Sadio Mane.
Graham Potter 's men rallied back, though, with Enock Mwepu and Leandro Trossard scoring to set up a tense finish.
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But no more goals came and Klopp's men were forced to share the points on a day where title rivals Manchester City lost and Chelsea won.
The Liverpool manager showed his frustration by screaming at Van Dijk before Brighton's equaliser, with the Dutchman responding calmly and puffing out his cheeks.
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Van Dijk has had a tame return to action after missing most of last season with a serious knee injury.
The 30-year-old struggled in Saturday's match, with the Reds conceding a league goal for the first time since drawing with City at the start of the month.
His performance was criticised by supporters on social media, with one tweeting: "Van Dijk needs to go back to the person we knew, he is not the same defender."
Another added: "Van Dijk is the best defender in the world but he has to sometimes stop being a little too laid back."
Post-match, Klopp picked out what he "didn't like at all" about his team - even before kick-off.
"It feels like a defeat," the 54-year-old admitted to BBC Sport .
"It’s not only because we were 2-0 up and didn’t win, it’s because the game I saw, we scored two of the most beautiful goals I’ve ever seen us score, which were disallowed.
"The pressing goal for Sadio was just unlucky. If you want to teach pressing, you would show this situation. But disallowed for handball, I guess.
"[The] top moments in the first half where we showed how we can hurt Brighton. [We] played some top passes through the centre and played really good football but were only 2-0 [up].
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"In the second half, we were not good enough. The body language I didn’t like it all. It was like ‘oh my God, it’s really tough’. Yeah, it was clear before the game.
"The best way to defend Brighton is to have the ball yourself and play in the spaces where they are exposed, but we didn’t do that and that’s a problem."
Klopp continued to praise the opposition by saying: "The way they play is adventurous.
"That's the right way to play, I think. People still don't respect their quality.
"They might not win 35 games but they give everyone a game. That's their quality.
"Our quality should have been to have the ball and be smarter or clever. We opened the door for them and we paid the price."
