Haaland's goal meant Dortmund got a draw in the Bundesliga match with Hoffenheim. It ended 2-2.
The striker used his strength and power to get past two players and be one on one with the keeper, who he beat with a powerful shot from close range.
But there was a fight afterwards. Posch argued with the Dortmund player for carrying on playing when Hoffenheim had a man down and both went head to head.
There was pushing and shoving and then Guerreiro and Sancho pushed Posch. The referee did not give anyone a yellow card.