In a tournament full of surprises, another unusual moment occurred when the first referee Felix Zwayer was affected by the scorching heat on Friday.Before Australia defeated the United States 0-2, Zwayer fell to the ground overwhelmed by the circumstances.The German referee appeared to be in a lot of pain during the injury. The players had to endure another six-minute delay after the player suffered a severe concussion.“Oh, here we go. I’ve seen it all now. The opposition is being crushed,” former Australian back Luke Wilkshire said on commentary.“It’s the first time I’ve seen a player help an umpire in that way,” added broadcaster David Basheer, referring to the time Australian defender Aiden O’Neill stepped in to help Zwayer stretch the wound.Cameras focused on the judge as he was given a drink to help him recover. Standing outside the touchline, protest assistant Katia Garcia quickly rushed over with refreshments.Watch:Garcia was also seen warming up and seemed ready to take Zwayer’s place if the situation required it.After receiving help and support from the players, Zwayer picked up the whistle and resumed. He finished the rest of the game as the event added another memorable chapter to this World Cup.Although Zwayer has presided over the biggest divisions of football, including the Bundesliga and the UEFA Champions League, Friday’s game was the first of its kind. FIFA World Cup.Co-hosts USA, meanwhile, had little to complain about as they secured a 2-0 victory over Australia and secured their place in the knockout stage, joining Mexico to advance from the game on a hot afternoon in Seattle.