Greek sensation Stefanos Tsitsipas almost self-destructed during a controversial third set against Nicoloz Basilashvili.
Tsitsipas was hit with two code violations while serving for the third set while leading 5-3.
Instead, he was forced to do it the hard way, through a tiebreaker, after he lost his temper after a controversial cancellation of the chair's refereeing.
At the set point, the Tsitsipas serve was erroneously called by a line judge, only for the chair referee to immediately cancel the call.
Basilashvili's turn came into the net, but the referee of the chair ordered the players to repeat the point, having decided that Basilashvili's shot was disturbed by the referee's call.
Tsitsipas fumed when the referee refused to give him the point and in a heavy double blow he was then struck with his second time wasted violation and was stripped of his first serve at the next point.
Tsitsipas then went on a long angry speech in Greek after the next point and was broken at the next point.
Listening admirers from all over the world interpreted Tsitsipas' speech and revealed that the 20-year-old used the worst word of the Greek language.
"" Fuck you, "he shouted." F *** your house. "
Clearly a wreck, Tsitsipas lost six straight points after the referee's annulment.
At the end of his service game, he was also hit with a code violation warning for unsportsmanlike conduct when he was heard saying "angry" to the attacker who made the wrong call on his serve.
"Tsitsipas is in a world of emotional pain," said Channel 9 commentator Geoff Masters.
The great tennis player Wayne Ferreira said that the referee went too far when he reached the code violation warning.
"I do not think the warning was necessary," he said. "All he said was" angry. "He should be allowed to express his emotion," he said.
Other tennis commentators were surprised by the incredible scenes.
Tsitsipas eventually recovered to take the third set 9-7 in the tiebreak to take a 6-3 3-6 7-6 lead into the fourth set.
It was much softer for No. 14 seed after regaining composure in the fourth set and he was able to seal his way to the Round of 16 with a 6-4 fourth set win in just under three hours.
Speaking later about the controversial appeal, the Greek star said: "It was one of those moments when I felt that they took something from me.
"It was a difficult game today. The conditions were different from the other days.
"I feel very comfortable here, I feel like I'm playing at home. It's exciting to have such an atmosphere when I'm on the court. "
He will now play the legend Roger Federer for a place in the quarter-finals after the Swiss ace also passed the American Taylor Fritz.
Tsitsipas, who was feeling much happier after his victory, joked that he would be rooting for Fritz hoping to avoid a confrontation with the mercurial veteran.
His wish did not come true and he now must face Federer for the second time this month after they also met at the Hopman Cup in Perth.