|Venue: All England Club Dates: 27 June-10 July|
|Coverage: Live across BBC TV, radio and online with extensive coverage on BBC iPlayer, Red Button, Connected TVs and mobile app.|
The Australian denied his opponent's claim that he was a bully, as the on-court drama spilled into the Wimbledon media interview room.
A crowd of people were watching a man shoot at his former doubles partner and receive a warning for hitting a ball into the crowd.
Television replays suggested that the ball did not hit the fan on the head, as the player claimed.
At the end of the second set, he lost his cool after being berated by the chairump.
It felt a bit like a circus. The young Greek said they were there to play tennis.
The drama continued into the third set as he received a point penalty for hitting a forehand that he said was aimed at the body of the opponent.
The match was in danger of being disqualified for one of them.
In front of a frenzied crowd under the Court One floodlights, Nick Kyrgios secured victory on his second match point in the fourth set.
The heat came back when they discussed the match with the journalists.
"I would be pretty upset if I lost to someone two weeks in a row as well, because I beat them in Halle last month and now lead them in their head-to-head," said the young man.
He should figure out how to beat me more often.
The first person to enter the All England Club's post match interview room was Tsitsipas.
The Greek said that the Australian had aimed his frustration at the umpire rather than his opponent.
He bully the opponents. He might have been a bully at school. I do not like being bullied. I don't like people who make other people feel bad.
There are some good qualities in his character. If it's exposed, he has a very evil side to him, which can hurt the people around him.
When the accusations were relayed to him by the reporter, he was unsure of how he had behaved.
The world number 40 said that he was the one who hit the ball at him and the one who hit the spectator.
I did nothing.
I didn't do anything against Stefanos that was disrespectful, I just went back and forth to the umpire. I wasn't using balls to drill him.
In his on-court interview, he said that he still "loves" the person he played doubles with.
He said in the news conference that he was not going on court to be friends.
We are not the same people. "I compete against guys who are real competitors."
That's what's holding him back if he's affected by that today.
If someone can do that, that will ruin his game. I don't think it's very strong.