Already early in the match there were hot feelings.

Nick Kyrgios thinks that a ball that was awarded was in and then the referee heard.

- Every match is a mistake.

Every single one of them, and we will accept that, he said.

It was in the second set that Kyrgios instead wanted to see Tsitsipas dished out for his kind towards the audience.

You could see the Australian talking to a race director for a long time.

Tsitsipas also later received a point deduction for hitting another ball unchecked.

The match is in progress.