Now it is Tomas Berdych's time to smash down an ace. A far more classic style than the languid Kyrgios.

The Australian chastises the umpire for not allowing him to challenge - despite making the call too late.

Kyrgios is enjoying himself. He forces deuce with an incredible flat low forehand pass. That is not in the text books... and he performs a little job to celebrate.

A calm Berdych serves it out.

Nick Kyrgios is taken to deuce on his serve but an ace gives him advantage.

A bizarre choice of shot though as Kyrgios plays the ball from between his legs from the baseline into the net. Why did he do that?

Another game point for Kyrgios after an ace but Berdych saves that with a winning forehand onto the baseline.

Another ace from a smilling Kyrgios but another winner from Berdych. Deuce again.

Incredible. Kyrgios's sixth ace of the game and he pumps up the crowd as Berdych goes long. He is undoubtedly an entertainer.

Image source, Reuters

Wow. Nick Kyrgios sends an absolute screaming forehand past Tomas Berdych. 15-30.

Berdych just ruthlessly slams down an unreturnable first serve in reply though.

Another break point for Kyrgios as he lands a shot just on the baseline and Berdych nets.

Double break secured with Berdych sending a forehand wide. The tide has turned.

Nick Kyrgios is constantly talking to himself.

He trades forehands with Berdych at 15-15 but, again, loses the battle as he is sent wide and nets.

Berdych can't return a big first serve though and it is back to 30-30.

Ace. 40-30. Thunderous first serve and Berdych can't return. Kyrgios is on a roll.

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Back on the Rod Laver Arena and Nick Kyrgios has a break point.

He needs this... Berdych second serve, Kyrgios returns deep and the Czech is wide.

More cheer for the home crowd. Some hope?

Some reason for cheer for the Australian crowd as home favourite Daria Gavrilova, 21, wins an absolute thriller.

She is victorious 11-9 in the final set against France's Kristina Mladenovic.

The Hisense Arena is going absolutely nuts.

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It's a thriller on the Hisense Arena, 9-9 now.

Back to the tennis... kind of.

Nick Kyrgios again drops his racket to the ground as he sends a forehand long to give Berdych two set points.

Ace and Berdych is in control.

Kyrgios meanwhile appears to have very little control... he goes back to continue shouting at the umpire.

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"Mate there is music when we are playing. Is it allowed to be playing?". Nick Kyrgios is continuing the argument.

The umpire responds by saying "I asked you if you wanted to stop". "No, you didn't" says Kyrgios. He did actually Nick...

Berdych sits on his seat with his eyes closed, totally unfazed.

Nick Kyrgios is losing the plot. It's good fun though.

The Australian is now upset about some noise coming from the crowd. "Music is okay?" he asks the umpire... who isn't quite sure what he is talking about.

Now - at 40-15 - he chucks his racket on the ground and starts laughing as he hears more music from somehow.

"You want to stop, we stop" says the umpire.

The Aussie plays on and holds - before carrying on his argument at the break.

Image source, Reuters

Nick Kyrgios is simply being outplayed at the moment. He can't find an answer to Berdych's serve...

Maybe I've spoken too early as an error from the Czech makes it 30-30. Big point.

No problems for Berdych though as Kyrgios dollies a return from a first serve short and the Czech powers away the winner.

Back to deuce - and again - but Kyrgios is left ranting at himself again as Berdych holds on.

Trouble for Kyrgios perhaps as he loops a forehand way over the baseline on the first point of the game.

Big trouble now as it goes to 0-30 after the Australian is wide with a backhand.

A clench of the first from Berdych, who sets up three break points with a booming forehand winner.

The first is saved but this is sensational from Berdych. Three deep approach shots have Kyrgios on the back foot and the Czach advances to the net to put away a short ball and earn the break.

A solid volley from Tomas Berdych at the net and Nick Kyrgios sends one well long.

The Aussie finds the net, unable to control his return from Berdych's first serve, and the game is won to 15 with Berdych's third ace of the match.

Great, great serving.

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The second set continues on serve.

A first serve down the middles curls away from Tomas Berdych and he wins the game to 30.

Now the Australian just needs to find a way to break Berdych's seemingly impregnable serve... easier said than done.

"Waaaaaahhh!" comes the reaction from Djokovic as he wins the tie break to be victorious in straight sets. 

Part of that scream was frustration that he wasn't on his best game, but Seppi's constant propensity to find the bottom half of the net on so much of his return play was the undoing of all his resilience.

Image source, ap