Novak Djokovic will have another look at a break point. He can't afford to give Dino Prizmic any more encouragement with the crowd growing increasingly excited by the prospect of a memorable upset.

Outrageous shot from Dino Prizmic, facing break points against the world number one he lets rip with a forehand to save the first.

Another forehand, swept down the line, rescues the second.

This is a really important game now for Dino Prizmic after working so hard to turn this set around.

A miss gives Djokovic something to build on at 15-30 and another hands over two break points.

Image source, Reuters

Dino Prizmic is showing he is the real deal!

The world number 178 wins a third successive game to lead the third set against reigning champion Novak Djokovic.

We could have a massive story developing on the opening night at Melbourne Park...

Another break point for Prizmic.

Will it be third time lucky?

Relentless from Dino Prizmic, who reaches a second break point in this game.

But a tight forehand lets Djokovic off lightly.

Pat Cash
Former Wimbledon champion on BBC Radio 5 Sports Extra

I cannot work out this out. This is Grand Slam final type of material we're watching here.

Image source, Reuters

Novak Djokovic is once again hauled back to deuce by Dino Prizmic.

The world number one responds with a second serve ace, before cupping his ear to the crowd.

But he misses on the next point - and his frustrations will only grow with that. Into a 15th minute of this gripping fifth game.

Novak Djokovic rescues the break with brave second serve before setting up game point with a forehand winner.

Any more twists to come in this game? Perhaps! Impressive variety from Dino Prizmic stumps Djokovic, who loops a forehand long.

Image source, Getty Images

A terrific get by Dino Prizmic - and Novak Djokovic has no response! That receives the applause from the crowd it deserves.

Break point!

Pat Cash
Former Wimbledon champion on BBC Radio 5 Sports Extra

I don't think I've ever seen an 18-year-old move like this. I thought Carlos Alcaraz was fast!

Maybe this is all adrenaline but Dino Prizmic has got incredible speed.

A booming baseline strike from Djokovic is followed by a delicate drop shot to leave Prizmic with no hope of getting to it.

But there's another uncharacteristic miss from the top seed! Back to deuce.

Novak Djokovic drops a double fault to bring Dino Prizmic to deuce.

Novak Djokovic has made 29 unforced errors already in this match, compared to 25 for Dino Prizmic.

Could the unthinkable really happen here?

Prizmic wins a brilliant rally with slick touches at the net for 15-30 on Djokovic's serve. Is an upset brewing on Rod Laver Arena...?

Pat Cash
Former Wimbledon champion on BBC Radio 5 Sports Extra

It's got to be a little bit concerning for the Novak Djokovic camp.

They won't be panicking yet but they'll realise that the level of play from Dino Prizmic is not going anywhere

Russell Fuller
Tennis correspondent on BBC Radio 5 Sports Extra

Image source, Getty Images

When Novak Djokovic is pulling the trigger, he's making more errors than we're used to seeing.

All credit to Dino Prizmic, who is making this rather awkward for Novak Djokovic. The Serb's body language isn't great right now and he's finding it difficult to figure out how to get back on top of this.

Prizmic has won 21 of the 33 rallies longer than nine shots in this match so far. He is punching well above his weight and holds to 15 to level the third set.

David Law
Commentator on BBC Radio 5 Sports Extra

I am told that while it is not an official and big announcement, the Australian Open have decided to trial - or at least they are doing the thing that lots of people always say they should do - letting people come in after every game and not wait for the change of ends.

People in the crowd are being allowed to walk to their seats in the stadium after the end of each game instead of waiting for the players to sit down at a change of ends.

Do you think it's a good idea? Hit the thumbs...