Oh dear.

Another double fault and that's the end of the first set.

Not a nice way for it to go for Coco Gauff. She seemed to just crumble after that break of serve.

Gauff starts her service game with two double faults. Are we seeing some mental cracks now? The crowd try to lift the 15-year-old up again.

But she misses a backhand and Hercog has three set points.

Britain's Jamie Murray is ready to get back into action on court three, just a few hours after losing that intense five-set men's doubles match with Neal Skupski.

He is partnered with American Bethanie Mattek-Sands in the mixed doubles. They take on fellow Brits Joe Salisbury and Katy Dunne.

You can watch that match here.

Sonia Oxley
BBC Sport at Wimbledon

It felt like a lot of people forgot to breathe during that break point for Gauff - and they kept holding their breath during the Hawk-eye challenge.

And then they let out a collective sigh of disappointment.

Gauff looks a bit despondent as two successive serve returns go long.

Hercog serves an 120 mph ace to bring up 40-0. Gauff can't return the next serve either.

Is the fairytale nearing its end?

Image source, Getty Images

And it works.

Djoko slips and we're at deuce.

Oh Hubi!

A double fault makes it 30s each.

Another brings up break point.

The crowd try to lift the big Pole, so to speak.

Some of the best rallies and shots from day five...

Martina Navratilova
Nine-time Wimbledon singles champion on BBC TV

Hercog hit about 15 shots in a row to Gauff's forehand but when she changed it up she just hit that line.

There's more brilliant defence from the American but eventually Hercog lands the ball right on the baseline and it's one too many for Gauff.

Image source, Getty Images

40-30 followed by a first serve that Hubi can only get his racquet to.

Marching on.

15-30 as Djokovic goes long by a fair few cms with a forehand.

Have your powers grown weak Novak?

"Do not doubt me, you fools," responds the Serb, as he lands a volleyed winner.

Image source, Getty Images

Hercog spins a ball wide on the baseline and it's called out. But the world number 60 challenges and it was in! They will replay the point.

Gauff lands a forehand wide and finds herself at 30-30 again. She hits a low ball at Hercog and the Slovenian completely misjudges her swipe. Oops.

Hercog shouts as she comes to the net and hits a drop-shot to bring up break point.

Hurricane Hubi has been become Gust Hubi.

An error hands Djokovic a break.

John McEnroe
Three-time Wimbledon singles champion on BBC TV

Hurkacz looked a bit bewildered by how quick the ball was coming at him in the third set.

This time he should be prepared and think of it as an advantage. Be aggressive.

Wayne Ellis: Occasional member of the unbeaten Norton School cricket team. Didn’t score a run or bowl a ball, think I had a catch once.. #mylifeatfifteen, external

Should the big man have done better with his top-spin lob?

15-30 becomes two break points as Hubi slips at the back.

Hercog has Gauff running all over the place but the American is good for it, pinging back every attack until her opponent is forced to hit a forehand wide. 30-15.

This may be Guaff's first Grand Slam, but she's clearly at home with Hawk Eye. She stops play to challenge Hercog's second serve. It was indeed out.

The Slovenian closes the game out with a forehand winner on the next point though.

Martina Navratilova
Nine-time Wimbledon singles champion on BBC TV

Hercog has not come to the net that often, she's not comfortable there.