Remember we said Novak Djokovic did the splits a few moments ago...?

Those of you of an inflexible disposition look away now...

Holger Rune is battling away on Centre Court as Djokovic serves for the second set. 30 all.

Image source, Getty Images

Aly: Are some of the crowd not saying Rune rather than booing?

Pat Cash
Former Wimbledon champion on BBC TV

The players are chatting. Novak has got a little grin on his face now.

Maybe he understands what it’s about.

Holger Rune saves his own bacon with a vital hold. Can he break Novak Djokovic back?

John McEnroe
Three-time Wimbledon singles champion on BBC TV

Pedestrian serving by Rune is costing him.

He's giving Djokovic too many chances.

Holger Rune has now saved seven points in the game before he finally gives himself a chance to take the game on on his serve.

Emily Salley
BBC Sport at Wimbledon

I doubt doing the splits will help Novak Djokovic's knee.

But the 24-time major winner is up on his feet and it doesn't look like it has done him the slightest bit of harm.

Ouch. Novak Djokovic does the splits as he attempts to volley at the net to take the set but he is unable to get the full face of the racquet behind it.

Back to deuce.

Laura Robson
Former British number one on BBC Radio 5 Live and BBC Sounds

The coaching set-up for Rune is perhaps the most perplexing at the best of times. Patrick Mouratoglou is his coach although isn’t here which is very unusual considering there are only four Grand Slams a year. You would think they were going to prioritise that.

Then you look up and the player box is still quite full – analyst, physio, just about everyone else, but not really a coach.

Novak Djokovic fluffs a sliced drop shot as he advances to the net to squander the third of three set points. Deuce.

Nick Kyrgios
Australian tennis player on BBC TV

Djokovic's speed hasn't decreased but let's not forget about his knee.

He only had surgery about a month ago so he might be compensating for it with other parts of his body.

Holger Rune rushes through a service game and all of sudden Novak Djokovic has three break points to bank the second set.

Emily Salley
BBC Sport at Wimbledon

Despite getting that break, there is still something wrong with Novak Djokovic's stomach.

He clutches it and takes a few big gulps of air.

John McEnroe
Three-time Wimbledon singles champion on BBC TV

Novak Djokovic is absolutely rock solid when he needs to be.

I always wonder why he has to ask his coaching box where he should stand, though.

He knows.

Holger Rune guilty of trying to return the ball with too much vigour. A couple of occasions he wildly overhits to the back of the court allowing Novak Djokovic a chance to back up the break with a hold.

He takes it as Rune strikes the net cord again.

Laura Robson
Former British number one on BBC Radio 5 Live and BBC Sounds

I am spending most of my time watching Djokovic between the points here, There’s not much of a reaction. Still deep breaths. There’s certainly something going on with his body.

I feel that Rune’s so focused on his side of net, he’s not really seeing that Djokovic is struggling at the same time.

Emily Salley
BBC Sport at Wimbledon

The crowd are getting right behind Holger Rune.

"Ruunnnnnne," is belted out every time he hammers home a winner.

We all know how dangerous Novak Djokovic can be with a crowd against him, though.

Yet again Holger Rune finds the net to give Novak Djokovic a second bite of the cherry, and this time the seven-time Wimbledon takes the break-point chance.

A break point, and Holger Rune thinks he's saved it with an ace down the centre of the court, but it's deemed out. Holger's second serve is good, though, and it's back to deuce.

One for the sports scientists at Loughborough, Barbara. A bit beyond us.

Novak Djokovic appears to got his rhythm back and gives himself a little window to potentially break Holger Rune.