Jonathan Jurejko
BBC Sport at Wimbledon

Jo Konta needed three hours and 10 minutes to see off Donna Vekic the other day. She might have this one wrapped up in one hour and 10 if she gets a shift on.

Here's your eight-minute warning Jo...

Dave: Jo Konta really is a joy to watch. Her forehand down the line is epic.

Image source, Getty Images

Did you know that Konta would love to be on stage with Coldplay? Or that she is partial to top quality gelato?

There's probably a few facts you don't know about Konta, favourite to win Wimbledon, and you can read about them here.

Karen Khachanov is finally starting to make inroads into the Rafael Nadal serve as he gets the Spaniard to deuce.

But he wastes an opportunity as Nadal holds to move a game away from the second set.

Image source, Reuters

Chris Bevan
BBC Sport at Wimbledon

Image source, BBC Sport

Over on Murray Mound, ripples of applause, rather than sustained cheers, have greeted Johanna Konta's latest breaks at the start of the second set - I think many of these fans are a bit frazzled after spending more than five hours sitting in the sun, and those glasses of Pimm's might be taking their toll too.

Anyone feeling sorry for JJ? No, didn't think so.

Get back to Salford and do some proper work.

Maria Sakkari miscues one into the crowd and it's taken cleanly by a fan. Well caught! If you were David Beckham that would go viral. But you're not.

The first slip of the game as Sakkari slides a touch. She's OK though, and Konta goes 4-0 up with ease.

Image source, EPA

Jonathan Jurejko
BBC Sport at Wimbledon

Fans (and media types...) are only allowed into a court at the players' changeover.

If you don't get to your entrance before the umpire calls time then that means a wait. A three-game wait at the start of a set.

So if you missed your chance at Court One before the second set started then you'd be cursing that 10-minute opening game...

At least you'd have time to scoff down a sandwich while you wait.

Much, much better now from Jo Konta, really finding her range as she clubs a peach of a shot from the back of the court into the corner.

Moving Sakkari around with ease, a chance for a double break? Great hit down the line! That brings up a break chance, and she gets it as Sakkari can only volley tamely into the net.

Tracy Austin
Former Wimbledon mixed doubles champion

Konta is so absolutely focused between each point.

The "process" she always talks about, comes from her mental coach, the late Juan Coto.

She started thinking more positive about her game rather than thinking, "what happens if I lose this point".

The crowd sound a bit subdued, one man was fast asleep until his mate wakes him up.

One court, both players hold their serve, with Karen Khachanov finally looking like he has settled on Centre Court, albeit a set and a break down.

Shot! Maria Sakkari engineers an angle to lash a cross-court backhand winner into the lines. 0-15.

Konta then reads a miscued return to reach it and flick a winner over the net, this is better from the six seed. She holds.

Bethanie Mattek-Sands is having scans on a serious knee injury she picked up during her second-round singles match on Thursday.

The American screamed in agony after slipping during the third set against Romania's Sorana Cirstea on court 17.

A fourth deuce of the game. Sakkari fighting for this hold. Broken this early and it could be curtains.

Deuce six. Pull up a chair. That's much better from Konta though, consistently finding her range off both sides, driving Sakkari back and forcing an error which gives her a break!

Here's the moment Konta clinched the first set...

Nadal consolidates the break with a hold, Karen Khachanov is getting no joy on the Spaniard's serve.

The Russian then makes his life a whole lot easier by winning his service game to love, with four straight aces.

Tracy Austin
Former Wimbledon mixed doubles champion

Konta uses her legs so well. She gets so much power from getting down low and then uncoiling all the way through the body.

It's so important to do that on the grass.

Ten unforced errors for Jo Konta in that first set, her radar was not quite dialled in. For every ace (4) and winner (11) there's a shot clubbed long or wide.

If she is going to win Wimbledon she'll have to play better than this.

Sakkari plays a fine whipped forehand winner but Konta then does find her range, hitting six or seven superb drives off either wing to force deuce. When she can get it right, it's very right.

Like that! A fantastic passing backhand with Sakkari moving into the net. Break point chance - long. Deuce.

Image source, Reuters

Karen Khachanov stumbles on the baseline as his left foot gives way.

"You OK?" asks Nadal.

The Russian gets back to his feet with the dread that he has another three break points to defend.

A huge serve saves the first one, he finds the corner of the court with a wonderful forehand to save the next and then aces Nadal to get to deuce.

But all that hard work is wasted as Nadal breaks again.

There has been some erratic hitting from the Russian, who has hit 18 unforced errors already.

Image source, Reuters