Nadal into the net!

And Nick Kyrgios maybe losing the Centre Court crowd, but he will serve for the second set and parity next!

Image source, AFP

The Serena Williams v Kaja Juvan match is now heading on to the BBC Red Button. It's one-one in sets and one-one in the third.

Nick Kyrgios rips an another monster forehand down the line to move to 15-30 on the Nadal serve.

He is training all his fire on the Nadal backhand, trying to get into the Spaniard's weaker wing.

A superb approach and a deft volley earn Kyrgios break point.

Jonathan Jurejko
BBC Sport at Wimbledon

Chair umpire Damien Dumusois probably wishes he could just pull a red card out of his back pocket.

Football and rugby referees would have done that for Kyrgios' sustained stick.

As it is, the Aussie gets his first yellow.

Massive cheers from the Centre crowd, who are getting as exasperated with Kyrgios' antics as Dumusois.

At the changeover, Nick Kyrgios tells the umpire to do something about Rafael Nadal not being ready to receive serve.

The umpire tells him that he will do so in his own.

"Feels good up there with all that power does it?" asks Kyrgios, before miming getting an electric shock from the umpire's chair on his way to the baseline.

He is issues with a code violation. This. Is. Cooking.

Image source, AFP

Juvan holds her serve at the start of the deciding set. A break next up would make this very, very interesting.

Chanda Rubin
American former world number six at Wimbledon

The fact that Serena won the very first game of the second set, that helped settle her down immediately. She has just dominated.

Image source, Reuters

Normality resumed on Court One. Serena Williams is too good and too powerful in that second set, winning it 6-2 after losing the opening set by the same score.

You'd expect Williams to go on and finish the job from here.

Nick Kyrgios buries a lax forehand into the net and is broken to love.

The second set is back on serve.

Image source, Getty Images

Nick Kyrgios unfurls a hugely ambitious drop-shot from behind the baseline.

It is swallowed by the net.

A raid to the net. And he misses the backhand volley.

Three break points for Nadal.

Laurence Mason: People moan about kyrgios and his antics but it's certainly enjoyable to watch for the neutral. Pure drama!

David Manning: If this #Kyrgios, external serve/ party trick is legal play why doesn't everyone else do it 'mix it up.

Image source, AFP

What do you think then?

Are those Centre Court patrons booing Nick Kyrgios' underarm serve moral guardians of tennis' sacred soul? Or easily-outraged armchair fans who have never played the game at anywhere near his level?

Let us know via 81111 on text or #bbctennis on Twitter.

The most interesting part of Rafael Nadal's latest hold of serve was Nick Kyrgios being plagued by the SW19 pollen. Three successive sneezes that for once meant Nadal had to wait for the Australian.

Nadal closes with a wicked, whipping forehand..

Chanda Rubin
American former world number six at Wimbledon

The movement looks better from Serena. She looks more confident and instinctive and she's cleaned up the unforced errors. It's why Serena is well in control in this second set.

Image source, PA Media

Kaja Juvan, on the stretch, can only reply to a powerful Williams stroke by going far too long and the seven-time Wimbledon champion has two breaks and serves for the set next up.

Boris Becker
Three-time Wimbledon champion on BBC TV

On Kyrgios' reception from the Centre Court crowd...

This is the old school of tennis. This is the church. Those unusual shots haven't been seen on this court in SW19.

Legitimate shots, but it's unusual for the fans here to see that.

Serena is closing out the second set, but this was the first one which went the way of the 18-year-old.

Nick Kyrgios with a mighty stand-and-deliver forehand winner from the baseline, shooting from the hip as well as firing from the lip, moves to 30-15.

Rafa nibbles back to 30-30.

But that serve is worth at least one free point a game. 40-15 as he stretches Nadal out of shape.

Another underarm serve! Nadal read this one, but can't prise it off the floor! Into the net!

And there was a fair bit of booing from the Centre Court crowd in reaction to that tactic...

A routine service hold from Williams in that sixth game.

Chanda Rubin
American former world number six at Wimbledon

Juvan is young, she's 18. The main thing that could come into play is not being match tough at this level.

You can just get some mental fatigue or uncertainty that comes into play when you're under pressure and you're not used to it. But she's kept this match tight in the second set.

Image source, Reuters