The two players have made their way out on court and you don't need to be Desmond Morris to read the body language.

Kyrgios, decked out in pink over-ear headphones, was heading out of the door, but turned round to look, with a little incredulity, at Nadal's pre-match habit of dropping his bag and doing a couple of bunny hops.

Zero eye contact and lots of heavyweight bouncing at the net as the coin toss in completed.

The Rumble in the Jungle? The Thriller in Manilla? Get ready for the the Drama at the end of the District Line...

Image source, Getty Images

Kyrgios and Nadal met in Acapulco in February, when the Australian turned in a typically maverick performance.

After losing the first set and complaining her felt ill, Kyrgios roared back winning -6 7-6 (7-2) 7-6 (8-6) via some underarm serving and some crowd taunting.

"He could win Grand Slams and fight the top positions of the ranking, but there is a reason why he is where he is [then at a world ranking of 72]," said Nadal.

Kyrgios responded with an Instagram post. "I can smell the blood when I play this dude", he wrote.

And here is Roger Federer: "I thought the crowds were great, they were really hoping for Jay to get into the match and he did that in the second set.

"I struggled to take care of business a bit from the baseline. Thankfully I played a pretty good breaker, I had some help from him as he gave me a couple of unforced errors.

"I really enjoyed myself. The tank is full. I came here with a lot of confidence, the first few matches haven't been very taxing physically. You try to win your matches regardless of the score, if you win them in straights that's better.

"This first week has been going well and I know the opponents in terms of ranking will now get better."

On young talent coming through: "It's refreshing to see new players. I love the story (of Coco Gauff), the same with Jay and new players coming through - unfortunately a few lost already. They will take care of business in the future and I will watch from the couch."

Image source, Getty Images

Kyrgios and Nadal's first meeting was on this very court back in 2014.

Nick Kyrgios was a 144th-ranked 19-year-old. Nadal was the world number one and reigning US and French Open champion.

It was the fourth round, but surely a formality.

What followed was a seismic upset as Kyrgios unfurled jumbo forehand after jumbo forehand to batter Nadal into four-set submission.

He revealed afterwards by an interview his mother had given saying that she thought that Nadal was just too good for her son.

Andrew Castle
BBC Sport tennis commentator at Wimbledon

Jay Clarke will remember that for a long time.

An ovation for Roger Federer on arrival and on departure.

Angelique Kerber, the reigning women's champion, is into a decider against American Lauren Davis.

It looked straight-forward for Kerber, winning the opening set 6-2 before she lost the second set by the same margin.

Johanna Konta said after her win:

"I played a very tough opponent. I was really pleased I could hold serve the way I did.

"She's very tricky and I knew at any point she could gain some momentum and start playing incredibly well.

"I really enjoyed my time out on Centre Court. I'm really happy to be through.When I go out there I'm nervous, excited, I feel all the emotions.

"I look to enjoy every opportunity I get to play at the Championships and on Centre Court. I never take it for granted.

On her next opponent, American ninth seed Sloane Stephens:

"When I step out onto the court against Sloane it's 50/50. I really enjoy playing great players and she's one of the best in the world. Hopefully it will be a good match for everyone to enjoy."

Image source, Getty Images

Image source, Getty Images

"He’s super salty. When he wins it’s fine, he will credit the opponent but as soon as I beat him he has no respect for me, my fans or the game."

Did someone order a side dish of sour grapes with extra spice for the final match on Centre Court?

Australian loose cannon Nick Kyrgios is on one side of the net. One the other side is the man he was talking about on the No Challenges Remaining podcast, external earlier this year; Rafael Nadal.

These two have history.

Double fault. And now Federer has two match points.

Ah! Exhibition stuff. Jay Clarke with the deftest of slices across the net, Roger Federer with a skip and poked return that just kisses the chalk. Clarke challenges, but it's good. 15-30.

Jonathan Jurejko
BBC Sport at Wimbledon

Remember the last time we saw Roger Federer on Court One?

Yep, when he led by two sets to love against Kevin Anderson in last year's quarter-finals. And he missed a match point in the third.

Then remembered what happened...

Anyone see Jay Clarke pull off a ridiculous comeback like that now? Nah, thought not.

Nevertheless, the 20-year-old can take plenty from this performance.

Andrew Castle
BBC Sport tennis commentator at Wimbledon

What has Jay Clarke got left?

This looks like it's coming to an end, but whatever happens here Jay has mixed doubles still to play.

Annabel Croft
Former British number one on BBC Two

Listen to that applause and quite rightly so. Almost a faultless performance from Johanna, exquisite serving and she has to be happy with that.

That serve out wide is becoming difficult for any opponent and she serves so aggressively. She is so confident, no sign of any nerves doesn't doubt herself and at ease with all the pressure sitting on her shoulders.

Johanna is not wasting any energy. You don't want long-haul matches at the start. She's been very efficient and it's a good day at the office for Johanna Konta.

Image source, PA Media

Roger Federer is almost toying with the British number four now, darting into the net and teasing him with a reverse winner. A hold to love.

Solid hold from Jay Clarke. He makes sure his Wimbledon dream will last a little longer.

Just an hour and nine minutes and Johanna Konta is through to the Wimbledon third round for the second time in her career.

That looked like such an easy victory for her, too.

But the British number one will have a tougher task next time - she faces ninth seed Sloane Stephens.

Konta can at least enjoy the cheers of the Centre Court crowd as she stops for a few selfies and autographs on her way out.

Jonathan Jurejko
BBC Sport at Wimbledon

If this was a football match I'd suggest this match was like a cup final being played at a neutral venue.

An even split of fans supporting each side.

The Fed Heads are as vocal as always, a collection of female voices shrieking 'Come on ROGERRRRR!" in unison, one bloke wearing a Basel FC shirt (Federer's team) as he stands up on the front row between changeovers.

Clarke is getting plenty of support, of course. Although I can't see any Derby County shirts...

Image source, BBC Sport

Jay Clarke watches the ball drop out of the SW19 sky and hammers it down into the turf with venom. Roger Federer returns with a rasping forehand on the next point that Clarke can reach on the stretch. 30-15.