Novak Djokovic now toying with his angry prey, a cheeky drop shot leaving Felix Auger-Aliassime flat-footed.

An almost nonchalant forehand winner into the corner of the court follows.

And, on the defence, he produces another similar superb strike, instinctive. Hold to love.

Tim Henman
Former British number one on BBC One

That's as good as we have seen from Novak Djokovic all match.

Ball-striking from corner to corner. Dragging Felix Auger-Aliassime. Picking him off with a beautiful forehand passing shot.

At the end of that game, we saw the frustration from Auger-Aliassime. He absolutely smashed the chair at the change of ends.

Todd Woodbridge
Former Wimbledon doubles champion on BBC One

That's the sort of tennis that could win this tournament!

Oof. Felix Auger-Aliassime tries his best to obliterate a changeover chair with his racquet during the switch of ends.

Novak Djokovic will LOVE seeing that.

Novak Djokovic is Superman.

At 39, he's getting stronger as the match goes.

Three break points on the Auger-Aliassime serve.

And he takes the first with a stunning passing forehand winner after a marathon rally!

Image source, PA Media

Image source, PA Media

We've been asking for your questions during Wimbledon and Sherry in Melrose asked:

What are those "vests" the men are wearing under their shirts? Flavio Cobolli's had a gadget in the middle of his back, visible when he changed at the end of the match.

We put the question to the All England Club, who said:

These are wearables that measure biometric details such as distance run and heart rate, among other things.

• Jannik Sinner is two wins away from defending his Wimbledon title - the world number one beat Jan-Lennard Struff in straight sets to secure a semi-final spot.
• Alexander Zverev was taken to four sets by Jiri Lehecka in a fourth-round match that was held over from Monday - the German will play Taylor Fritz in the quarter-finals on Wednesday.
• Coco Gauff beat fellow American Jessica Pegula in a deciding set to reach the Wimbledon semi-finals for the first time in her career. Gauff, seeded seventh, is the highest seed left in the women's draw.
• Naomi Osaka, who beat world number one Aryna Sabalenka in the previous round, was beaten in straight sets by Karolina Muchova.
• Great Britain's Henry Patten and Finnish partner Harri Heliovaara are into the men's doubles semi-finals, although the top seeds needed to win a deciding-set tie-break to progress.
• Alfie Hewett and Andrew Penney won in the first round of the men's wheelchair singles but Gordon Reid and Ben Bartram were eliminated, while Lucy Shuker and Cornelia Oosthuizen lost in the women's event.

Leon Smith
GB Davis Cup captain on BBC Radio 5 Sports Extra and BBC Sounds

I think that's the best set of tennis Djokovic has played in the past fortnight. He's serving very well, returning well and really increasing the groundspeed of his strokes.

Todd Woodbridge
Former Wimbledon doubles champion on BBC One

Novak Djokovic is a master of orchestrating the timing between points.

He will take a long time when he feels is necessary, but when he has got momentum he plays quickly.

Leon Smith
GB Davis Cup captain on BBC Radio 5 Sports Extra and BBC Sounds

Djokovic is lasered in right now. He's got a good read on the serve patterns of Auger-Aliassime. He's getting a racquet on it and a lot more returns.

And serve it out he does.

Aided admittedly by a Djokovic winner mid-game that clipped the baseline by millimetres.

Image source, Getty Images

Felix Auger-Aliassime ignores the antics on the other side of the net to ensure Novak Djokovic must serve out the set.

Tim Henman
Former British number one on BBC One

I think Novak Djokovic just told the umpire: 'You don't have to follow the machine' - but there isn't a machine?

Image source, PA Media

Novak Djokovic playing like he's 19 not 39.

Chasing down everything, playing aggressively.

And now challenging line calls... which is not endearing him to the Centre Court crowd given everything is now decided electronically.

Tim Henman
Former British number one on BBC One

Novak Djokovic is being way more aggressive from the back of the court now.

He is striking the ball with intent.

Leon Smith
GB Davis Cup captain on BBC Radio 5 Sports Extra and BBC Sounds

Djokovic has upped his game, he's commanding the baseline.

Auger-Aliassime is doing all the running now. This is a different Djokovic coming out to stamp his authority. He's upped a level.

Lovely night for a spot of high-quality tennis...

Image source, PA Media

Novak Djokovic finds the net having raced into a 40-0 lead on serve - he had won 11 of the 12 points prior to that.

It's only a slight blip on his way to another breezy hold and, likely, winning the third set.