Matteo Berrettini applies a first hint of pressure on Auger-Aliassime's serve at 15-30, and the Canadian fires long to hand over two break points.

Auger-Aliassime saves the first with an excellent passing shot, but Berrettini makes the early breakthrough.

Zing. A 100mph return from Roger Federer, and John McEnroe called it exactly... he's pleased with himself for that one. But Federer hasn't got the legs to get up to a delightful Hubert Hurkacz drop shot, supreme nonchalance from the 24-year-old. Before miscueing a forehand! Deuce.

Andrew Castle
BBC Sport tennis commentator on BBC One

This time Federer gets out of it, and he's turning the momentum.

Katie Falkingham
BBC Sport at Wimbledon

"IT'S COMING HOME, ROGER", some joker shouts.

Now we're having a rendition of 'happy birthday'.

It's a rowdy crowd on Centre Court today. They're having some fun (and a few drinks)!

Britons Arthur Fery and Tara Moore are in mixed doubles action on court three against compatriot Neal Skupski and American partner Desirae Krawczyk.

There has been an exchange of breaks but otherwise it's been nip and tuck in the third-round tie, and the first set looks like it is heading for a tie-break.

Meanwhile, Naomi Broady and French partner Jeremy Chardy have just started their third-round tie with South African Raven Klaasen and Croatia's Darija Jurak and it's 1-1 with serve.

Lovely touch from Roger Federer and the crowd holler for the eight-time champion. And he does back up the break when Hubert Hurkacz frames a forehand wide. A big, big hold for the Swiss.

No early drama on Court One.

Both players get started with comfortable holds.

Roger Federer is having to dig deep here, he fends off a handful of break points to edge to advantage but cannot get over the line. Hubert Hurkacz is determined to break back immediately. Deuce.

John McEnroe
Three-time Wimbledon singles champion on BBC TV

I am not sure there is a bigger one-two punch in the game, with his serve and forehand. He can potentially take the racquet out of anyone's hand.

He will have to deal with the mement. Can he do this against Felix and if he faces Roger can he bring his A-Game?

He has to have a plan B

John McEnroe
Three-time Wimbledon singles champion on BBC TV

Felix is very strategic about everything he does and it is starting to pay off, and it will really pay off down the road.

He has worked hard and has improved on his net play.

I give the edge to Felix. It has taken him a while but he's figuring it out.

I mean what is going on in Canada? How are these guys so good and Americans are just lagging behind. Our North American cousins are taking it to us!

Here's how Felix Auger-Aliassime reached the quarter-finals, prevailing against fourth seed Alexander Zverev in five sets.

Roger Federer was sitting with three break points, Hurkacz saves the first two but then undoes that hard work with a double fault and Federer is at 2-0 up in the second, but a set down overall.

The last men's quarter-final match will soon be under way on Court One, as Queen's champion Matteo Berrettini takes on 20-year-old Canadian Felix Auger-Aliassime.

The crowd reaction may be getting louder now as Federer, a set down, has three break points early in the second, 0-40.

A Federer hold and the crowd serenade their hero, trying to motivate the 20-time Grand Slam champion.

John McEnroe
Three-time Wimbledon singles champion on BBC TV

Right now it just doesn't seem like Federer's body is responding as well as before. He looks a little flat out there.

Katie Falkingham
BBC Sport at Wimbledon

"Long live the King," the same guy as before shouts.

"Alright, Mufasa," someone replies. Who wants to tell him that it was Scar who said that...

Anyway, Roger Federer is a set down on Centre Court and nobody really knows how to react.

Andrew Castle
BBC Sport tennis commentator on BBC One

Very well played. Hurkacz had never been beyond a third round at a Grand Slam before, so breaking new ground.

Sometimes the floodgates open, you play with freedom.

After 28 minutes of action, Hubert Hurkacz, who had never been past the third round of a slam before this tournament, has just taken the opening set against Roger Federer in a Wimbledon quarter-final on Centre Court.

Federer started off this set by telling Hurkacz to serve first, but any nerves from the Pole have quickly left the building and Hurkacz leads.

A volley punched away at the net, followed by an unreturnable serve takes Hurkacz two points from the first set, 30-15.