Murray battles his way to an important hold and goes back to his seat to see what Coach Djokovic has to say.

"And that's how I won my eighth singles title at Wimbledon, guys."

Image source, Getty Images

Image source, Getty Images

Murray goes in search of an immediate break back and skips his way into a 0-30 lead.

But back comes De Minaur, taking the next three points before sealing the game with an ace.

Jonathan Jurejko
BBC Sport at the O2 Arena

Federer is back out there, headband on like he's Danny LaRusso.

Wax on, wax off.

He's ready to rumble. For one final time.

Might be waiting a while longer yet...

Now then, De Minaur battles his way to the first break point of the second set.

And the pressure shows! A double fault from Murray gifts the Australian the game and it's advantage Team World in the second.

Image source, Getty Images

Alex de Minaur holds and levels up the second set.

Roger Federer and Rafael Nadal have returned to courtside, by the way, waiting patiently to play their part in tonight's main event.

Murray comes out on top in another bruising exchange and moves 40-15 up.

Going to the net, he cracks a volley into the space and opens the second set with an entertaining hold.

Great match this one!

Wonder what the 'Big Four' had for dinner last night?

I had chicken and ham pie. They probably didn't.

Liz Tray: Feeling a lot of emotion about Federer retiring. The man was an artist, he played like nobody has ever done before. He was my late mum's fave. Every time I've seen him in the last decade, with her not here, I've felt tearful. All the matches she missed. Thank you, RF.

Oh yes! Murray at full-stretch sends a glorious baseline backhand past a despairing De Minaur. 15-30.

But Murray is furious with himself as an attempted drop shot goes awry before ballooning a forehand well long.

De Minaur takes the next point before Murray shows his deft touch to haul himself back to deuce.

In the dining room, Federer and Nadal share a fist bump as the former tucks into his pre-match meal.

Back on the court, Murray battles his way to a first set point. Can he take it? No! A sumptuous De Minaur drop shot forces Murray to net. Courtside, Djokovic falls out of his seat in disbelief.

A sweet Murray drop shot brings up a second set point, though, and this one he takes - after a marathon game!

Image source, Get

Jonathan Jurejko
BBC Sport at the O2 Arena

While many fans here on the Greenwich Peninsula have long had seats for tonight's matches, others have been frantically trying to get their hands on a golden ticket.

It's the tennis take on Willy Wonka's Chocolate Factory.

Alex Gough, from the East Midlands, is one of the dreamers of dreams.

The 39-year-old describes himself as a "die-hard" Federer fan, saying he had been "fighting hard" all week to grab a ticket.

"I tried to get tickets in the original sale but I was away so missed the boat. So when the news broke about his retirement it was a real stress because I needed to be there," he says.

"Because the tickets had sold out I needed to get one through the official resale site. I monitored the situation and saw Federer told the Swiss media he was only going to play doubles, which was likely to be on Friday.

"I decided to go for it then. It was last chance saloon."

The damage on the wallet? £600.

"The first 48 hours I wondered if I had spent too much cash. But since waking up this morning, and seeing the photos of Federer and the others at the Laver Cup dinner last night, I've been so excited.

"It will be worth every penny."

Image source, Getty Images

The epic 2008 Wimbledon final with Nadal? Winning the French Open to complete the career Grand Slam? Winning the Australian Open after his injury lay-off?

There's still time to vote for your favourite Federer moment!

What makes Roger Federer such a legend of the game?

The winning moments from all eight of his Wimbledon triumphs is a lovely trip down memory lane:

De Minaur again takes Murray to deuce, but the Scot wins an impressive point at the net - the crowd liked that one!

And they like that one too - De Minaur sends another tired-looking forehand into the net and it's a fine hold from Murray, who's in full fist-pump mode now.

This was how Billie Jean King paid tribute to Federer:

A pressure-packed game for De Minaur, but one he negotiates impressively as he holds to 15.

Tough to pick a winner in this one.

Matthew Vernon: Federer's the reason I fell in love with tennis. So graceful, elegant, ruthless, but such a lovely man. He's the reason I've braved The Queue, and been lucky enough to see him play on Centre. The GOAT debate transcends stats, it's emotional and Fed is right up there.

"Andy, you're in the groove, you're reading his game much better."

Nice words of encouragement from Novak Djokovic there.

After a bit of a ding-dong battle, Murray comes through another service game as De Minaur goes long.

Nine games, 53 minutes. Gruelling stuff.

It's hard to imagine Roger Federer bowing out with a defeat.

But we must temper expectations. Even if he is playing alongside Rafael Nadal, Federer has been out of competitive action since last year's Wimbledon. A long time.

Plus, Fedal are up against the comparatively youthful duo of Jack Sock and Frances Tiafoe.