Pat Cash
Former Wimbledon champion on BBC TV

Coming into these quarter-finals Rafa Nadal has probably shown the best form - against Nick Kyrgios he really had to play well and we've seen him fall short in the past against Kyrgios.

He probably has the edge at the moment but that doesn't really matter.

It tends to be now the best players click in. Once Novak Djokovic's focus locks in he doesn't miss and tends to be unbeatable.

Slobodan Maricic
BBC Serbia at Wimbledon

Earlier I spoke to former world number seven Mario Ancic, who reached the Wimbledon semi-finals in 2004.

The main topics of conversation between the Croatian and a small group of Serbian journalists were, of course, about Novak Djokovic...

"I have been following this tournament very closely and it seems to me that Novak is in really good shape. He seems very focused and when that’s the situation it’s very hard to play against him," Ancic says.

The 35-year-old famously beat Roger Federer here at Wimbledon - 17 years ago. Today, Federer is still playing…

"You are making me feel old," Ancic says with a smile.

"Federer is now almost 38 years old and I don’t see why Novak wouldn’t play as much as him. Except for that elbow problem, he hasn't had any other serious injury.

"That is fine now, he is elastic and fast, which is important when you get older.

"He could easily play as long as Federer has."

Annabel Croft
Former British number one on BBC Radio 5 Live

Novak Djokovic is like a machine, he's one of the most balanced tennis players I have ever watched on court - he seems to have so much time, the way he redirects the ball. His serve is so accurate, so it will be very tough for David Goffin to do it over the long haul.

...on to Centre Court.

It's another beautiful warm day at SW19.

Excited?

BBC Two

You can also watch the match on this page and you watch Pella v Bautista Agut, which is taking place on Court One, if you click on one of the other video links on this page.

Tim Henman
Former British number one on BBC Radio 5 Live

You wouldn't put it past Novak Djokovic.

He's a year younger than Rafael Nadal and five younger than Roger Federer. It's fascinating to see what the future holds as to the number of slams they'll win - five, 10 years ago you wouldn't envisage the battle would be so intense.

It's incredible how they have dominated the biggest and best events and I see it continuing.

The reality is the top three's level needs to drop for someone else to win one, unless something changes they'll keep winning.

John McEnroe
Three-time Wimbledon singles champion on BBC TV

People complain about Johanna Konta being robotic and mechanical and then complain when she reacts. The guy (reporter asking questions) is provoking her, no question about it. It's a win-win. The guy had a right to ask, and she had a right to answer.

READ: More on the Konta controversy here, external

Image source, .

I haven't aged as well Pat Cash.

Tim Henman
Former British number one on BBC Radio 5 Live

It will take a major change in form for David Goffin to cause an upset. I say Novak Djokovic in straight sets. He'll be dominant there.

It's a similar scenario for Kei Nishikori. His serve gets a little bit of help on a grass-court, he has some fire power and if he can play aggressively he could have some success but the start is important. Roger Federer in straight sets... one set could get close.

Roberto Bautista Agut in four sets - he's someone who has impressed me, to be playing this consistently and playing so well, it would be amazing for him to get through to the semis.

Sam Querrey has held serve 99% of the time and that's a great platform, but to have success against Rafael Nadal you need to attack the return - can he get to a tie-break? I think he can, maybe two. I'll say Nadal but in four sets.

Matt Colley: Dream doubles partnership: Kyrgios and Nadal. Just imagine.

Image source, Getty Images

But who will that be?

The Argentine or the Spaniard?

The world number 26 or the world number 22?

Guido Pella or Roberto Bautista Agut?

Image source, Getty Images

It's certainly new territory for 29-year-old Pella, whose previous best run at Wimbledon was a third round exit at SW19 last year. That's also his best ever at a Grand Slam, equal with his third round finish at the US Open in September.

He's beaten some big names on his way this tournament, with Milos Raonic and 2018 finalist Kevin Anderson among the casualties.

Image source, Getty Images

Bautista Agut, meanwhile, is the only player in the men's singles draw yet to drop a set and he has bettered his best-ever result at Wimbledon - fourth round exits in 2015 and 2017.

Bautista Agut has won both previous meetings between the pair, including a straight-sets win at the Australian Open in 2017, and will now aim to better his best ever Grand Slam result following his run to the Aus Open quarter-finals earlier this year.

Timings are approximate later, depending on length of matches but here's a rough timetable for the main attractions this afternoon (all BST):

13:00 Centre Court - Djokovic v Goffin

Court One - Pella v Bautista Agut

15:00 Court Two - Murray/Williams v Soares/Melichar

16:00 Centre Court - Nishikori v Federer

Court One - Querrey v Nadal

Katie Falkingham
BBC Sport at Wimbledon

Image source, LTA

Two-time Paralympic bronze medallist Jordanne Whiley will return to Wimbledon tomorrow for the first time since giving birth to her son, Jackson, in January 2018.

Her return to tennis after welcoming her "happy, lovely, cheeky" son has been quite something. Since her February comeback, she has won nine titles across both singles and doubles as well as team bronze at the World Team Cup.

So how is she feeling about her return to SW19? Read my piece with her here.