Four hours and counting...published at 17:18 British Summer Time 11 July 2018
Image source, BBC SportSummary
Men's singles quarter-finals action
Rafael Nadal beats Juan Martin del Potro to reach semi-finals
Spaniard wins 7-5 6-7 (7-9) 4-6 6-4 6-4 after nearly five hours
Faces Novak Djokovic after Serb beats Kei Nishikori 6-3 3-6 6-2 6-2
Kevin Anderson beats eight-time champion Roger Federer
Saves match point in third set to win 2-6 6-7 (5-7) 7-5 6-4 13-11
South African eighth seed will face John Isner in last four on Friday
American Isner beats Milos Raonic 6-7 (5-7) 7-6 (9-7) 6-4 6-3
Four hours and counting...published at 17:18 British Summer Time 11 July 2018
Image source, BBC SportPostpublished at 17:18 British Summer Time 11 July 2018
Nadal 7-5 3-2 Del Potro*
Rafael Nadal is just a grunting wall. The ball just keeps coming back to Juan Martin del Potro's side of the net. There's not a lot more the Argentine can do.
With a flash of his yellow and black racquet Nadal takes a 3-2 lead in the second set.
Image source, PAget involved Get Involvedpublished at 17:16 British Summer Time 11 July 2018
#bbctennis or text 81111
Dave W: Anderson winning service games because he is tall. Federer winning his because he is brilliant. Eventually RF will have a bad game but Anderson won't get any shorter.
Postpublished at 17:15 British Summer Time 11 July 2018
Federer 6-2 7-6 (7-5) 5-7 4-6 11-10 Anderson*
Boris Becker
Three-time Wimbledon champion on BBC TVIs it becoming a game of fitness and physicality eventually?
Federer holdspublished at 17:15 British Summer Time 11 July 2018
Federer 6-2 7-6 (7-5) 5-7 4-6 11-10 Anderson*
It's Monday morning, England have won the World Cup and Gareth Southgate has been given a knighthood - Roger Federer and Kevin Anderson are still playing the fifth set of their Wimbledon quarter-final.
The Swiss moves to an 11-10 lead with a meaty serve down the T. And we're past the four-hour mark.
Image source, Getty ImagesPostpublished at 17:14 British Summer Time 11 July 2018
*Nadal 7-5 2-2 Del Potro
Andy Murray
Two-time Wimbledon champion on BBC TVIt seems like Del Potro is getting a bit more variety on the serve, and a few more free points because of it.
Postpublished at 17:14 British Summer Time 11 July 2018
*Nadal 7-5 2-2 Del Potro
That'll give Juan Martin del Potro a little boost. He holds serve to 15 and Nadal misses a couple of returns.
Unlike on Court One, the crowd can't quite decide which player to back on Centre Court. It's very polite for both players.
'This could go on for a long time'published at 17:13 British Summer Time 11 July 2018
*Federer 6-2 7-6 (7-5) 5-7 4-6 10-10 Anderson
John Lloyd
Former GB Davis Cup captainYou can imagine what Milos Raonic and John Isner are thinking - 'when are we going to go on?' This could go on a long time if they keep serving like this...
Anderson holds to lovepublished at 17:12 British Summer Time 11 July 2018
*Federer 6-2 7-6 (7-5) 5-7 4-6 10-10 Anderson
Feel like we've been here before, like an Adam Sandler rom-com.
Kevin Anderson cruises to a love-hold. Back to you, Rog...
Image source, PAget involved Get Involvedpublished at 17:10 British Summer Time 11 July 2018
#bbctennis or text 81111
Lindsay: They need to wrap this up soon as I’ve got to get to work!
David: Come on Roger Federer, if you can finish this off now, I’d be very grateful. We’ve got a football match to go and watch.
Rose: This Federer-Anderson match taking so long. I can't get to watch my Nadal-Delpo in peace.
Postpublished at 17:10 British Summer Time 11 July 2018
Nadal 7-5 2-1 Del Potro*
Nadal is looking so secure on serve here on Centre Court. Completely unflustered. He wins the game, takes a seat in his chair and munches on a snack. No problems for the Spaniard so far. He's proving to be just a little bit better than Del Potro.
Image source, Getty ImagesFederer holds to lovepublished at 17:10 British Summer Time 11 July 2018
Federer 6-2 7-6 (7-5) 5-7 4-6 10-9 Anderson*
New balls for Fed, and he puts them to good use with some wrist-rattling serves.
Anderson manages to engage the Swiss at 30-0 but can only pop an awkward forehand into the tape, and then yanks another well long.
Someone in the crowd is hysterical. Chants of "let's go Roger" ring out.
We're into double figures.
Postpublished at 17:07 British Summer Time 11 July 2018
*Federer 6-2 7-6 (7-5) 5-7 4-6 9-9 Anderson
Boris Becker
Three-time Wimbledon champion on BBC TVIt was fast enough with old balls so now it is going to get even faster!
Postpublished at 17:07 British Summer Time 11 July 2018
This Twitter post cannot be displayed in your browser. Please enable Javascript or try a different browser.View original content on TwitterThe BBC is not responsible for the content of external sites.Skip twitter postThe BBC is not responsible for the content of external sites.Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
End of twitter postAnderson holdspublished at 17:07 British Summer Time 11 July 2018
*Federer 6-2 7-6 (7-5) 5-7 4-6 9-9 Anderson
Well, I thought my nerves might be in tatters at some point today, didn't expect it to be because of the tennis...
Deciding set, 9-8. NINE-EIGHT. Phew.
Kevin Anderson rattles down an ace, he's seen more of those today than a Vegas casino - 26 to be precise.
The South African hammers his way to another hold.
Image source, Getty ImagesPostpublished at 17:06 British Summer Time 11 July 2018
*Nadal 7-5 1-1 Del Potro
It's often difficult to tell how Juan Martin del Potro is feeling. He's got a languid heavy-footed walk at the best of times. He heaves his big size 12s into position between points here but gets through the game comfortably.
'Federer looks very calm'published at 17:05 British Summer Time 11 July 2018
Federer 6-2 7-6 (7-5) 5-7 4-6 9-8 Anderson*
Boris Becker
Three-time Wimbledon champion on BBC TVLook at Federer's face and body language. He's very calm. Doesn't look like he's broken a sweat! That's where he saves a lot of energy.
Postpublished at 17:03 British Summer Time 11 July 2018
Nadal 7-5 1-0 Del Potro*
Nadal powers through another service game. He'll be happy if this continues to be a physical battle.
Federer holdspublished at 17:03 British Summer Time 11 July 2018
Federer 6-2 7-6 (7-5) 5-7 4-6 9-8 Anderson*
Lovely stuff from Roger Federer, working Kevin Anderson around the court and clipping in a well-timed volley.
"We need to watch the football," shouts one fan... well.
The Swiss eases to a 40-0, before watching an Anderson winner soar past him. It rattles the 36-year-old slightly, he drags the next forehand into the tramlines.
Anderson thinks he's chipped in a superb winner from a tight angle, but it's just wide!
Anderson holdspublished at 17:01 British Summer Time 11 July 2018
*Federer 6-2 7-6 (7-5) 5-7 4-6 8-8 Anderson
The defending champion goes long, a chance for Kevin Anderson to close out another hold.
He hammers down an ace to do so. Eight games apiece in the final set.
Image source, Getty Images