And if you want to know more about Federer's brutal dispatching of Milos Raonic, go here.
'Nobody is 100% healthy'
Djokovic retires
Boris Becker
Three-time Wimbledon champion on BBC TV
Most players have niggles and pains, nobody in the second week is 100% healthy. But only Djokovic can say how his body is, he knows whether he can play on or not.
It is the right decision. Murray and Djokovic were dominant last year but they are nowhere near that level now. It is a gruelling schedule and everybody else will put that extra 10% in to beat you.
'No sense' to continue - Djokovic
Novak Djokovic withdraws because of injury
At the post-match news conference, Novak Djokovic said: "It is not the shoulder, it is the elbow that keeps bothering me for over a year and a half.
"It is unfortunate that I had to finish Wimbledon Grand Slam in this way. If someone feels bad it is me.
"I tried. From yesterday I tried to get it in the condition where I could play.
"I could play with pain that was bearable for 30 minutes, but the serve and the forehand were shots where I could feel it the most and there was no sense (to continue)."
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'What fun this is!'
Henri Kontinen and Heather Watson get the break after a fantastic rally.
The Brit-Fin pair have gone to a tie-break in the first set on court two and you can watch here.
Murray has Becker's respect
Murray out of Wimbledon
Boris Becker
Three-time Wimbledon champion on BBC TV
It's remarkable that even after the loss he wouldn't blame the hip. That's how much of a sportsman he is. Respect to him.
The first week was pretty smooth up till the Fognini match. He went into the fifth set, won the last five games and then on Monday he looked pretty good.
But losing the second set after being a break up, that cost him.
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Federer through to the semi-finals after clinching tie-break
Seven time Wimbledon champion Roger Federer is through to the semi-finals after winning in straight sets.
Federer's well-wishes
Raonic 4-6 2-6 6-7 (4-7) Federer
More from semi-finalist Roger Federer: "We always knew the danger was there for either one of us. I hope that Novak is okay with his injury and I hope for Andy and Novak they will recover for the American summer. And Rafa, I'm convinced he will be back very strong.
"Berdych is a good friend of mine and it is nice to see different guys, but I'm glad my dream run has continued."
'It was a perfect setting'
Raonic 4-6 2-6 6-7 (4-7) Federer
Roger Federer speaking on BBC Two: "I can't believe it, 100 matches, it's a lot. I'm very happy my body kept me going over all these years. It was a perfect setting, beautiful weather - a Mexican wave on Centre Court, you don't see that every day! I'm so, so happy to be through.
"I'm very pleased with how I'm playing. You can always play a little better. You adjust to the conditions - it's like going to work, you can't produce the best every single day but you have to make sure your average is as high as possible."
The moment Djokovic retired
This is how it all ended for three-time champion Novak Djokovic at Wimbledon in 2017.
Post update
That was Roger Federer's 100th match at Wimbledon.
He's won 89 of them.
Get involved
#bbctennis
Aiden Semple: Federer on track for more #Wimbledon success after beating Raonic. Pure genius. Never anyone quite like him. Phenomenal at age 35
John-Paul Wares: Wow. Federer blows Raonic away & with today's results must now be a big favourite.
BreakingGame, set and match - Federer
Raonic 4-6 2-6 6-7 (4-7) Federer
With less than two hours on the clock, Roger Federer is through to the semi-finals.
What a performance!
He takes the tie-break as Milos Raonic shanks wide.
ReutersCopyright: Reuters
Match point
*Raonic 4-6 2-6 6-6 (4-6) Federer
Federer brings up match point with an ace...
'Pure genius from Federer'
Tim Henman
Former British number one on BBC TV
Raonic was covering the line but Federer has managed to hit outside of the ball and bend it back on to the line. Pure genius.
Post update
Raonic 4-6 2-6 6-6 (4-5) Federer*
Ridiculous. Just ridiculous. Federer lands a backhand in the most beautiful style, bending it back onto the line with ease.
Long on the return, though, and that breaks Federer's streak of five consecutive points.
Tie-break
*Raonic 4-6 2-6 6-6 (3-4) Federer
Federer comes right up to the net and fires past his opponent with wicked speed to level the tie-break.
Can he move ahead now? Yes, yes he can. With another volley. Nicccce.
Tie-break
Raonic 4-6 2-6 6-6 (3-2) Federer*
Federer gets on the point with a lovely forehand, picking up Raonic's low shot and smacking it back over, and Raonic nets his return.
And again! That's a stunner, going out wide to the serve and hammering a winner past Raonic.
Live Reporting
Caroline Chapman, Tom Rostance and Michael Emons
All times stated are UK
Get involved
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Sam Querrey v Marin Cilic
-
Roger Federer v Tomas Berdych
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Latest PostPost update
We're bringing our live text to a close, but you can still watch all the action from around the courts.
Heather Watson's in action in the mixed doubles on court two, while Martina Hingis competes in the women's doubles on Centre.
And don't forget: Today at Wimbledon is on at 20:00 BST on BBC Two.
We'll be back tomorrow for women's semi-final day.
Post update
And so, your men's semi-finals will be:
You can read all about Andy Murray's exit here, and Novak Djokovic's retirement through injury here.
And if you want to know more about Federer's brutal dispatching of Milos Raonic, go here.
'Nobody is 100% healthy'
Djokovic retires
Boris Becker
Three-time Wimbledon champion on BBC TV
Most players have niggles and pains, nobody in the second week is 100% healthy. But only Djokovic can say how his body is, he knows whether he can play on or not.
It is the right decision. Murray and Djokovic were dominant last year but they are nowhere near that level now. It is a gruelling schedule and everybody else will put that extra 10% in to beat you.
'No sense' to continue - Djokovic
Novak Djokovic withdraws because of injury
At the post-match news conference, Novak Djokovic said: "It is not the shoulder, it is the elbow that keeps bothering me for over a year and a half.
"It is unfortunate that I had to finish Wimbledon Grand Slam in this way. If someone feels bad it is me.
"I tried. From yesterday I tried to get it in the condition where I could play.
"I could play with pain that was bearable for 30 minutes, but the serve and the forehand were shots where I could feel it the most and there was no sense (to continue)."
From the press box
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'What fun this is!'
Henri Kontinen and Heather Watson get the break after a fantastic rally.
The Brit-Fin pair have gone to a tie-break in the first set on court two and you can watch here.
Murray has Becker's respect
Murray out of Wimbledon
Boris Becker
Three-time Wimbledon champion on BBC TV
It's remarkable that even after the loss he wouldn't blame the hip. That's how much of a sportsman he is. Respect to him.
The first week was pretty smooth up till the Fognini match. He went into the fifth set, won the last five games and then on Monday he looked pretty good.
But losing the second set after being a break up, that cost him.
Murray speaks out
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Federer through to the semi-finals after clinching tie-break
Seven time Wimbledon champion Roger Federer is through to the semi-finals after winning in straight sets.
Federer's well-wishes
Raonic 4-6 2-6 6-7 (4-7) Federer
More from semi-finalist Roger Federer: "We always knew the danger was there for either one of us. I hope that Novak is okay with his injury and I hope for Andy and Novak they will recover for the American summer. And Rafa, I'm convinced he will be back very strong.
"Berdych is a good friend of mine and it is nice to see different guys, but I'm glad my dream run has continued."
'It was a perfect setting'
Raonic 4-6 2-6 6-7 (4-7) Federer
Roger Federer speaking on BBC Two: "I can't believe it, 100 matches, it's a lot. I'm very happy my body kept me going over all these years. It was a perfect setting, beautiful weather - a Mexican wave on Centre Court, you don't see that every day! I'm so, so happy to be through.
"I'm very pleased with how I'm playing. You can always play a little better. You adjust to the conditions - it's like going to work, you can't produce the best every single day but you have to make sure your average is as high as possible."
The moment Djokovic retired
This is how it all ended for three-time champion Novak Djokovic at Wimbledon in 2017.
Post update
That was Roger Federer's 100th match at Wimbledon.
He's won 89 of them.
Get involved
#bbctennis
Aiden Semple: Federer on track for more #Wimbledon success after beating Raonic. Pure genius. Never anyone quite like him. Phenomenal at age 35
John-Paul Wares: Wow. Federer blows Raonic away & with today's results must now be a big favourite.
BreakingGame, set and match - Federer
Raonic 4-6 2-6 6-7 (4-7) Federer
With less than two hours on the clock, Roger Federer is through to the semi-finals.
What a performance!
He takes the tie-break as Milos Raonic shanks wide.
Match point
*Raonic 4-6 2-6 6-6 (4-6) Federer
Federer brings up match point with an ace...
'Pure genius from Federer'
Tim Henman
Former British number one on BBC TV
Raonic was covering the line but Federer has managed to hit outside of the ball and bend it back on to the line. Pure genius.
Post update
Raonic 4-6 2-6 6-6 (4-5) Federer*
Ridiculous. Just ridiculous. Federer lands a backhand in the most beautiful style, bending it back onto the line with ease.
Long on the return, though, and that breaks Federer's streak of five consecutive points.
Tie-break
*Raonic 4-6 2-6 6-6 (3-4) Federer
Federer comes right up to the net and fires past his opponent with wicked speed to level the tie-break.
Can he move ahead now? Yes, yes he can. With another volley. Nicccce.
Tie-break
Raonic 4-6 2-6 6-6 (3-2) Federer*
Federer gets on the point with a lovely forehand, picking up Raonic's low shot and smacking it back over, and Raonic nets his return.
And again! That's a stunner, going out wide to the serve and hammering a winner past Raonic.