Jiri Vesely (Cze) v Tomas Berdych (Cze) - play suspended due to bad light
LIVE: Mate Pavic (Cro)/ Michael Venus (NZ) v Jamie Murray (GB)/ Bruno Soares (Bra)
Andy Murray wins 7-5 6-1 6-4 v Australian Nick Kyrgios
Murray to face Jo-Wilfried Tsonga in quarters on Wednesday
Gasquet retires hurt in first set against Tsonga
Serena Williams beats Kuznetsova 7-5 6-0
*Williams 1-1 Kuznetsova
Lindsay Davenport
Former Wimbledon champion on BBC TV
It's always tough to play back-to-back days, especially at majors when there's even more tension and pressure.
*Williams 1-1 Kutnetsova
Serena Williams holds in the opening game and then earns break point on Svetlana Kuznetsova's serve.
They move to deuce when Williams hits long, and Kuznetsova has the advantage...but then she double fault. Back to deuce.
Eventually, Kuznetsova sees it out.
Image source, APGoffin 4-3 Raonic
Peter Fleming
Seven-time Grand Slam doubles champion
Talk about stellar returning games. David Goffin played several solid returning points.
Belgian Goffin, the 11th seed, breaks Canadian sixth seed Milos Raonic
Image source, PARadwanska 3-6 7-5 7-9 Cibulkova
The epic battle between Dominika Cibulkova and Agnieszka Radwanska featured tennis of the highest order.
Watch this rally and see for yourself.
Epic rally won by Cibulkova
Sam Smith
Former British number one on BBC TV
We've already had one great on Centre Court, and here is another, four matches away from equalling Steffi Graf's Grand Slam haul of 22.
Serena Williams is underway against Svetlana Kuznetsova on Centre Court.
Querrey 6-4 7-6 (7-5) 6-4 Mahut
Jonathan Jurejko
BBC Sport at Wimbledon
Image source, BBC SportNo post-Djokovic hangover for Sam Querrey. In fact, he's still partying hard. A straight-sets win against Nicolas Mahut - in little under two hours - sticks his name in the quarter-finals of a Grand Slam for the first time. Predictably he sealed it with an ace.
Halep 6-7 6-4 6-3 Keys
It wasn't an easy ride but Simona Halep has come through in three sets against American ninth seed Madison Keys to reach the quarter-finals.
Halep reached the semi-finals here in 2014 and will play Angelique Kerber in the next round.
Goffin 3-3 Raonic
David Goffin and Milos Raonic are underway in their fourth-round match on court two.
It's going with serve so far.
Canadian sixth seed Raonic is being watched by new coach John McEnroe, who is looking like a cool cat in his rascal head gear and shades.
Do you use the BBC Sport app – and if not, why not?
Did you know that you can now add tennis alerts – we’ll send you the biggest tennis news as it happens and let you know when key matches are starting.
Simply head to the My Alerts section in the menu to add them (you can also add alerts for other sports at the same time). If you want to know more, have a read here.
Federer 6-2 6-3 7-5 Johnson
Roger Federer speaking to BBC TV: "Best of five matches are always tough. It needs lots of concentration, the finish line is far away and it can turn really quick.
"I'm happy with how I played it is not easy as maybe it looked. Steve has picked up a lot of confidence in the last weeks and he has a nice game for grass but I think I mixed it up well here today.
"I would never have thought I would win the first four rounds in staright sets. The matches may be tough but rests are great for professional atheetes, that’s huge.
"It is nice that I have never missed Wimbledon. You can always lose a tournament in the first week but never win it.
"I now need to play my best tennis. I have Cilic in the next round, he brushed me off the court in the US Open a few years ago and I hope to get him back."
Image source, Reuters#bbctennis
Tom Hendryk: Worthy for any stage and any final. Not fair that someone had to lose that match. @ARadwanska, external and @Cibulkova, external that was amazing.
Lulu Gabrielle: What a game!!! Amazeballs #Cibulkova, external
Williams v Kuznetsova
It's been a hit-and-miss year for defending champion Serena Williams.
She lost in the Australian Open final to Angelique Kerber. She then lost in the French Open final to Garbine Muguruza.
But the all-dominating Serena we know and love was out on display on Centre Court yesterday.
She needed only 51 minutes to beat Annika Beck of Germany in straight sets to seal her 300th Grand Slam victory.
Can she clock up 301 today? Standing in her way is two-time major winner Svetlana Kuznetsova - the Russian 13th seed.
They're up next on Centre Court.
Wimbledon 2016: Best action as Serena beats Beck
Jonathan Jurejko
BBC Sport at Wimbledon
Image source, BBC SportAs you would expect on 4 July - American Independence Day - plenty of Stars and Stripes are dotted around SW19.
These two fellas - Tanner Potter and Luke Salisbury - have arrived from Utah today, digging their patriotic attire out of the suitcase especially for the occasion. Bandana, vest, shorts, socks - the full kit.
The colourful pair are peering over the side of Court 18 to cheer on Sam Querrey, who they reckon can go all the way this year.
"He's beat 'Joke-ovic' so he's no joke," quips Luke.
Image source, BBC SportAnd Tanner reckons it'll be a USA double with Serena taking the ladies' title. "Why not? Sam's got a frightening serve and is looking good, and Serena's already won 21 Grand Slams. We believe in the American dream."
Querrey 6-4 7-6 (7-5) 2-1 Mahut
Jonathan Jurejko
BBC Sport at Wimbledon
This one could disappear down the drain rather quickly for Nicolas Mahut. The French doubles specialist has never played in the last 16 of a Slam singles draw - and he doesn't look like extending that to a quarter-final after a poor start in the third set.
Querrey rockets his way to a break in the opening game, backing that up with a hold to love.
Mahut brings out his inner Indian Jones at the changeover, using his towel to frustratedly whip the chair into submission.
Chris Goldsmith: HUGE win for @Cibulkova, external 6-3 5-7 9-7 v Aga Radwanska ... brilliant match, had everything, both players gave everything
Tevon: Cibulkova vs Radwanska is the women's match of the tournament!
Hellie Hoo: WOT A MATCH!
Federer 6-2 6-3 7-5
Jim Courier
Former world number one on BBC TV
Federer speaks four or five languages and Johnson speaks one, American English.
Their games are a little bit like that as well.
Radwanska 3-6 7-5 7-9 Cibulkova
We have a winner! And look what it means to her.
On her third match point, Dominika Cibulkova slams a forehand winner past third seed Agnieszka Radwanska and she crumbles to the floor.
The Slovak is in a Grand Slam quarter-final for only the second time.
Should she think about moving her wedding now, perhaps? She's meant to be getting hitched on Saturday - the day of the ladies' final!
Image source, bbcChris Goldsmith: That Radwanska v Cibulkova was more than worthy of a Wimbledon final
James Stevenson: Finally! What an absolutely spectacular match from both players. Cibulkova is through to the quarter finals.
Derek Paterson: Anyone still want to say women's tennis isn't as good? This match is incredible!
Radwanska 3-6 7-5 7-9 Cibulkova
James Burridge
BBC Sport
A sensational match. A standing ovation. Matches like this, it's a shame there is a winner and loser.
Federer 6-2 6-3 7-5 Johnson
Sealed with a lovely ace.
Roger Federer sends a serve skidding down the T and out of Steve Johnson's reach to book his ticket to the quarter-finals.
He will play Croatia's Marin Cillic on Wednesday.
Image source, Getty Images