Serena Williams' Wimbledon singles return ends with 6-3 6-7 (6-8) 6-3 defeat by 20-year-old Australian Maya Joint under Centre Court roof
Stan Wawrinka loses epic match 7-6 (9-7) 6-7 (16-18) 6-7 (7-9) 6-7 (5-7) to Matteo Berrettini in final Wimbledon appearance of his career
GB's Jan Choinski, Katie Swan, Arthur Fery and Jacob Fearnley all through to second round
Toby Samuel loses final-set tie-break as 15th seed Jakub Mensik advances, while Katie Boulter goes out in straight sets
Defending women's champion Iga Swiatek and Elena Rybakina both win three-set matches
French Open champion Alexander Zverev battles through in four sets but fourth seed Ben Shelton suffers shock defeat
Michelsen 6-3 6-4 0-0 Fearnley*
A mountain for Jacob Fearnley to climb now - he's two sets down to American Alex Michelsen.
Better news for fellow Briton Arthur Fery, though - he's broken back against Damir Dzumhur and is back on serve in the second set having lost the first 6-3.
*Virtanen 6-4 3-6 0-0 Shelton
It's 1-1 on court two, with fourth seed Ben Shelton taking the second set 6-3 against Otto Virtanen.
Image source, Getty ImagesTownsend 1-2 Swiatek*
Amy Lofthouse
BBC Sport at Wimbledon
It's difficult to know what to expect from Iga Swiatek - as that first game on her serve showed.
She hasn't won a title since Wimbledon last year and she only played one grass-court tournament in the lead-up to this year's championships.
Under pressure, she can become more error-strewn in an attempt to hit her way out of trouble. But that was an impressive hold against Taylor Townsend from 0-40 down.
Townsend 1-2 Swiatek*
Iga Swiatek makes Taylor Townsend pay for not taking those five break points in the previous game as she brings up three break points of her own.
The defending champion only needs two chances as Townsend goes long.
Swiatek clenches her fist in celebration and runs over to her chair before the change of ends.
*Townsend 1-1 Swiatek
Taylor Townsend is applying some early pressure here as Iga Swiatek has to save five break points.
The defending champion comes through a tough game as Townsend puts a forehand long on the stretch.
Will Townsend go on to regret not taking one of those early chances?
Michelsen 6-3 5-3 Fearnley*
Harry Poole
BBC Sport at Wimbledon
A member of staff returns with a restrung racquet for American Alex Michelsen.
“Who’s got scissors?” jokes somebody in the crowd beside me.
The 21-year-old world number 46 is continuing to make life very difficult for Jacob Fearnley with his huge, clean groundstrokes as he closes in on a two-set lead.
Townsend v Swiatek
Amy Lofthouse
BBC Sport at Wimbledon
You may remember that Iga Swiatek walked out of Wimbledon last year with the trophy and a stack of towels that she had been, er, “collecting” throughout the fortnight.
She’s already steered on her collection for this year after giving away most of last year’s stash to her friends and family.
Image source, Iga Swiatek/InstagramFritz 6-3 0-0 Lajovic*
On court one, sixth seed Taylor Fritz has just wrapped up the first set against Dusan Lajovic.
Fritz made the decisive break in the eighth game, converting his third break point.
The American clinched the set with a hold to love and dropped just three points across his four service games.
Image source, Getty ImagesTownsend 1-0 Swiatek*
It's a confident start from both players, with Iga Swiatek taking advantage of a slip from Taylor Townsend to whip a forehand past the American.
Townsend recovers well with some strong first serves to hold.
BBC Two is showing Briton Harry Wendelken's match against Valentin Royer right now, but you can watch Townsend and Swiatek on Centre Court here.
Brits struggle on day one and day two in SW19
Marion Bartoli
Former Wimbledon champion on BBC Radio 5 Live
When you look at the numbers, the only issue I'm finding - and it is the exact same problem in France as well - is Great Britain don't have enough players directly entering the tournament by their own ranking. There are only three British players in the top 100.
The difficulty comes from the other players receiving wildcards, which are incredible opportunities but you are most likely up against a player much higher in the rankings than you. Therefore, you have to cause the upset.
Great Britain have that young generation showing up, but they need to be inside the top 100 to give themselves a better possibility of going deeper into the tournament. Of course having seeded players is even better.
Dzumhur 6-3 2-0 Fery*
Great Britain's Arthur Fery was broken in the opening game of the second set, having lost the first set, and a couple of break-back points have gone begging for Fery in the following game.
*Arnaldi 6-4 1-6 0-0 Halys
Quentin Halys is back on level terms with 32nd seed and French Open semi-finalist Matteo Arnaldi.
The Frenchman broke Arnaldi's serve twice en route to taking the second set 6-1.
Day 7-6 (7-5) 4-6 3-6 Keys
26th seed Madison Keys is safely through to the second round, beating fellow American Kayla Day in three sets.
Keys trailed after losing a first-set tie-break but forced a decider after taking the second set 6-4 before breaking Day's serve twice in the third.
Image source, Getty Images*Royer 4-6 6-3 6-3 2-2 Wendelken
And with one massive forehand winner, Valentin Royer immediately cancels out Harry Wendelken's break advantage.
Royer 4-6 6-3 6-3 1-2 Wendelken*
Dom Inglot
Former British tennis player on BBC TV
And just like that the tables can turn.
Two unexpected forehand errors from Royer, one a little wild and the second he was just a little bit too close to the net. Maybe a little bit of over-adjustment and I think he felt a little bit rushed and he rushed himself
Royer 4-6 6-3 6-3 1-2 Wendelken*
Better news for Harry Wendelken, who breaks for a 2-1 lead in the fourth set, but he might be about to give that break straight back as he's 0-40 in his next service game...
*Virtanen 6-4 1-4 Shelton
Jeff Tarango
Former American tennis player on BBC Radio 5 Live
I think the expectation is getting to Ben Shelton. He is the Obi-Wan Kenobi - he is the Americans' only hope of winning Wimbledon.
He served three double-faults and just two aces in the whole of that first set. He didn't have a break point at all, whereas his opponent had four break points and got one of them.
He looks a little bit off-balance. He has stumbled and fallen down a few times. It just looks like things are a little bit off. He is going to have to really get it together because this kid Otto Virtanen looks good.
*Virtanen 6-4 1-4 Shelton
Ben Shelton is fighting back in the second set against Otto Virtanen, leading 4-1.
He raced to 3-0 and also had break points in fourth game of the set, with Virtanen eventually holding serve after coming through three deuces.
*De Minaur 7-6 (7-5) 0-0 Burruchaga
Fifth seed Alex de Minaur has come through a tie-break to clinch the first set against Roman Andres Burruchaga.
The Australian trailed 3-0 after losing his opening service game but broke back in the fifth game.
A messy tie-break saw both players struggle to win points on serve and De Minaur wasted two set points before eventually getting over the line.
Townsend v Swiatek
Up first on Centre Court shortly is defending women's champion Iga Swiatek, who starts her campaign against American Taylor Townsend.
Polish third seed Swiatek is a six-time Grand Slam champion but comes into Wimbledon in questionable form.
Following her fourth-round exit at the French Open, where she is a four-time champion, Swiatek began her grass court season with defeat by Emma Navarro in Hamburg last week.
Townsend is ranked 79th in the world but has never been past the second round at Wimbledon.
Image source, Getty Images
