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
*Boulter 4-6 2-4 Grant
Tyra Grant can't miss at the moment as she arrows a forehand winner past a stranded Katie Boulter before holding to love.
You would never guess that this is the 18-year-old's first Grand Slam appearance going off this performance.
She's looked right at home.
Begu 4-6 1-2 Swan*
Emily Salley
BBC Sport at Wimbledon
Katie Swan, take a bow. What a way to break!
The 27-year-old stays in a mammoth rally with a mix of slices and hard hits, but she ends it with a delightful cross-court drop shot that leaves Irina-Camelia Begu with no chance.
Best not to get too far ahead of ourselves, but it's looking good in terms of Swan becoming the first British player to make it into the second round this year.
Image source, Getty ImagesLast year's women's runner-up Amanda Anisimova is a set and a break up against North Macedonia's Lina Gjorcheska on Court Two.
Madison Keys, a former Australian Open champion and the winner at Eastbourne last week, is heading for a first-set tie-break against fellow American Kayla Day. Keys is 6-5 up but Day is serving to force the breaker.
But 13th seed and former Wimbledon finalist Jasmine Paolini is in a bit of trouble against American Robin Montgomery.
The Italian lost the first set 6-0 on Court 12 but leads 3-1 with a break of serve in the second set.
Image source, Getty ImagesToday's Wimbledon Daily podcast is now available - Katie Smith is joined by commentator Gigi Salmon as well as former Wimbledon champions Pat Cash and Marion Bartoli.
They reflect on a bad day for the home players as 10 Britons lost, while Jack Draper withdrew with a recurrence of the arm injury he's struggled with for most of the past 12 months.
They also react to hard-fought wins for Novak Djokovic and Jannik Sinner, as well as more serene progress for Aryna Sabalenka in the women's draw.
*Boulter 4-6 1-3 Grant
Mel South
Former British player on BBC TV
It's really looked like Grant belongs out here today considering it's her first ever pro-level grass court event.
Boulter 4-6 1-2 Grant*
Katie Boulter isn't looking comfortable on serve and a double fault, followed by a wayward forehand, gives Tyra Grant the break in the second set.
Court three has gone very quiet and it feels like a long way back for Boulter from here against Grant, who has been very impressive today.
*Boulter 4-6 1-1 Grant
Mel South
Former British player on BBC TV
Boulter wasn't able to give herself a break point and that's what she needs to make the most of. I think she's found it really difficult to read the ball toss to the side of the box that Grant is playing the first serve.
Maybe you need to move that position and give another look to try and throw her off and really get onto the second serves.
Image source, Getty Images*Boulter 4-6 1-1 Grant
Harry Poole
BBC Sport at Wimbledon
Katie Boulter managed to get the home support into the match a bit towards the end of the first set, but it has all felt fairly flat so far on court three.
‘Let’s go Katie, let’s go’ was chanted as the players took a breather before set two, and she responds with a gritty hold of serve from deuce in her opening game.
Boulter lets out a huge roar after she swats away a final forehand, drawing cheers from the crowd.
She is absolutely going to need them here if she is to turn this around and give the British fans something to smile about.
*Royer 4-6 0-0 Wendelken
So far so good for Britain's Harry Wendelken on court 14, who has taken the first set 6-4 against France's Valentin Royer.
Ranked 202 in the world, Wendelken is playing in his first ever Grand Slam against 75th-ranked Royer.
Boulter 4-6 1-0 Grant*
Katie Boulter is facing some pressure at the start of the second set as Tyra Grant takes the Briton to deuce.
Boulter gets out of trouble with a strong first serve, followed by a forehand winner across court.
Boulter celebrates with a loud "come on" - can she now build on this?
Image source, Getty Images*Begu 4-6 0-0 Swan
Emily Salley
BBC Sport at Wimbledon
Katie Swan gets the first set with a confident love hold. Not a bad way to make your Wimbledon return after a three-year absence!
The British player strides over to her team with a clenched fist before talking tactics - she wants to stand further back for Irina-Camelia Begu's serves.
Let's see how that pays off in the second set.
Image source, Getty Images*Boulter 4-6 0-0 Grant
Mel South
Former British player on BBC TV
It's a set of tennis really that the beginning was so important wasn't it?
The early nerves and the fact that Grant hit two double faults in the second game and Boulter wasn't able to capitalise, and then got broken back.
The biggest difference in terms of behind the serve was the second serve points won for Grant. She was very aggressive on Boulter's second serve and took initiative.
Image source, Getty ImagesBegu 4-5 Swan*
Emily Salley
BBC Sport at Wimbledon
"COME ON!" shouts Katie Swan with a clenched fist.
She brings up the first break point of the match and she allows Irina-Camelia Begu to make the first mistake in a lengthy rally.
A huge chance for the Briton now to serve out the opener.
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Poor showing from the Brits yesterday, a few more chances today, but already not looking good for Boulter. The young Italian player looks assured for a first Wimbledon.
Joe
*Boulter 4-6 0-0 Grant
Tyra Grant continues to serve well as she wraps up the first set, with Katie Boulter struggling to get her returns in play.
Grant, 18, playing in her first Grand Slam and ranked 172nd in the world, has looked very impressive so far.
A lot of work for Boulter to do.
Image source, Getty Images*Begu 4-4 Swan
Emily Salley
BBC Sport at Wimbledon
We remain on serve on court 16 and we're yet to see a break point.
Katie Swan's team are sat right in front of me and they're looking fairly calm at the moment, telling Swan to keep doing what she's doing.
The 27-year-old follows their advice and races to a solid love hold.
Image source, Getty ImagesBoulter 4-5 Grant*
Mel South
Former British player on BBC TV
Grant has had about 50% effectiveness behind the drop shot so far but she just went a little deep there.
Right now it's the forehand side of Grant on this surface, on a faster court that Boulter should attack into.
*Boulter 3-5 Grant
Tyra Grant's first serve is a weapon as Katie Boulter struggles to get a return in play, which is followed up by an ace.
Boulter then spoons a backhand wide as Grant moves to within one game of the first set.
The crowd on court three are trying to encourage Boulter as the 29-year-old steps up to serve.
Image source, Getty Images*Boulter 2-4 Grant
Harry Poole
BBC Sport at Wimbledon
10 Britons out on day one. Nine more hoping to avoid the same fate on day two.
If as many as six more home players exit today, it will be the first time since 1988 that as many as 16 Brits have lost in the first round of the singles at Wimbledon.
Among the first to push back against that unwanted piece of history is Katie Boulter here on court three, but it hasn’t been the start she wanted to this match.
Italy’s Tyra Caterina Grant has the early break and consolidates with an ace.
Shouts of ‘Come on Katie’ broke the silence before the Brit stepped up to serve, but they were replaced by groans as her tough start continued with a double-fault.
You can catch up on the best shots from day one at Wimbledon below. There were some corkers.
'That's Federer-esque!' - best shots from day one of Wimbledon
