Sofia Kenin beats women's seventh seed Coco Gauff 6-4 4-6 6-2
Venus Williams loses to Elina Svitolina after nasty slip on Centre Court
GB's Liam Broady, Jan Choinski and Jodie Burrage through, but Harriet Dart and Katie Swan go out
GB's Dan Evans loses first two sets to Quentin Halys on Court Two before bad light ends play
Men's champion Novak Djokovic defeats Pedro Cachin in straight sets to reach second round
Women's world number one Iga Swiatek beats Zhu Lin 6-1 6-3
*Swan 5-7 2-3 Bencic
Belinda Bencic won Olympic gold at Tokyo 2020 but Britain's Katie Swan is sticking right with her on Court Two.
She fights back from 40-0 down to take the Swiss' serve to deuce. But Bencic executes an excellent drop volley before a Swan return goes long at game point.
Wild about WIlliams or Wawrinka? Fired up by watching Fritz or Felix?
You've got a huge selection of matches that you can choose to watch right now on the BBC iPlayer.
Williams 4-6 0-2 Svitolina
Jonathan Jurejko
BBC Sport at Wimbledon
One can only admire Venus Williams's resilience here.
There are glimpses of the quality which still possesses, even with her lack of mobility, firing off forehand winners and aces to keep in touch.
But Svitolina is one of the games' great retrievers, bouncing around court and sticking plenty of balls back.
That is exemplified in a cracking rally at 40-0 in the second game, full of power and touch from both sides, which ends up in Svitolina's favour when Williams finally cracks.
*Williams 4-6 0-2 Svitolina
What a rally!
Smashes saved, lobs chased down, but Svitolina eventually takes it after a Williams error.
And she holds with a wide serve on the next point.
Williams 4-6 0-1 Svitolina*
Saved with an ace.
Williams 4-6 0-1 Svitolina*
Here's a chance! Venus Williams can break back immediately as Svitolina strikes the net with a forehand.
30-40.
Williams 4-6 0-1 Svitolina*
Marion Bartoli
Former Wimbledon champion on BBC Radio 5 Live
You can see what Elina is trying to do. Stay super steady, get down on her legs be compact on her swing and put as any balls back in the court as she can when Venus is tracking the ball well and try, I she can, to make her run.
The confidence and momentum is on her side.
Choinski 5-7 7-6 (7-4) 0-0 Lajovic
Briton Jan Choinski has managed to get himself back into his match against Serb Dusan Lajovic over on court 17.
The world 164 levels at one set all against his 56th ranked opponent, taking the second 7-4 in a tie-break.
There could be a long way still to go in this one...
Williams 4-6 0-1 Svitolina*
Venus Williams is broken for the third time as the five-time singles champion smashes another shot into the net.
Image source, Getty Images*Williams 4-6 0-0 Svitolina
A second chance for Svitolina. Williams errors again.
*Williams 4-6 0-0 Svitolina
But she saves it with a forehand winner, wrong-footing her opponent.
Image source, Getty Images*Williams 4-6 0-0 Svitolina
Break point Elina Svitolina. Venus Williams goes long with a wild backhand.
*Williams 4-6 0-0 Svitolina
Venus Williams has won 10 times at Wimbledon after losing the first set.
She's not out of this yet as she fires another ace. 30-30.
Swan 5-7 1-1 Bencic*
A hold to love at the start of set two for 14th seed Belinda Bencic will not make Britain's Katie Swan feel any better about losing that opening set late on.
This is only the second time Swan has ever faced a top-20 player - and the first time at a Grand Slam.
But Swan will feel better after her opening service game of the set - as she holds to love too.
Image source, Getty Images*Williams 4-6 0-0 Svitolina
After a six-minute break we're back at it.
Venus Williams limps to her mark.
Williams 4-6 Svitolina
Tracy Austin
Two-time Grand Slam champion on BBC TV
Venus got off to a great start, she got the break and was striking the ball beautifully.
Then she fell in the third game, got broken, and it took a couple of games for her to feel more comfortable and to trust her movement.
You've to remember she is playing against Elina Svitolina. She knows her way around big matches. She won't be intimidated.
Jonathan Jurejko
BBC Sport at Wimbledon
Out of the physio's bag comes strapping and spray.
A medical time-out for Williams.
Swan 5-7 0-0 Bencic*
It was such a tight first set, but it's Belinda Bencic who gets it in the end.
She breaks Katie Swan for a second time by taking her second set point to eventually end the Briton's stern resistance.
Swan will be confident that she has every chance of taking this the distance after that promising start.
Jonathan Jurejko
BBC Sport at Wimbledon
At the end of the set, Williams has another long chat with some concerned-looking medics...
*Swan 5-6 Bencic
More pressure from Belinda Bencic, again moving a couple of points away from the first set on Katie Swan's serve at 0-30.
Can the Briton turn this around again?
The crowd continue to cheer her every success, but despite battling back to 30-30 Bencic will have a set point.
A big point calls for a big serve, and yet again that's exactly what Swan delivers. Ace number nine brings up deuce.
