Serena Williams retires injured at 3-3 in first set against Aliaksandra Sasnovich
Williams appeared to be hurt when losing her footing in fifth game of match on Centre Court
Roger Federer into second round after Adrian Mannarino retires one point into final set
Mannarino could not continue after slipping on court late in fourth set - also on Centre Court
Nick Kyrgios v Ugo Humbert 3-3 in final set when 23:00 BST curfew ends play on day two
Coco Gauff beats GB's Francesca Jones 7-5 6-4
Top seed Ashleigh Barty overcomes Carla Suarez Navarro 6-1 6-7 (1-7) 6-1
Dan Evans defeats Feliciano Lopez 7-6 (7-4) 6-2 7-5
Use play icon at top of the page to watch live coverage (UK only)
Federer 6-4 6-7 (3-7) 3-6 4-1 Mannarino*
Oooh. A Roger Federer forehand drifts just wide and he'll challenge it... wow! That's taken the tiniest of nibbles. Hawk Eye says it's in and Federer moves to 0-30 before the Frenchman hits back.
Federer 6-4 6-7 (3-7) 3-6 4-1 Mannarino*
Apparently there's a match on... and there's been a goal! You could probably hear the cheers from Centre Court.
#bbctennis
Jane: Wow, how much do we all love Federer?! Only Day 2 and this is already a cracking Wimbledon.
Shapovalov* 6-4 4-6 6-3 5-7 4-3 Kohlschreiber
That could be the decisive moment for Denis Shapovalov.
The Canadian 10th seed has broken German Philipp Kohlschreiber to lead 4-3 in the fifth set and is now just two games away from a place in the second round.
The winner of this one is a potential third-round opponent for Andy Murray...
Federer 6-4 6-7 (3-7) 3-6 4-1 Mannarino*
Magnificent. Roger Federer reaches like Michael Jordan to slam a volley beyond his opponent and canter to 40-0, before dicing a tricky volley into the guts of the net. He thunders down an ace to hold.
Jo Durie
Former British number one on BBC TV
Gauff looking a little constrained. She's not liking the movement on grass and it is inhibiting her strokes.
French Open champion Barbora Krejcikova has just begun her campaign against Danish teenager Clara Tauson.
Krejcikova, who won the Wimbledon doubles title in 2018 with Katerina Siniakova, is making her singles debut at SW19.
Elsewhere, Andrea Petkovic has just tidied up a 6-4 6-3 win over Jasmine Paolini, while Marta Kostyuk is 5-2 up on Kiki Bertens.
*Federer 6-4 6-7 (3-7) 3-6 3-1 Mannarino
Double fault for Adrian Mannarino and everything is suddenly feeling a little trickier for the left-hander, who could do no wrong in the past two sets. Roger Federer comes hustling to the net but jabs long and that's a let off, before cracking the tape as Mannarino holds.
Gerasimov 6-3 3-6 7-6 (7-5) 6-2 Clarke
Belarusian Egor Gerasimov has sealed a four-set victory over Britain's Jay Clarke on court 17, winning 6-3 3-6 7-6 (7-5) 6-2.
Struff 4-6 1-6 Medvedev
Daniil Medvedev is closing in on the second round after moving two sets ahead of Jan-Lennard Struff.
The second set only took 25 minutes to win for the second seed.
Tim Henman
Former British number one on BBC Two
Because Federer has made it look so easy for long, everyone expects him to put on a masterclass.
He hasn't got the hard yards under his belt on the match court.
Shapovalov 6-4 4-6 6-3 5-7 3-3 Kohlschreiber*
Canada's 10th seed Denis Shapovalov and German Philipp Kohlschreiber are locked in a great five-set battle on court 12.
Shapovalov has just held serve to make it 3-3 in the final set with three hours and 20 minutes played.
It could go on a fair bit longer yet...
Federer 6-4 6-7 (3-7) 3-6 3-0 Mannarino*
Here's how Adrian Mannarino won the third set - he needs to rediscover that momentum now.
Mannarino goes 2-1 up against Federer
Chris Bradnam
BBC Sport commentator at Wimbledon
He looks free all of a sudden. The shackles just thrown away.
Love hold to back up the break.
Federer 6-4 6-7 (3-7) 3-6 3-0 Mannarino*
Now Roger Federer is cooking.
Everything is suddenly a little more fluid for the 39-year-old, as are the vocals on his adoring faithful.
He holds.
* Jones 3-3 Gauff
Jo Durie
Former British number one on BBC TV
Good match so far from Fran Jones. Holding her position on court, getting lots of attacking shots in and making Gauff run.
Image source, Getty Images*Jones 3-3 Gauff
Katie Falkingham
BBC Sport at Wimbledon
Still on serve over on court two between Fran Jones and Coco Gauff.
Jones looks a little nervous. It's a big occasion for her. At the last change of ends, she took a moment to compose herself with some big, deep breaths.
Jones has ectrodactyly ectodermal dysplasia syndrome, a rare genetic condition. She was born with three fingers and a thumb on each hand, three toes on her right foot and four toes on her left, and was told she would never have a professional tennis career.
She had other ideas...
*Federer 6-4 6-7 (3-7) 3-6 2-0 Mannarino
A delightful drop shot followed by a winning volley and Roger Federer breaks!
Federer 6-4 6-7 (3-7) 3-6 1-0 Mannarino*
Oh! You don't need the luck going in Roger Federer's favour if you're Adrian Mannarino, but it does as the Swiss rattles the tape and drops one on the Frenchman's side. Two break points.
Federer 6-4 6-7 (3-7) 3-6 1-0 Mannarino*
Is this the start of the comeback? Roger Federer sweeps into a forehand that gets the crowd on their feet to move to 0-30... but then chunks another wide.
Image source, Getty Images