Watch up to 15 courtspublished at 11:43 British Summer Time 1 July 2019
So much going on and we have it all covered on the BBC Sport website and app and BBC iPlayer with live streams from every court.
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Summary
15-year-old qualifier Cori Gauff stuns Venus Williams 6-4 6-4 in first round
GB's Kyle Edmund beats Jaume Munar 6-4 6-4 6-4 on Centre Court
Second seed Naomi Osaka stunned 6-7 (4-7) 2-6 to Yulia Putintseva
Sixth seed Alexander Zverev & seventh seed Stefanos Tsitsipas knocked out
Britain's Heather Watson beats Caty McNally 7-6 6-2
Djokovic wins in straight sets
Watch up to 15 courtspublished at 11:43 British Summer Time 1 July 2019
Postpublished at 11:43 British Summer Time 1 July 2019
*McNally 3-4 Watson
That's a very good game to keep hold of from Heather Watson as she had to save two break points but, for the first time in the match, she leads, with McNally to serve next.
Language!published at 11:39 British Summer Time 1 July 2019
McNally 3-3 Watson*
Sonia Oxley
BBC Sport at WimbledonA very audible obscenity from Heather Watson at that latest miss goes seemingly unnoticed by the umpire.
Postpublished at 11:38 British Summer Time 1 July 2019
McNally 3-3 Watson*
Heather Watson is in danger, once again, of ruining her good work and immediately losing her serve after just getting a break. A couple of wide serves save two break points. Deuce.
Wawrinka gets early breakpublished at 11:36 British Summer Time 1 July 2019
Sizzling Stan Wawrinka is off to a flyer. The Swiss 22nd seed leads Ruben Bemelmans 4-1 after breaking early in the first set.
Meanwhile, Roberto Bautista Agut was a break up against Peter Gojowczyk but the German has just clawed his way back to 4-3 on serve.
Watson brings us back levelpublished at 11:36 British Summer Time 1 July 2019
McNally 3-3 Watson*
A chance for Heather Watson, holding two break points. On the first of them, the American charges forward and Watson aims to send one past her but just goes a slight bit too long.
But then a looping forehand from McNally is out and we're back on serve.
Six games in and only twice have the serves been held. Level again at 3-3. A good match to have chosen for all the fans that have descended to Court 12.
'Both players nervous'published at 11:33 British Summer Time 1 July 2019
*McNally 3-2 Watson
Jo Durie
Former British number one on BBC TVThey will both be nervous in different ways.
Heather Watson will obviously be desperate to win, but it's a big stage for the young Caty McNally.
Around the groundspublished at 11:33 British Summer Time 1 July 2019
It remains on serve at 3-3 in eighth seed Elina Svitolina's battle with Australia's Daria Gavrilova on court 18, while Madison Keys leads Thailand's Luksika Kumkhum 3-2 on court 17 - that one is also on serve at the minute.
Sofia Kenin is a break to the good against Astra Sharma, though, leading 4-2.
Postpublished at 11:32 British Summer Time 1 July 2019
We've got live radio commentary on BBC Radio 5 Live from midday and here is the view from 5 Live Mission Control.
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End of twitter post“We need a medic”published at 11:31 British Summer Time 1 July 2019
Sonia Oxley
BBC Sport at WimbledonA woman rushed down the stairs shouting “excuse me, we need a medic!”. Play continued between Watson and McNally while the medical staff tended to someone in the stands.
It seems to have been sorted now.
Postpublished at 11:30 British Summer Time 1 July 2019
*McNally 3-2 Watson
A much-needed hold for Heather Watson, her first at Wimbledon this year. A crouching two-handed backhand return from the American hits the top of the net and that takes us to 3-2, with McNally a break ahead.
Postpublished at 11:27 British Summer Time 1 July 2019
McNally 3-1 Watson*
It has taken four games, but we finally have a hold of serve as the 17-year-old Caty McNally jumps into a two-game advantage.
Work for Heather Watson to do.
Anderson breakspublished at 11:27 British Summer Time 1 July 2019
*Anderson 3-1 Herbert
And the early advantage goes to Kevin Anderson, who takes the first break on court three.
Anderson won eight points in a row to hold serve and then break Pierre-Hugues Herbert.
Long way back for the Frenchman against the big-serving fourth seed in this opening set now...
Anderson leads on servepublished at 11:24 British Summer Time 1 July 2019
Anderson 2-1 Herbert*
Image source, BBC SportKevin Anderson has just whistled through a love hold to make it 2-1 on serve over on court three - leaving Frenchman Pierre-Hugues Herbert in need of re-hydration, wouldn't fancy facing the South African fourth seed's serve myself...
Watson broken againpublished at 11:21 British Summer Time 1 July 2019
*McNally 2-1 Watson
With British Fed Cup captain Anne Keothavong among the crowd on Court 12, Heather Watson now trails 2-1.
Three games in this match and no player has held their serve so far. A very strange start to Wimbledon for both players.
No spare seats in the (Court 12) housepublished at 11:20 British Summer Time 1 July 2019
Sonia Oxley
BBC Sport at WimbledonCourt 12 is packed out for home hope Heather Watson’s match. Anyone with a ground pass can head in here - and they all have.
And after she has broken back against Caty McNally, they all like what they are seeing.
Image source, BBC Sport'Her experience should bring her through'published at 11:18 British Summer Time 1 July 2019
McNally 1-1 Watson*
Jo Durie
Former British number one on BBC TVThat's exactly what Heather Watson wanted.
Get running, get rid of some of those nervous. She's just going to have to make a lot of balls and her experience should bring her through this match.
'Team Ivankovic'published at 11:18 British Summer Time 1 July 2019
Djokovic v Kohlschreiber (13:00 BST)
Jonathan Jurejko
BBC Sport at Wimbledon
Image source, BBC SportThere is a new face in Team Djokovic. But it is one you will all recognise.
It's Goran Ivanisevic! The 2001 champion has joined the world number one's team, working alongside his main coach Marian Vajda in SW19.
Both men kept a close eye on the top seed as he practised with Russian 10th seed Karen Khachanov on a sun-soaked court five, which is one of the outside courts in the shadow of Centre's famous ivy-clad exterior.
Image source, BBC SportWatson breaks back immediatelypublished at 11:17 British Summer Time 1 July 2019
McNally 1-1 Watson*
That's better. British number two Heather Watson, broken in game one, breaks back in game two. She held three break points before an unforced error on the forehand from the American means we are all square again.
Coming up...published at 11:15 British Summer Time 1 July 2019
Eighth seed Elina Svitolina is the highest-placed seed kicking things off in the women's draw, facing Australia's Daria Gavrilova on court 18.
American 17th seed Madison Keys plays Thailand's Luksika Kumkhum, while compatriot Sofia Kenin faces Australia's Astra Sharma.
There are plenty of big names out later in the women's draw, with world number two Naomi Osaka, third seed Karolina Pliskova, 2018 Grand Slam winners Simona Halep and Caroline Wozniaki and five-time champion Venus Williams getting their Wimbledon bids under way.