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
Putintseva 7-6 (7-4) 4-2 Osaka*
Katie Falkingham
BBC Sport at Wimbledon
At the start of the sixth game of this set, Naomi Osaka cast a forlorn figure on Centre Court, she didn’t look happy at all with the way this was going.
Shouts of “come on Naomi” peppered the game between points, but it doesn’t seem to be helping. She looks lost out there.
Image source, Getty ImagesPutintseva 7-6 (7-4) 4-2 Osaka*
Tracy Austin
Two-time Grand Slam champion on BBC TV at Wimbledon
All sorts of credit to Putintseva continuing to keep these shots from Naomi Osaka alive.
Image source, EPAPutintseva 7-6 (7-4) 4-2 Osaka*
That missed volley at break point from Osaka could well be a pivotal moment in this match as Putintseva grabs that game and only needs two more for round two and the biggest upset of the day so far.
Putintseva 7-6 (7-4) 3-2 Osaka
Break of serve? Osaka is poised at the net for a crucial volleyed winner, but skews the shot, a rare failure at the net, and we're back to deuce.
But Osaka with an immediate chance of a break back.
Image source, Reuters*Putintseva 7-6 (7-4) 3-2 Osaka
Naomi Osaka is now in huge trouble and facing a day-one exit. She is broken and her body language is not looking good at all.
The decisive point went to Hawk-Eye, with it going against her as it was only just in on the side, much to Putintseva's delight. She dances off with the break and a 3-2 lead in the second.
Watch as sixth seed Alexander Zverev starts to lose his cool as he is broken to go two games down in the third set after sharing the opening two sets in his match with Jiri Vesely.
Zverev is now two sets to one down.
Putintseva 7-6 (7-4) 2-2 Osaka*
Osaka, the first Japanese player to ever top the female world rankings although she has now dropped to second, is just looking frustrated and unhappy. A backhand that goes long to give Putintseva another game does little to improve her mood.
Djokovic 6-3 7-5 6-3 Kohlschreiber
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Carla Suarez Navarro couldn't resist posing with this sign. She won't be the only one. The 30th seeded Spanish player starts tomorrow, with a tricky-looking tie against Samantha Stosur of Australia in round one.
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*Putintseva 7-6 (7-4) 1-2 Osaka
The Putintseva backhand slice is proving to be a formidable weapon.
Image source, .*Putintseva 7-6 (7-4) 1-2 Osaka
Naomi Osaka does just not look too happy out there. She holds her serve relatively comfortably, to 15, but no hint of any enjoyment at the moment.
Image source, ReutersPutintseva 7-6 (7-4) 1-1 Osaka*
Some great variety from Yulia Putintseva, who comes up with a lovely disguised backhand slice on her way to a hold.
*Putintseva 7-6 (7-4) 0-1 Osaka
Simon Reed
BBC Sport commentator at Wimbledon
That was delightful movement, and maybe that's the way forward for Naomi Osaka - forward is the way forward.
If she's doubting her ability to play shots from the back as she appears then that is the answer.
Image source, EPAAndy Murray has hinted that his rumoured mixed doubles partnership with Serena Williams at Wimbledon may well be on....
As he was leaving the practice court, Murray said: "I'm definitely playing (mixed doubles)."
He added that he was "90% sure" he knew who his partner would be. Asked whether it would be Serena Williams, he replied: "Possibly. I don't want to say too much just now until things are definitely confirmed."
Image source, Reuters*Putintseva 7-6 (7-4) 0-1 Osaka
She survives some nervy moments, but Naomi Osaka sees off the two break points to hold.
Putintseva 7-6 (7-4) 0-0 Osaka*
Osaka would love a comfortable hold to love in her opening service game of the second, but that's not what's happening. She has to save two break points immediately. Deuce.
Putintseva 7-6 (7-4) 0-0 Osaka*
Here are those first set stats. Twenty-one unforced errors and you have a glimpse as to why Naomi Osaka is a set behind.
Image source, .#bbctennis or text 81111 (UK only)
Finlay Donaldson: Zverev still nowhere near the level he needs to be mentally to compete over five sets, with his success coming almost exclusively over three. If you want to compete with the big three, show some bottle!
Jiri Vesely currently leads sixth-seed Alexander Zverev 4-6 6-3 3-0 on Court One.
Putintseva 7-6 (7-4) 0-0 Osaka
World number two Naomi Osaka is in trouble and loses the first set in her match against world number 39 Yulia Putintseva.
The Japanese player held a 3-1 game lead but goes on to lose it 7-4 in the tie-break.
Image source, Reuters