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*Sinner 7-6 (9-7) 2-4 Medvedev
Todd Woodbridge
Former Wimbledon doubles champion on BBC TV
If you look at Sinner’s body language he’s gone internal, Ever since that slide a few games back, I don’t think like he has looked the same.
*Sinner 7-6 (9-7) 2-4 Medvedev
A rapid service game to love for Daniil Medvedev.
The Russian might be a set down but he's certainly got all the momentum right now.
Srosh Khan
BBC Sport at Wimbledon
It’s absolutely hammering it down.
Fans are coming into the shop with sighs of relief once they’re underneath shelter.
There’s a lot of rain and staff are trying to mop up outside the shop.
Image source, BBC Sport
Image source, BBC SportHere's the moment earlier that Jannik Sinner won the first set.
Sinner edges first set against Medvedev
Sun 7-5 4-6 0-4 Vekic*
Martina Navratilova
Nine-time Wimbledon singles champion on BBC TV
I think it’s just emotional exhaustion, maybe physical as well [for Sun].
She has played so many matches in the tournament and it’s cumulative, the energy within a tournament. You don’t get rid of it until the tournament is over and it’s just caught up to her.
Sun 7-5 4-6 0-4 Vekic*
Donna Vekic won 15 points in a row to take control of this third set before Lulu Sun finally snapped that run.
But Vekic is in the mood now, attacking the Sun serve and when the Kiwi's forehand goes long, the Croat has another break of serve.
She is surely closing in on a first Grand Slam semi-final now...
Sinner 7-6 (9-7) 2-3 Medvedev*
Pat Cash
Former Wimbledon champion on BBC 5 Live and BBC Sounds
Daniil Medvedev's shots should be perfect for grass because they are hard and they are flat. He can move too so he should be a good grass court player.
Sinner 7-6 (9-7) 2-3 Medvedev*
A booming cross court forehand from Daniil Medvedev brings up a second deuce, before the Russian goes long with a forehand to give game point to Jannik Sinner.
The Italian obliges with a flat backhand down the line which Medvedev can't get back to hold.
*Sinner 7-6 (9-7) 1-3 Medvedev
I'd just noticed that Emily, Jannik Sinner did appear to be walking a little gingerly when he went to get balls from the ball boy and girls on that last point.
One to keep an eye on.
The Italian also has to change his racquet following a broken string, before a backhand into the net brings us to deuce.
*Sun 7-5 4-6 0-3 Vekic
Donna Vekic might have thought her chance was gone after three very costly double faults when serving for the second set.
But she regrouped and responded in the best way possible to break Lulu Sun and force a deciding set.
'What drama!' - Vekic takes second set against Sun
*Sun 7-5 4-6 0-3 Vekic
Image source, Getty ImagesToo good on serve from Donna Vekic.
She races to another hold to love and is in control of this third and final set.
What has Lulu Sun got left in the tank as she tries to turn this around?
Sun 7-5 4-6 0-2 Vekic*
Joe Rindl
BBC Sport at Wimbledon
And with that Lulu Sun double fault, I think this match will now quickly fall in Donna Vekic's favour.
Sun 7-5 4-6 0-2 Vekic*
Ashleigh Barty
Three-time Grand Slam champion on BBC TV
You can see the increased quality of Vekic's forehand since the second set has just allowed her to get inside the court and control more of the points and ultimately give her more success.
*Sinner 7-6 (9-7) 1-3 Medvedev
Emily Salley
BBC Sport at Wimbledon
Hmm, that's something to keep an eye on.
Jannik Sinner is walking a bit gingerly and he bends down to feel his left ankle. I wonder if he's carrying some kind of injury.
Sun 7-5 4-6 0-2 Vekic*
Donna Vekic has come out firing in this third set and a fierce forehand beats Lulu Sun to bring up three break points.
She only needs one as Sun double faults this time. The Croat has come from a set down, overcome a major blip serving for the second, and now leads by a break in the decider.
*Sinner 7-6 (9-7) 1-3 Medvedev
Daniil Medvedev with some good work on the first serve, holding to 15.
The Russian has won three games in a row now.
*Sun 7-5 4-6 0-1 Vekic
Troubles on serve? What troubles on serve?
It's back to business as usual for Donna Vekic to start the third set.
Sinner 7-6 (9-7) 1-2 Medvedev*
Todd Woodbridge
Former Wimbledon doubles champion on BBC TV
Medvedev does have the ability of changing his game up. He’s forced to because if he stays where he is, he’s not going to get this done.
Sinner 7-6 (9-7) 1-2 Medvedev*
Image source, EPAJannik Sinner puts a forehand down the line wide following a rally and Daniil Medvedev breaks!
That's just the start to the second set the Russian fifth seed needed.
*Sinner 7-6 (9-7) 1-1 Medvedev
A mistimed forehand gives Daniil Medvedev half a chance at 0-30. There hasn't been many of those in the match so far.
Can he make it count?
A forehand winner then gives the Russian two break points - the first of the match for either player.