Australian Open day two at Melbourne Park
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Johanna Konta retires from her match against Kaja Juvan while leading 6-4 0-2
Cameron Norrie beats fellow Briton Dan Evans 6-4 4-6 6-4 7-5
Britain's Francesca Jones loses 6-4 6-1 to Shelby Rogers
World number one Ashleigh Barty win 6-0 6-0 in 44 minutes in first Grand Slam match in more than a year
Rafael Nadal, Sofia Kenin, Daniil Medvedev & Stefanos Tsitsipas through but Victoria Azarenka is out
*Evans 4-6 6-4 4-6 5-3 Norrie
Cameron Norrie is clinging on in this set. Another chance to break back... another stinger of a serve from Dan Evans. Deuce number three.
Evans floats in a slice after an energy-sapping rally, but with the 20th shot of the exchange Norrie scampers on to it to guide a backhand beyond his fellow Brit.
Can he break back this time?
*Evans 4-6 6-4 4-6 5-3 Norrie
Dan Evans takes the net approach again, but Cameron Norrie is equal to it and the British number can't generate enough force to help his backhand volley over the tape.
Break back point for Norrie, but it's quickly wiped out by a meaty Evans serve. Deuce.
*Evans 4-6 6-4 4-6 5-3 Norrie
That is a sublime forehand winner down the line from Cameron Norrie when facing set point.
Deuce.
*Evans 4-6 6-4 4-6 5-3 Norrie
As the light fades in Melbourne, this one is hotting up. Cameron Norrie bustles back to 30-30, before Dan Evans bursts forward and earns set point with a combination of smart volleys.
This to level the match.
*Evans 4-6 6-4 4-6 5-3 Norrie
Norrie fizzes an Evans serve back with interest for 15-15, but Evans picks off his man at the net with a delightful cross-court slice that has Norrie flapping at thin air. 30-15.
Juvan 3-2 Konta*
There's been an early exchange of breaks over on court 15, with Johanna Konta getting her nose in front before being reeled back by Kaja Juvan.
*Evans 4-6 6-4 4-6 5-3 Norrie
Cameron Norrie goes long from behind the baseline and Dan Evans punches the air in delight, roaring to himself at taking the break. Now he can serve for the set.
Evans 4-6 6-4 4-6 4-3 Norrie*
Anne Keothavong
Former British number one on Tennis Breakfast
This is a rather loose game here from Cam Norrie.
Evans 4-6 6-4 4-6 4-3 Norrie*
And now, at 15-40, the British number one has two chances to break.
Big moment for Dan Evans...
Evans 4-6 6-4 4-6 4-3 Norrie*
Anne Keothavong
Former British number one on Tennis Breakfast
I genuinely do think Evans is going to be feeling this physically. The nerves and tension contribute to how he is feeling and this match has been intense. They are both desperate to win, know each other's games so well and there is so much on the line.
Evans 4-6 6-4 4-6 4-3 Norrie*
If Evans' legs are tiring, Norrie will be happy to keep giving him the run around on those long rallies. He gets Evans moving again and slams down an overhead volley to win the point, with his opponent almost crashing into the advertising hoardings. Evans is good for the next one though, 15-30.
Evans 4-6 6-4 4-6 4-3 Norrie*
Anne Keothavong
Former British number one on Tennis Breakfast
Evans is bashing his thighs more frequently with his racquet. He's feeling it in his legs.
Evans 4-6 6-4 4-6 4-3 Norrie*
A thunderous serve from Dan Evans to get over the line and hold. And a welcome sit down between the changes of ends...
*Evans 4-6 6-4 4-6 3-3 Norrie
Dan Evans rattles his way to 40-0, but Cam Norrie isn't going away and wins successive points before getting his opponent on the run, striding towards the net and forcing Evans to fire a backhand wide.
Deuce.
We've seen plenty of those, with these two on court for almost three hours now.
Well, Ash Barty's Australian Open campaign is very much up and running...
The top seed has completely flattened Danka Kovinic 6-0 6-0 in just 44 minutes. Kovinic won just 10 points all match. Ouch.
*Evans 4-6 6-4 4-6 3-3 Norrie
Sizzler of a second serve from Cam Norrie and Dan Evans jabs it long.
We're back on serve in the fourth set.
#bbctennis
Joel Newnham: Francesca is playing like there are way less than 188 ranking positions between her and Rogers.
Evans 4-6 6-4 4-6 3-2 Norrie*
Cameron Norrie takes control of another gruelling exchange - 19 shots, this one - before Dan Evans tries to shut him off with a dart to to the net, but the British number one catches the tape with his stabbed volley. 40-30.
Evans 4-6 6-4 4-6 3-2 Norrie*
Russell Fuller
BBC tennis correspondent on BBC Radio 5 Live Sports Extra
I think Grand Slams could be changed to best-of-three sets in the first week, best-of-five in the second week, for the men and the women.
The only parallel I could perhaps make is the World Snooker Championships where they play first-to 10 frames in the first week and then first-to-18 in the final.
The tennis players should be able to adjust. Although there are obviously physical differences between the two sports...
Evans 4-6 6-4 4-6 3-2 Norrie*
Evans scrambles across court but can only cup a forehand into the middle of the net.
Cameron Norrie breaks back in the fourth set.