Last GB singles hope Cameron Norrie wins 6-1 7-6 (7-3) 4-6 7-6 (7-5) against Emilio Nava
Norrie to face third seed Alexander Zverev in third round
Emma Raducanu loses 7-6 (7-3) 6-2 to Anastasia Potapova in second round
Carlos Alcaraz beats Yannick Hanfmann 7-6 (7-4) 6-3 6-2 as bid for career Grand Slam continues
British qualifier Arthur Fery beaten 7-6 (7-4) 6-1 6-3 by Tomas Martin Etcheverry
Norrie 6-1 3-5 Nava*
Image source, Getty ImagesThere's still life in this second set for Cameron Norrie.
That's what he will be believing anyway after holding his serve at 40-15 with a powerful forehand which Emilio Nava just could not return.
It's up to the American to serve out this second set now.
*Norrie 6-1 2-5 Nava
A close call for Emilio Nava as he finds himself break points down at 15-40.
But the American fights back with four points on the bounce to hold his serve, hitting an extremely powerful forehand winner to move 5-2 ahead in this second set.
Positive stuff for the Australian Open main draw debutant.
Norrie 6-1 2-4 Nava*
Image source, Getty ImagesAnother twist in this tale!
Emilio Nava posts an immediate reply with a break back.
Cameron Norrie nets a backhand return at 30-30 before hitting a forehand long at 40-30. It was out by the finest of margins, but nevertheless it was out.
Disappointing for the Brit.
*Norrie 6-1 2-3 Nava
Image source, ReutersUh oh.
Emilio Nava commits a double fault and hands his opponent the break.
Relief for Cameron Norrie, who now has the chance to level things up on his serve.
Norrie 6-1 1-3 Nava*
The wind is picking up on court seven - and it seems to be working in Cameron Norrie's favour.
The British number two has just opened up a break point opportunity.
Surely he can't pass this one up?
Norrie 6-1 1-3 Nava*
Cameron Norrie gets himself on the board in this second set, finally.
A good serving and hitting display from the Brit, who is trying to pin Emilio Nava to the back of the court.
Let's see if that puts the wind in his sails.
*Norrie 6-1 0-3 Nava
Image source, Getty ImagesThis is why we love tennis.
Cameron Norrie ended the first set winning 14 of 15 points. Now Emilio Nava has started this second set winning 11 of 13 points.
It's safe to say the American has drawn a line under his first-set performance.
Norrie 6-1 0-2 Nava*
Image source, Getty ImagesAnd he only needs one bite at the cherry to take a 2-0 lead in this second set! Clinical.
A complete turnaround for the Australian Open main draw debutant.
*Norrie 6-1 0-1 Nava
This is much better from Emilio Nava.
The American has completely cut out his unforced errors now - he is yet to make one in this second set - and he opens up his first break point chance of the match.
*Norrie 6-1 0-1 Nava
Daniel Kiernan
Former British tennis player on BBC Radio 5 Sports Extra 2
You often find in tennis that matches come down to 'mini-battles' - the game to make it 3-1 to Cameron Norrie, it lasted around 10 minutes, he broke Emilio Nava and it seemed to break his will and heart for the rest of the set.
I would fully expect Nava to come out firing but Norrie will have the same plan in the second.
*Norrie 6-1 1-0 Nava
Image source, Getty ImagesCan Emilio Nava regroup and reset here?
He takes a 1-0 lead in this second set with a sweetly-struck cross-court forehand winner at 40-0 up on his serve.
That's more like it.
Norrie 6-1 0-0 Nava*
Image source, ReutersCameron Norrie takes the first set in just 32 minutes.
The 26th seed is absolutely running away with it on court seven. He will be hoping for more of the same in the second set after being forced to five sets in his opening round match.
A very comfortable set in the end.
*Norrie 5-1 Nava
That's four games on the bounce for Cameron Norrie.
He breaks Emilio Nava, who is appearing in his first Australian Open main draw, once more.
This time it was a 0-40 break. Worrying times for the American, this first set is racing away from him.
Norrie 4-1 Nava*
Easy as you like for Cameron Norrie.
The Brit takes a service hold to love in lightning speed.
He takes a healthy 4-1 lead over Emilio Nava in this first set - the American is really struggling to land his backhands at the moment.
Definite food for thought for the world number 89.
*Norrie 3-1 Nava
Image source, ReutersCameron Norrie takes the break after forcing six break points!
An important early lead for the British number two, who is finding a lot of joy going cross-court into Emilio Nava's backhand at the moment.
The American did manage to fend off five break points before netting a weak backhand.
Daniel Kiernan is right, this match feels a bit cat and mousey.
Norrie 2-1 Nava*
Emilio Nava has just gifted Cameron Norrie a first break point in this match with a shanked forehand return.
The Brit cannot capitalise through as the American turns it up a notch and approaches the net to thump a forehand winner down the court.
We're now in a bit of a deuce tussle on court seven.
Norrie 2-1 Nava*
Daniel Kiernan
Former British tennis player on BBC Radio 5 Sports Extra 2
Image source, ReutersThey are just feeling each other out at the moment. Neither of them have come out with a fire in their belly, trying to get an early break and steamroll the match. It feels a bit cat and mousey.
I don't think either will be overly happy with how they've started, but there is a long way to go. I'm sure the level will start to rise at the business end of this set.
Norrie 2-1 Nava*
There are unforced errors flying around left, right and centre on court seven.
Cameron Norrie and Emilio Nava have made 11 mistakes between them in these first three games.
Nevertheless, the Brit gets another service hold after being forced to deuce with a netted backhand.
*Norrie 1-1 Nava
Daniel Kiernan
Former British tennis player on BBC Radio 5 Sports Extra 2
Both players had five-set matches in the first round - and Emilio Nava went the absolute distance with the tie-break in the fifth set.
I am expecting some long, gruelling rallies. How will they be able to handle the physicality as the match goes on?
*Norrie 1-1 Nava
Emilio Nava replies with a 40-30 service hold of his own.
Both players are just settling into this match and gauging each other's gameplans at the moment.
On another note, I'm a big fan of Cameron Norrie's Australian Open outfit this year. His clothes are even co-ordinated with his racquet! Lovely stuff.
