Live Coverage: Australian Open - Day Four

Hello, and welcome to Sports Mole's live coverage of day four of the Australian Open.

Have you all recovered from day three? It was some day, wasn't it?! At certain stages in each respective match, it looked possible that we could lose Maria Sharapova, Roger Federer and Rafael Nadal from the tournament, but like the champions that they are, they fought back in the face of adversity. Will Thursday's action be as eventful? Probably not, but there are some huge names taking to court throughout the day.

In just a few minutes, Venus Williams and Kei Nishikori will get their second-round matches underway before it's the turn of Venus's sister Serena and 2014 men's champion Stanislas Wawrinka. World number one Novak Djokovic completes the day session on Rod Laver Arena before we return for the night's offering, which will be headlined by Victoria Azarenka's expected slugfest with Caroline Wozniacki. What a day we could have on our hands!

Here are a couple of pictures of Serena Williams practicing ahead of her match with Vera Zvonareva. Zvonareva, a former world number two, is seemingly past her peak, but if she can reproduce some of the form that has taken her to Grand Slam finals in the past, we could have a competitive match.

.@serenawilliams preparing to take on #Zvonareva later today. How will our No.1 seed go? #ausopen pic.twitter.com/w443kSbpEk

— Australian Open (@AustralianOpen) January 21, 2015

We are only 10 minutes in and there have already been a couple of surprise breaks. Venus Williams and Kei Nishikori have slipped behind to Lauren Davis and Ivan Dodig in their respective contests.

Blimey, Agnieszka Radwanska is in a rush. It has taken the Polish player just 23 minutes to wrap up a whitewash first set against Johanna Larsson on the Rod Laver Arena.

Over on the Margaret Court Arena, Venus Williams is back on serve against Lauren Davis but that match looks to have a chance of going the distance. At just 21 years of age, Davis is one of America's big hopes for the future and she can only benefit from sharing a court with Venus at a Grand Slam tournament.

Over on Court 2, John Isner has taken the first set against Andreas Haider-Maurer, but it's less comfortable for Kei Nishikori and Feliciano Lopez. They are both on the brink of falling a set behind to Ivan Dodig and Adrian Mannarino respectively.

RESULT! Well someone was in a rush. Sixth seed Agnieszka Radwanska is through to the third round after dismantling Johanna Larsson in just 44 minutes. The Polish hitter, a semi-finalist in 2014, dropped just one game during the one-sided encounter on the Rod Laver Arena. Click here to read a full report of the match.

The quick-fire win for Radwanska means that we will get to see Serena Williams much earlier than expected. Sports Mole will be providing full game-by-game updates of the match, which should get underway in about 10 minutes time.

Before that contest gets started, I shall bring you a quick update from around the courts. Kei Nishikori and Feliciano Lopez did indeed fall a set behind in their respective encounters with Ivan Dodig and Adrian Mannarino. However, it's better news for Venus Williams, who is a set up against Lauren Davis after winning eight of the last nine games. John Isner is still going well against Andreas Haider-Maurer, while Steve Johnson, conqueror of Brit Kyle Edmund, is a set up against 30th seed Santiago Giraldo.

If you want to keep in touch with the majority of matches in play right now, head over to our live scores page.

You probably know all there is to know about Serena so let's concentrate on Zvonareva for the remaining couple of minutes before the start of the match. The Russian, now 30 years of ages, is playing just her third tournament since Wimbledon of last year, which explains her current ranking of 203, but a quarter-final appearance in Shenzhen in the first week of the year suggested that she still has the ability that has seen her reach Grand Slam finals in the past. Anyway, the two players are ready on the Rod Laver Arena. Let's get this match underway on what is the hottest day of the tournament so far.

Zvonareva ends the first point of the match by hitting a backhand long of the baseline before two winners from the back of the court create three game points. The first is taken with an ace and Serena has laid down a marker straight away.

The Russian starts with a couple of solid first serves that earns 30-0 but Williams prevails when they exchange from the baseline. However, after an ace and a Williams error, it's Zvonareva's game and that's just the start that she needed.

BREAK! Williams is strutting around the Rod Laver Arena somewhat lackadaisical but her power is enough to take the opening two points. However, Zvonareva looks good here and she sends back-to-back winners past the American, who responds with a booming serve down the middle. Serena is having problems with the sun, and after netting twice in succession, Zvonareva has a break point, which she converts after a Williams double fault! First blood to the Russian.

BREAK! A double fault and backhand into the net suggests that Zvonareva is having the same issues with the sun that Serena did. A mistimed forehand from Williams sees the margin halved, but Williams has two break-back points after a routine winner. However, the American is playing some wild shots and two shots clear the baseline to hand Zvonareva deuce. Williams gets the break, though, after Zvonareva dumps a forehand wide of the target.

Normal order has been resumed. Williams powers into a 40-0 advantage with a blistering forehand down the line bringing up three game points. Zvonareva cleverly wrong-foots her opponent on the following point, but Williams hold convincingly. Over on the Margaret Court Arena, sister Venus has defeated Lauren Davis. A full report can be found here.

After the first two points are shared, Zvonareva puts together a well-worked point before converting a forehand winner inside the court. However, Serena is warming to the task now and a stunning forehand on the run helps the American to deuce. Williams gets to break point but with the ball sitting up invitingly in the middle of the court, she somehow blasts a backhand miles wide, which produces a shriek of disbelief from the American. Zvonareva eventually comes through, and she now has a chance to take advantage of Serena serving from the end being hindered by the sun.

BREAK! Zvonareva is working Serena about the court beautifully and a couple of mistakes from the American earns 15-30. She has an opening for a cross-court winner but she can't get enough on the ball but the Russian has break point after her opponent nets and it's converted when Williams repeats the error from the previous point.

Williams crushes a second-serve return down the line but Zvonareva levels the score with a neat backhand effort. The Russian then crushes a drive volley from the middle of the court before a big serve out wide forces Serena to net. However, the top seed begins to unload from the baseline to make deuce but Zvonareva holds on to force her opponent to serve to remain in the opening set.

Williams shakes her head in disbelief after dumping another forehand long of the baseline before Zvonareva moves to 15-30 after a clever backhand just over the net. The Russian's all-round game is superb and she brings up two set points after forcing Williams to net. They are both saved, though, as Serena smashes a couple of winners past her opponent but Zvonareva has a third chance, which is also saved by the world number one. Two aces in a row seal the hold and Zvonareva is going to have to try to serve it out.

BREAK! Serena has a look at a second serve on the first point but she can only find the net before she loses control of the following rally to give the Russian 30-0. The world number 203 has opportunities to bring up a fourth set point but three mistakes give Williams a chance to break back. This is a huge point, and the American takes it after a looping backhand forces the unforced error.

Williams is yet to hold from this end, and she soon falls 0-15 behind after a weak first serve. However, her power off the ground gets the the world number one to 30-15 before an ace out wide secures two game points. A mistake from Zvonareva hands over the game and the Russian is going to need to improve to hold in the next game. She's won just one of the last nine points.

SET! Zvonareva comes out swinging but she is lucky to avoid falling 0-30 down after just finding the corner with a forehand. She's 15-30 down, though, after Serena middles a return and the American has two set points after powering the ball past her opponent from inside the court. The pair trade blows during the next rally but Zvonareva goes long to hand Williams the set.

After squandering three set points and a 30-0 lead in the 10th game, it's going to take some incredible mental strength from Zvonareva to come back from that setback. She's got the experience, but she must start this second set with a couple of holds.

The shackles are well and truly off now. Williams drills down a 127mph ace to earn three game points before converting a love hold with another winner.

BREAK! This is becoming a bit one-sided now. Zvonareva is still plugging away but she is struggling to find a response to the flat hitting of the world number one. The Russian saves a break point at 15-40 but a ruthless backhand winner from Serena seals the game.

Zvonareva is doing a serious amount of running and retrieving but it's bringing no rewards. The increase in temperature is seeing the ball boom off Serena's racquet and she's almost unplayable right now. A love hold and her sixth game in a row.

BREAK! This game is simply a must hold for Zvonareva but a double fault does nothing for her cause. Williams proves that she is human by hooking a backhand wide but she soon has two break points. Credit to Zvonareva - she saves them both - but Serena ups the ante to confirm the double breal.

Out of nowhere, Zvonareva gets to 0-30 on the Serena serve but her optimism is short-lived as the American hits her way to three successive points before eventually sealing the hold. Over on the Margaret Court Arena, Marius Copil has just hit a 150mph serve against Stanislas Wawrinka but it looks as though he is about to lose the first set on a tie-break.

MATCH! After her performance in this match, Zvonavera doesn't deserve to suffer a bagel second set but when Williams crushes a forehand return winner for 15-30, it looks ominous. The world number one then repeats the shot for two match points and Zvonareva drills a forehand wide on the next to exit the tournament.

For nine-and-a-half games in the first set, this match was as competitive as it gets and a real shock looked on when Zvonareva earned three set points. However, after they passed her by, Williams roared back with 10 successive games to book her place in the last 32. She will be hard to beat on this form.

Coming up in around 15 minutes time, we will have full game-by-game coverage of Novak Djokovic's meeting with Andrey Kuznetsov, but first, let's have a quick squint around Melbourne Park.

Over on the Hisense Arena, Kei Nishikori is involved in a back-and-forth clash with Ivan Dodig. The Japanese is two-sets-to-one ahead but he has just been forced to break Dodig's serve when the Croatian was two points away from taking the match into a decider. On Margaret Court Arena, Stanislas Wawrinka is a set to the good against Marius Copil but the Romanian is impressing against the defending champion.

12th seed Feliciano Lopez looked on course for a straight-sets defeat but after overturning a 4-0 deficit in the third set, he is now just three games away from levelling his match with Adrian Mannarino at two-sets all.

Ah, maybe there is an injury involved. Despite being 2-1 up in sets, Mannarino has retired from his game with Lopez at 4-0 down in the fourth set.

Anyway, let's get back to the upcoming match between Djokovic and Kuznetsov. The world number one took a while to get going in his opening tie with Aljaz Bedene but by the start of the second set, his full artillery was on display and he had far too much for the Slovenian. It should be a similar story against Kuznetsov, but the Russian is far better than his world ranking of 88 suggests.

The 23-year-old has only ever reached the second round in Melbourne, but he has reached the third round - a career best - at his last two Grand Slam appearances at Wimbledon and the US Open. Enough of the buildup though, the two players are ready to start on the Rod Laver Arena.

Djokivic kicks off with a hold to love and it's already evident the size of the task that Kuznetsov has today.

The world number one looks incredibly sharp but his run of six successive points ends when floating a forehand long of the baseline. However, Kuznetsov looks despondent after netting a routine backhand to gift his opponent two break points and although he saves the first, an error from the Russian gifts Djokovic the early advantage.

We've been playing for barely 10 minutes and there's already a rhythm to Djokovic's game, especially behind his serve. Kuznetsov gets to 40-30 but the top seed holds with confidence.

A picture that requires few words...

Rod Laver Arena looking picture perfect on Day 4 of the #ausopen... pic.twitter.com/QimW9BTRh7 — Australian Open (@AustralianOpen) January 22, 2015

BREAK! This is brutal stuff from Djokovic so far. A couple of powerfully-struck returns bring up two break points and a forehand error from Kuznetsov allows the double break to be sealed in next to no time.

Djokovic moves to 40-15 before wrongly stopping play to challenge a call, handing Kuznetsov a glimmer of a chance. The world number one then nets to help the Russian to deuce but the outsider isn't quick enough when approaching the net and after reaching game point, Djokovic prevails.

SET! Djokovic puffs out his cheeks after blasting a forehand winner down the line after correctly picking the direction of a smash. However, Kuznetsov is keen to avoid the bagel and a nice one-two off his serve earns a couple of game points. They both go begging though, and Djokovic has set point after yet another mistake from the world number 88. The ball-striking of the former Australian Open winner is incredible and it sees him seal the set. Kuznetsov won a total of 11 points in those six games...

Kuznetsov shakes off the disappointment of losing that set with a thunderous return winner for 15-15 but Djokovic is going through the motions and he holds comfortably once more.

BREAK! Djokovic is gliding around the court but he misses a couple of opportunities to near another break and Kuznetsov capitalises on his let-off by bringing up two game points. Like in the sixth game, though, they go begging and after another game point is missed, Djokovic powers back to effectively break the spirit of his opponent.

Djokovic gets a ninth successive game on the board with a love hold and at the moment, the triple bagel isn't looking so unlikely. Kuznetsov has won just 17 points from nine games.

After the first two points are shared, Kuznetsov throws down a double fault before driving a forehand long of the baseline. However, after missing out on a second-serve return, Djokovic is hauled back to deuce after Kuznetsov opts for a serve-and-volley approach. The world number one misses a third break point and finally, after 43 minutes of play, Kuznetsov gets a game on the board, as well as a round of applause from the Rod Laver crowd.

Djokovic will be riled not to have secured a second bagel but his frustration is let out in a controlled manner as he registers yet another love hold with sixth ace.

BREAK! After crushing a baseline winner, Djokovic moves to 0-30 after an unforced error from his opponent, and although the deficit is halved, it's two break points to Djokovic after the Russian nets. A wayward backhand from Kuznetsov concedes the game and Djokovic will now serve for the second set.

SET! Djokovic opens his shoulders to bludgeon a forehand down the line for three set points before powering down a meaty first serve for a two-set lead inside 51 minutes.

It's a near certainty that Djokovic will win this match but Kuznetsov finally finds some consistent success behind serve to set up three game points. However, Djokovic isn't conceding nothing and he fires back to deuce, much to the dismay of Kuznetsov. The Russian holds though, and he at least has something to try to build on in this set.

BREAK! Now then, a double fault from Djokovic follows a shot into the net and Kuznetsov has 0-30. That becomes 0-40 and three break points when he connects with a backhand down the line. Can he do it? Yes he can! A second double fault hands the Russian his first break of the match.

BREAK! The Russian needs to hold here to establish some authority on the set but Djokovic is back on his 'A' game and he prevails after a lengthy baseline rally for two break points. The first is taken when Kuznetsov goes long and straight away, we are back on serve.

Djokovic registers his eighth ace with a fine delivery down the middle for 30-0 before a couple of mistakes from the Russian help the world number one rack up another love hold.

BREAK! The wheels have come off the Kuznetsov bandwagon again and some ferocious hitting from Djokovic brings up three break points. The first is saved with a big serve out wide but a forehand error gifts the break to the Serbian.

More forehand winners. Another love hold. That's all there is to say about that game. Djokovic moves two away from the match.

Kuznetsov has a 30-0 advantage but during the next rally, he presents his opponent with the perfect chance to convert a forehand from inside the court. Djokovic gets to deuce, but the Russian is eager to make the scoreline more respectable and an ace down the middle seals his third game of the set.

Apart from the minor blip at the start of this set, this has been as good a serving performance as you are ever likely to see. Another love hold is in the book - I've lost count of how many he has recorded now - and Kuznetsov will serve to remain in the match.

Such is the confidence of Djokovic is that he effectively gave that game up as soon as Kuznetsov got to 30-0. The Russian holds to love but he must break the world number one to remain in the tournament.

MATCH! Kuznetsov nicks the first point after responding to the heavy hitting of the top seed, who replies with a dominant point that is finished with a routine volley. A serve out wide sets up a routine smash before two match points are created with a flat serve to the Russian's backhand. Djokovic wastes his first chance but a huge serve down the middle secures the win.

His level may have dropped towards the end of that encounter but that was mightily impressive from Djokovic. He recorded some impressive stats along the way too. He won 86% of points behind his first serve, 68% of points behind his second serve while winning 55% of receiving points. Like I said, impressive.

Djokovic will play either Fernando Verdasco or Go Soeda in the third round. That match will take place on Saturday.

You can a full report of Djokovic's dissection of Kuznetsov by clicking here. To take a look at results from earlier in the day, head on over to our Match Report section.

Defending champion Stanislas Wawrinka came through in straight sets against Marius Copil but after not having it his own way against the Romanian, the Swiss number two was relieved to get past the qualifier on Margaret Court Arena.

Novak Djokovic lost just five games on his way to victory over Andrey Kuznetsov earlier today, and understandably, the top seed was delighted with his level of performance in his first meeting with the world number 88.

RESULT! The seeds have been dominant today, until now. Gilles Muller has caused a shock in the second round by recording an impressive 7-6 1-6 7-5 6-1 victory over 13th seed Roberto Bautista-Agut.

RESULT! Gilles Simon has only ever reached one Grand Slam quarter-final, and the came at the Australian Open back in 2009. Can he repeat the trick this year? The 18th seed from Nice is through to the third round following a straight-sets triumph over Marcel Granollers.

Last year's US Open runner-up Kei Nishikori took longer than expected to see off the challenge of Ivan Dodig earlier today, but the Japanese star is confident that his best form is around the corner after he managed to reach the last 32.

RESULT! Fourth seed Petra Kvitova has made it through to the third round after a comfortable triumph over Mona Barthel. The two-time Wimbledon champion will play Madison Keys in the last 32. That should be a cracker!

After twice featuring during the afternoon session in Melbourne, British number one Andy Murray may have expected to play under the lights on Friday. However, the sixth seed's contest with Joao Sousa will take place at around 3pm, local time, with Rafael Nadal and Maria Sharapova being chosen to headline the second session.

RESULT! Ninth seed David Ferrer has made his way into the third round of the Australian Open after overcoming Ukrainian Sergey Stakhovsky in four sets. The Spaniard will now play Gilles Simon for a place in the last 16.

Ever since his breakthrough at Wimbledon last year, Nick Kyrgios has been regarded highly in Australia and his stock improved further when he defeated Ivo Karlovic yesterday. That has moved the 19-year-old a step closer to a possible showdown with Roger Federer in the last 16, but coach Todd Larkham has insisted that he is fully focused on his next contest against Miles Jaziri.

With the night session fast approaching, I suppose it's a good time for me to bring you up-to-date with what is coming up over the next few hours...

There is an Australian theme on Rod Laver as Lleyton Hewitt and Samantha Stosur attempt to prolong their participation in the tournament. Hewitt goes up against Germany's Benjamin Becker before Stosur follows against American Coco Vandeweghe.

However, much of the attention is likely to be on Margaret Court Arena where two-time winner Victoria Azarenka takes on eighth seed Caroline Wozniacki. It's a showdown that is fit to grace a final, but due to Azarenka's injury issues last year, she is unseeded in Melbourne this year, leaving her open to matches such as the one that awaits her this evening.

Following the conclusion of that encounter, Milos Raonic will go up against Donald Young in an all North American tie. Young has it all to do to stifle the Canadian's serve but if he can take the eighth seed into a couple of tie-breaks, who knows.

So what will be day four's night time thriller, after Rafael Nadal kept us all on the edge of our seats yesterday? We have some great contenders, not least on Hisense Arena where 17th seed Gael Monfils has levelled his match with Jerzy Janowicz at one-set all. Lleyton Hewitt is almost ready to start, while Caroline Wozniacki and Victoria Azarenka are warming up.

Tennis legend Martina Navratilova has come out in support of Heather Watson, who blamed her first-round defeat to Tsvetana Pironkova on "girl things". The former Grand Slam champion has said that periods can play a big role in the form of an athlete, and that Watson is not making an excuse. You can read what she says here.

On court, Victoria Azarenka has made a fantastic start against Caroline Wozniacki by racing into a 3-1 lead in the opening set. Lleyton Hewitt has taken the first set against Benjamin Becker, while Gael Monfils and Jerzy Janowicz look to be heading to a third-set tie-break.

Monfils has taken the third set against Janowicz 7-6 after some fine tennis. The Frenchman lost the opener, but he has has come back strongly and will be the favourite to progress from here. Lleyton Hewitt is rolling back the years on Rod Laver Arena, as he leads by a set and a break against Benjamin Becker.

Former Wimbledon champion Goran Ivanisevic believes that Andy Murray shouldn't have sacked Ivan Lendl last year. Murray's form has been patchy since his partnership with Lendle ended and Ivanisevic thinks that the pair were a "perfect match". Read what he says here.

What did I say about a late night thriller between Monfils and Janowicz? Those two could be going the distance, as an early break of serve in the fourth has handed Janowicz the early advantage...

Lleyton Hewitt is racing through his match with Benjamin Becker now. He's just claimed the second-set 6-1, and he seems destined for the third-round unless the German can mount an incredible come-back.

Advantage Azarenka! She has just taken the opening set against eighth seed Caroline Wozniacki, 6-4. Azarenka, a former champion in Australia, is unseeded this year after an injury-hit 2014 but she seems in fine form against her Danish opponent so far.

We are going the whole distance with Monfils and Janowicz, after the Pole continued to thunder down some huge serves. He's wrapped up the fourth-set 6-3, and they're now in a decider.

RESULT! Victoria Azarenka is through to the third round after she eased past Caroline Wozniacki 6-4 6-2. It was an impressive display from Azarenka, who never looked like she was in any real trouble. This result, and performance, has sent out a strong message to her rivals, who won't fancy meeting her any time soon.

RESULT! Another result has come through, as Jerzy Janowicz produced some brilliant tennis to edge out 17th seed Gael Monfils in five-sets. The big Pole prevailed 6-4 1-6 6-7 6-3 6-3 to make it through to the third round.

Lleyton Hewitt fans, I might owe you an apology later. I said Hewitt was easing his way into the third-round and his opponent, Benjamin Becker, would have to do something special to stop him. Well, it looks like that something special might just happen. Becker took the third-set 6-3 and already has a double-break in the fourth. Game on.

Eighth seed Milos Raonic is the last of the big shakers to play in the second-round. He's just started his clash with Donald Young, with the winner due to play either Lleyton Hewitt or Benjamin Becker in the next round. Becker is just a game away from taking that one to a deciding set.

Despite a brief come-back by Hewitt, Becker holds his nerve and claims the fourth-set 6-4. The German has the momentum, but Hewitt loves a fifth-set battle and he has the crowd on his side. Meanwhile, Milos Raonic has a break of serve in the opening set against Donald Young and leads 4-3.

Raonic's serve is on form as he takes the first-set 6-4 against Donald Young. The Canadian has dropped just one point on his serve so far, and he has hit a further 10 winners.

Rafael Nadal is due back on court tomorrow, after yesterday's gruelling victory over Tim Smyzczek. There has been some doubt over whether he will actually take to the court, but his doctor hopes that he will able to play Dudi Sela, despite saying this is "not the best scenario". You can read the full story here.

Jerzy Janowicz has put his five-set win over Gael Monfils down to his improved fitness levels. The Pole will face Felicano Lopez in the next round, with the pair currently in a deciding set

Rafael Nadal has, remarkably, been training today, ahead of his third-round match tomorrow. I don't think his opponent, Dudi Sela, can expect a Nadal withdrawal somehow.

RESULT! Lleyton Hewitt, after being two sets up, has bowed out in the second-round to Benjamin Becker. The German eventually eased through the final set to win 2-6 1-6 6-3 6-4 6-2 and he will play Milos Raonic or Donald Young in the next round.

It was as brave as ever from Hewitt but he couldn't quite make his perfect start last. For Becker, that is the first time he has ever come from two sets down to win.

Fear not Australia fans, next up is Sam Stosur, who has a good chance of making it through tonight against Coco Vandeweghe. Meanwhile, Milos Raonic has taken a two set lead over Donald Young, as he won the second set 7-6.

RESULT! Easy as you like for Milos Raonic, who completes a 6-4 7-6 6-3 win over Donald Young. His serving was as impeccable as ever, and he now moves on to Benjamin Becker in the next round.

David Ferrer, who beat Sergiy Stakhovsky earlier today, says that his third-round clash with Gilles Simon will be "tough". The ninth seed wasn't at his best today, and he will need to play considerably better if he is going to make it into the second week. You can read what he said here.

There is only one match left tonight, and it's not going the way Australian fans would like. 20th seed Sam Stosur is 5-3 down against American Coco Vandeweghe, and she is in real danger of losing the first set.

Are Australia going to lose their two biggest stars in the space of a few hours? The shock is most definitely on, as Sam Stosur drops the first set 6-4 to Coco Vandeweghe.

One of the biggest matches of the tournament so far saw Victoria Azarenka beat Caroline Wozniacki in straight sets. The Dane has not seen success in Melbourne recently and thinks she may have a "curse"... You can read what she says here.

Sam Stosur is in real trouble here. She lost the first set 6-4 to the inspired Coco Vandeweghe, and she is now a break down in the second. Vandeweghe is playing very well, and Stosur doesn't have an answer to her right now.

RESULT! Brilliant performance from Coco Vandeweghe, who has knocked out 20th seed Sam Stosur 6-4 6-4. Stosur didn't play badly, but it has been a bad evening for Australian tennis after Lleyton Hewitt lost earlier on. Vandeweghe will move on to play Madison Brengle next.

It's been a dramatic day again in Melbourne, but one man who had no real concerns is Milos Raonic. The Canadian was in fine form against Donald Young, and he said that he's hoping to reach new limits this year. You can read what he said here.

After a positive start to the tournament, it has all gone downhill for Australia today. First, Lleyton Hewitt fell to Benjamin Becker before Sam Stosur was upset by Coco Vandeweghe. But, there is still some hope for the home nation as Nick Kyrgios is still left. He's in the same section of the draw as Roger Federer, but he's not thinking about a potential meeting just yet. Read what his coach has said here.

Stosur's defeat brings an end to the live action on day four. The likes of Roger Federer, Rafael Nadal, Maria Sharapova and, of course, Andy Murray are all playing tomorrow, along with Aussie Nick Kyrgios. Make sure you join us from midnight for live updates of all the major matches and stories on day five. Until then, thank you for joining me today. Goodbye.