Australian Open 2018: What you missed on day five - Rafael Nadal and Grigor Dimitrov triumph as the heat continues

Here is what you missed overnight on day five at the Australian Open...

Dimitrov march continues

Third-seed Grigor Dimitrov advanced to the fourth round, beating Andrey Rublev 6-3, 4-6, 6-4, 6-4 in the final match of the day session on Rod Laver Arena.

After beating qualifiers in his first two matches, Dimitrov had a more difficult time against 30th-seed Rublev. Serving for the match, Dimitrov faced a break point before advancing on his first match point, clinching it with a winner off a Rublev drop shot.

"These are the most important matches for me, when certain things are not working for me and I find a way," said Dimitrov. "He's a good player. He beat me at the US Open so I knew what to expect and what I had to do."

Dimitrov will next play Nick Kyrgios, who overcame 2008 finalist Jo-Wilfried Tsonga 7-6, 4-6, 7-6, 7-6.

Edmund keeps British hopes alive

Kyle Edmund's path to the quarter-finals looked a relatively simple one after knocking out Kevin Anderson in the opening round in Melbourne, but he had to dig deep to see off Nikoloz Basilashvili in brutally hot conditions on Friday.

Edmund showed tremendous levels of fitness and determination to recover from two sets to one down and beat his Georgian opponent 7-6, 3-6, 4-6, 6-0, 7-5.

The Yorkshireman suffered a lull after appearing in control at a set and a break up but a 20-minute Basilashvili service game early in the fourth set, where he finally broke, turned the match in Edmund's favour with a swirling wind making life difficult for both players.

“During the whole of that fifth set the finish line seemed so far away,” said Edmund afterwards. “Physically at the end it was very demanding. When he hit that ball in the net, I was so relieved, because he just kept slugging it and it kept going in. Finally he missed it.

“It's not easy. Towards the end the wind died down so there was no fresh air. It's not forgiving, you either get to the ball or you don't, you can't bluff it. It's tough but I knew it was tough for him too. If I'm hurting, he was going to be hurting. I just kept sticking with it. I knew if I just kept getting balls back, he wasn't going to like it.”

Edmund will face Andreas Seppi in the fourth round after the Italian overcame Ivo Karlovic and the Croatian's 52 aces to advance to the fourth round with a 6-3, 7-6, 6-7, 6-7, 9-7 win that spanned three hours, 51 minutes.

Easy does it for Rafa

Top-seed Rafael Nadal breezed into the fourth round at Melbourne Park, beating Damir Dzumhur 6-1, 6-3, 6-1. Nadal, who lost the 2017 final here to Roger Federer, is attempting to win the Australian Open for the second time - the first was in 2009 - and add to his 16 major titles, second only among men to Federer's 19.

The Spaniard will play Diego Schwartzman, who beat Alexandr Dolgopolov in four sets earlier on Friday.

Can't stand the heat

The spotlight was again on searing temperatures in Melbourne on Friday as temperatures pushed past 40C on Friday. The tournament's extreme heat policy sees stadium roofs closed and outdoor matches suspended when the ambient temperature exceeds 40C and the wet bulb globe temperature index reading exceeds 32.5C, but organisers said the brutal conditions did not meet the thresholds.

However, Alize Cornet said the policy could be endangering the safety of players after suffering dizzy spells during her third round match against Elise Mertens on Friday.

Cornet slumped to the court after serving during the second set of her 7-5, 6-4 defeat by Mertens at the Hisense Arena and needed a medical assessment before receiving an ice down.

"Playing at this time was probably the worst time of the day," she said. "I kind of felt that I could faint at any moment.

"I think it could be dangerous, but I think that the fact the doctor came on the court and took my blood pressure and she was looking if I was feeling good enough to keep playing the match... They are very careful about that.

"But still, you know, playing in this condition is of course very dangerous for the health of the player. The limit of not playing the match is really high, it's like it needs to be above 45 degrees and humidity.

"I think this limit should be a little lower because playing in this condition is not nice for anyone. The crowd was in the shade but for the player it's incredibly tough."

Vandeweghe pays the price

You may remember Coco Vandeweghe landing herself in trouble back on the opening day of the tournament when she received a code violation for refusing to get off her chair until she had been delivered a banana after the end of the first set in her match against Timea Babos.

Vandeweghe went on to lose that match 7-6, 6-2, but on Friday she was handed the biggest penalty of this year's Australian Open when she was fined AUS$10,000 (£5,760) for screaming an obscenity at Babos.

Vandeweghe said after the match that she was irritated by what she described as excessive celebrating by her Hungarian opponent during their match.

End of the teen dream

Fifteen-year-old Marta Kostyuk's run came to an end with a 6-2, 6-2 loss against fourth seed and fellow Ukrainian Elina Svitolina.

Kostyuk's success, coming through qualifying and reaching the third round, had been one of the stories of this week but she found Svitolina too strong and too experienced in her debut on Rod Laver Arena.

Kostyuk was given a wildcard into qualifying after winning the junior title 12 months ago and must now focus on working her way up the professional game from her current ranking of 521.

Asked how much she learned, Kostyuk said: "A lot. How much do you have to pay Svitolina to have a one-hour lesson? I got it for free.

"She's a great player, but what I learned is that you can play against everyone. I had the chances, but because I thought she is incredible, like she's a god, I cannot do anything against her, that's the problem."

Beyond the Baseline | Read Charlie Eccleshares three-part series on the unseen side of professional tennis

Celebrating in style

Thursday saw 2016 Australian Open champion Angelique Kerber celebrate her 30th birthday with a second-round win over Donna Vekic.

A day later, it was Petra Martic whose birthday went with a bang as she celebrated turning 27 with a 6-3, 3-6, 7-5 win over Luksika Kumkhum to advance to the fourth round at Melbourne Park.

Match of the day

The first match on Court Two saw a topsy-turvy affair between Kyle Edmund and Nikoloz Basilashvili, which saw the British No 2 battle through in five sets to win 7-6, 3-6, 4-6, 6-0, 7-5.

Upset of the day

Henri Kontinen and John Peers lifted the men's doubles title in Melbourne last year, but there will be no repeat success as the No 2 seeds were dumped out 6-4, 7-6 in the second round by Radu Albot and Chung Hyeon.

Quote of the day

"I’m young, it’s professional sport. It’s meant to hurt." Kyle Edmund makes light of the stifling hot temperatures on Friday.

Stat of the day

20 minutes - The fourth set of Kyle Edmund's match against NikolozBasilashvili lasted 36 minutes, with 20 of them in just one single game that featured 36 points and 15 deuces.

Shot of the day

Courtesy of Kyle Edmund:

Matches you don't want to miss tomorrow

There is a veritable feast on offer on Saturday in Melbourne.

The men's draw sees Roger Federer and Novak Djokovic take top billing against Richard Gasquet and Albert Ramos Vinolas respectively, while two potential future stars face off in Alexander Zverev and Chung Hyeon.

Angelique Kerber against Maria Sharapova is the best match on the women's side, with Ashleigh Barty v Naomi Osaka should also be very entertaining.