Right, we're off. Just to let you know that Murray leads quarter-final opponent Ferrer 12-6 in head-to-heads, so don't fret. In addition, Murray has won the last five. Bye.

Novak Djokovic (Serb) v Kei Nishikori (Jpn)

Roger Federer (Swi) v Tomas Berdych (Cze)

Gael Monfils (Fra) v Milos Raonic (Can)

David Ferrer (Spa) v Andy Murray (GB)

"The last few days have been very tough, with a lot of emotions and things going on in my head. It has been stressful but hopefully I'll be a bit more relaxed for my next match.

"Ferrer must be playing well to beat John Isner. He makes you work extremely hard, he's been at the top of the game for 10 years and he's very experienced."

Image source, AFP

To clarify, Murray will play The Spanish Wall, David Ferrer, in the quarter-finals after the eighth seed beat John Isner of the United States in three sets. In addition, Johanna Konta having won earlier on, this is the first time since 1977 that Britain have had players in the quarter-finals of a Grand Slam in both the men's and women's draw. 

Simon Cambers
Tennis journalist on BBC radio commentary

"Tomic played as we expected with some nice flashy shots but not the fortitude to beat Murray, who was in a very solid frame of mind. He was much more dominant and aggressive." 

Image source, Getty Images

Tomic with another inexplicable unforced error but he does send a wicked serve down the middle that Murray is only able to bunt into the base of the net.

Murray forces a mini-break before Tomic bests Murray in another feisty basline exchange...

Murray serving to stay in the set. Tomic speaks for millions around the world when he turns to the 'Fanatics', or perhaps it was 'Andy's Army', and says: "You guys need to find another song." Extraordinary scrambling from Murray from behind the baseline and the point eventually ends with an overrule after a forehand by the Scot is initially called out. Tomic steers a backhand return wide before Murray pulls out a big serve and puts away a forehand into the open court. we have a tie-breaker...

Image source, Reuters

Simon Cambers
Tennis journalist on BBC radio commentary

"Tomic is doing well to hang in there. That was a tough game and he had to produce some good shots under pressure to stay in it."

Image source, Getty Images

Lucky net cord for Tomic as he moves 30-0 ahead but the Aussie heaves a tired forehand long for 30-15. Murray weaving some magic with his sliced backhand, the ball pitching and spinning like a leg-break in cricket, and it's 30-30. Tomic goes long with a backhand for deuce... 

Murray nets with a forehand return after a good first serve by Tomic before the Aussie incorrectly challenges a Murray backhand that skims the line. Tomic with an ace, his ninth, but he follows that with another errant backhand. Murray with a magnificent cross-court backhand winner to nick the advantage, before Tomic digs deep to win another feisty baseline exchange. A wry smile from Tomic, another ace but he follows that with another unforced error...

Tomic with a backhand volley for another advantage and this time he converts, sending Murray out wide with a solid serve before putting away an easy volley. 

BBC Radio 5 Live Sports Extra

Jo Durie, who is working for TV at the Australian Open, on Johanna Konta matching her run to a Grand Slam quarter-final in 1984.

"I thought she had blown it but then she broke back and I knew she was going to do it. I am so excited.

"Hopefully she'll get this win out of her system. She must not think she should win but should focus on playing her game. I genuinely think she has a chance of making the semi-finals, so fingers crossed."

David Law
Radio 5 live sports extra commentator

"In my estimation Jo Durie is the happiest person apart from Johanna Konta in the whole of Melbourne. She watched every ball of Konta's match and was cheering her on alongside Annabel Croft."

Murray with another ace down the middle, that's 17 now, and Tomic nets with a backhand return as the Scot holds to love.

Image source, Getty Images

Second double-fault from Tomic but he outlasts Murray on the next point before Murray nets with an attempted drop-shot. Tomic finds the net with an attempted backhand pass for 30-30 before Murray tugs a backhand return long - brave second serve, that. Murray all over that backhand return, it left Tomic rooted, and he secures the game with a peach of a backhand pick-up.

Great point that, Murray pulling Tomic all over the court before pulling out a tremendous lob on the half-volley, which the Aussie is unable to run down. Murray down the middle with another ace, I have a funny feeling about this next game...

Tomic really giving Murray a punch-up now and that's another clever rally, finished off with a smash into the open court. Ace from Tomic - where have you been hiding, Bernard?

Image source, AP

A reminder that you can watch highlights of Andy Murray and Johanna Konta's matches on BBC Two from 13:00-14:00 GMT.

You can also catch them on desktop, tablets, mobiles and BBC Sport app.

It'll be worth it...

Tomic goes long with a couple of returns, and Murray appears to remind Tomic that he's serving with new, juicier balls. Make that three long returns, Murray holds to love...

All of a sudden we have an atmosphere on Rod Laver as Tomic races into a 40-0 lead. And the place goes wild after that tremendous rally, which Tomic finishes off to hold. I believe that's his fifth service hold in a row. It looked like Tomic almost lost hope, but that can be a spur of sorts.