Wawrinka beats Djokovic to reach last eight
Wawrinka wins 2-6 6-4 6-2 3-6 9-7
Rain briefly stopped play at 5-5 in final set
Djokovic has won last three Australian Opens
Berdych beats Ferrer in four sets to reach semis
Live coverage on BBC Radio 5 live sports extra
*Denotes next server
Djokovic unable to kill off his opponent at the net but, luckily for the Serb, Wawrinka is unable to take full advantage of Djokovic's tame volleying. At 30-30 no-one knows which way this game will swing. We soon find out, however. Djokovic, off balance, scoops a forehand long to present Wawrinka with a break point. The Swiss takes his chance. Djokovic's backhand bounces beyond the baseline. My, oh my.
A sixth ace of the match from Wawrinka allows him to eke a 30-15 lead and the Swiss is in control. Another thunderous winner flies from Wawrinka's strings - his 22nd winner of the match (Djokovic has made 12) - and it's a comfortable hold.
Will Djokovic respond like a man who has woken up from an afternoon slumber to discover someone has eaten his last chocolate digestive? Sort of. Fierce hitting from the Serb who is eager to pin his rival to the baseline but from 40-0 he's hauled to 40-30 - an uncharacteristic error at the net giving Wawrinka hope. A sturdy first serve out to the wings, though, Wawrinka's reply sails long.
Jeremy Bates
Former British number one on BBC Radio 5 live sports extra
"Winning that set was just rewards for Wawrinka who was much more ambitious, fearless and at times untouchable. He has been dominating the baseline rallies and overpowering Djokovic at times with flashing groundstrokes."
Adelugba Taiwo: , externalWawrinka is just getting better and better. He doesn't want to give up so easily. He's been just stupendous.
Wawrinka slaps a backhand into the tape and Djokovic can be seen giving himself a pep talk as he walks across the baseline to face another Wawrinka bullet. But from 15-15 to 40-15 we go as two thumping first serves earns the eighth seed two set points. The Rod Laver arena now jam-packed and the crowd in full voice. They're watching a humdinger unfold. Djokovic netting a return and the steely-eyed Swiss returns to his chair having restored parity.
Djokovic, a four-time winner of this competition, is not a man who simply gives up on a set because his opponent is in the ascendancy and oozing confidence. The Serb has oodles of self belief and makes serving seem as easy as ABC. A hold to love. Over to you, Stan.
The Djokovic defence, which was made of titanium during the early stages of this match, now as reliable as a chocolate flake. Once again the pair attempt to knock each other out from the baseline but Djokovic wilts, netting a forehand to end a 29-shot slug fest (the longest rally of the match). Oh la la! Another beautiful clean winner down the line from Wawrinka even has Djokovic tapping his racquet in admiration and even though Djokovic hauls Wawrinka to deuce, the Swiss is not rattled. He launches an ace to consolidate his advantage.
Piers Newbery
BBC Sport at Melbourne Park
Image source, ReutersWhile Wawrinka was roaring after finally securing the break, Djokovic was looking over at his box. Coach Boris Becker was keeping up the positivity, nodding and clapping his charge, but we are into unfamiliar territory for the new relationship as, for the first time, the world number two is under pressure. All of a sudden it is Swiss fans nearby making the noise. Well, one very large, very noisy Swiss fan.
Jeremy Bates
Former British number one on BBC Radio 5 live sports extra
"That was an impossible backhand from Wawrinka. He threw all caution to the wind and went for it. There was so much racquet head speed there was nothing Djokovic could do. Djokovic looked around at his box with a look of total disgust at losing his service game but Wawrinka gets his reward for taking a chance."
The crowd rooting for Wawrinka, loudly cheering for the Swiss as his forehand winner whizzes down the line. The Wawrinka forehand again gets the better of Djokovic for 30-30. Djokovic won't be manouvered into a cul de sac from here, though, will he? Erm. The Serb spoons a forehand wide and it's break point! The pair trade blows from the baseline... gasps from the crowd during a seemingly never ending rally... and the spectators explode, ear-splitting cheers all around as a crunching Wawrinka backhand flies down the line.
Image source, APA howitzer of a first serve from Wawrinka, but Djokovic responds with a crackerjack of a return which grazes the baseline for a 0-30 lead. Two successive aces is just the tonic the Swiss needed, though, and a classy forehand into the corner allows Wawrinka to celebrate the hold with a clench of the fist.
Piers Newbery
BBC Sport at Melbourne Park
"A few hours ago it was 'Genie's Army' bellowing their support around Rod Laver Arena as Eugenie Bouchard reached the last four, now all the noise is for Novak. Defiantly ignoring my suggestion that you can't win a Grand Slam wearing beige, Djokovic continues to look peerless on this court as heads for a 26th straight win at the Australian Open. Last year's battle with Wawrinka finished at 1.41am - it's hard to see us still being here in five hours."
Boris Becker is caught looking on from the sidelines, his chin being supported by his hand. Were it not for the black hoodie the German is sporting, he would look like a wise professor. Becker looks like a contented man, though, and why wouldn't he. His man dominating without needing to be at his best. A hold to love and the Serb nudges ahead once more.
A booming serve followed by a thumping volley eases the Wawrinka nerves at 30-15 and the Swiss's serve has improved, with Djokovic left looking like a malfunctioning windmill on the baseline. A regulation hold for the Swiss and that will be of some comfort to his fans.
Jeremy Bates
Former British number one on BBC Radio 5 live sports extra
"Djokovic was in a hole but he is on this tremendous winning run and is able to ramp up his concentration just a fraction on the big points. A break there might have helped Wawrinka get into this match. We've heard these screams of motivation from Wawrinka trying to get himself going. He has enormous power but is a little bit flat at the moment."
Oof! Djokovic's feet dancing to a different tune as he spoons a forehand by some distance beyond the baseline for 0-30. The Serb goes long again and Wawrinka has three break points [reader adds own exclamation marks].
Stiff resistance from Djokovic who serves nervelessly to force the game to deuce. A baseline battle ensues, Wawrinka spanking a backhand into the tramlines. The Swiss perhaps still thinking about what could have been, although he then pulls Djokovic from left to right before unleashing a venomous forehand winner. That forehand proving not to be so trusty a friend, however, as Wawrinka twice goes wide to allow Djokovic to wrap things up.
Djokovic returning with aplomb and counter-punching with some heavy hitting from the baseline. Wawrinka responds positively, dragging himself to 30-30 before throwing up an ace. The Swiss then dazzles with a backhand winner down the line to stop the rot.
Image source, APDjokovic, of course, lost the first set to this opponent at last year's Australian Open. Indeed, he was 5-2 down in the second set before dipping into his seemingly endless reserves of energy to come back from the brink. Wawrinka a shadow of the player who played brilliantly in that match, although at 30-30 he has an opportunity to pressurise Djokovic.
The Serb, however, ups the ante, steps in and forces Wawrinka onto his heels. The Swiss seems stuck on the baseline and he fails to negotiate the barrier, gifting Djokovic a hold.
Jeremy Bates
Former British number one on BBC Radio 5 live sports extra
"Wawrinka has not settled into this match. He's pulling the trigger a little bit too soon and not quite timing the ball, particularly on his forehand side, but that was a very impressive set from Djokovic."