Game and fourth setpublished at 11:50 Greenwich Mean Time 23 January 2018
Nadal 6-3 3-6 7-6 (7-5) 2-6 Cilic*
Fourth set in the bag.
Get the snacks in. We're going for the full-on five setter!
Summary
Nadal retires injured in final set - Cilic wins 3-6 6-3 6-7 6-2 2-0
GB's Edmund beats Dimitrov 6-4 3-6 6-3 6-4 to reach semi-finals
Edmund in last four of a Grand Slam for first time - will play Nadal or Cilic
Wozniacki v Suarez Navarro to follow
Mertens stuns Svitolina 6-4 6-0 to reach last four
Game and fourth setpublished at 11:50 Greenwich Mean Time 23 January 2018
Set pointpublished at 11:50 Greenwich Mean Time 23 January 2018
Nadal 6-3 3-6 7-6 (7-5) 2-5 Cilic*
I just made a 'pewwwwwwww' sound - like they do in the cartooons - to help describe a Cilic forehand winner. It had so much whip and whistle on it.
We go to deuce and Nadal forces the ball wide to hand Cilic a set point.
Postpublished at 11:47 Greenwich Mean Time 23 January 2018
Sam Smith
Former British number one on BBC Radio 5 live sports extra at Melbourne ParkThis is the time for Cilic to apply pressure and break, so he can start serving in the fifth.
Postpublished at 11:45 Greenwich Mean Time 23 January 2018
David Law
Radio 5 live sports extra commentator at Melbourne ParkIt feels like Nadal is assessing how bad the injury is while he's playing the points.
Postpublished at 11:45 Greenwich Mean Time 23 January 2018
*Nadal 6-3 3-6 7-6 (7-5) 2-5 Cilic
Nadal pulls out the hotdog! Damn, that's good. But it doesn't beat Cilic who's ready and waiting at the net.
A 15th backhand winner down the line from the world number six makes it 40-15 and although he mucks up at the net to give Rafa a faint hope, Cilic powers a huge forehand winner cross-court to hold.
Image source, Getty ImagesThree break points savedpublished at 11:42 Greenwich Mean Time 23 January 2018
Nadal 6-3 3-6 7-6 (7-5) 2-4 Cilic*
Both players are back out on court, and Cilic remains unfazed by the gap in play. He moves 0-30 up before bringing up three break points.
The first goes amiss when Cilic lands a forehand wide, and then Nadal overpowers him with a big serve.
Cilic tries to chase down a Nadal volley and although he makes it, he's wrong-footed by the Spaniard again.
Three break points gone, and Nadal goes on to hold. That is a terrifying response from the man who just needed a medical time out.
Postpublished at 11:37 Greenwich Mean Time 23 January 2018
Whilst Rafa gets a rub down, Cilic is doing some serious squats.
Bend and snap, Marin. Bend and snap.
Postpublished at 11:34 Greenwich Mean Time 23 January 2018
Now then, we're going to have a quick break in play.
Rafael Nadal's called the trainer out to look at something. He's taking some tablets for what appears to be a hip/thigh problem.
The world number one is now lying on the court and having an intense bit of physio to try and solve the issue.
Postpublished at 11:32 Greenwich Mean Time 23 January 2018
David Law
Radio 5 live sports extra commentator at Melbourne ParkCilic's backhand is delicious.
Image source, Getty ImagesPostpublished at 11:32 Greenwich Mean Time 23 January 2018
Sam Smith
Former British number one on BBC Radio 5 live sports extra at Melbourne ParkMarin Cilic isn't instinctive - he's dexterous. There's a little more shimmy about him these days.
Postpublished at 11:32 Greenwich Mean Time 23 January 2018
*Nadal 6-3 3-6 7-6 (7-5) 1-4 Cilic
Ridiculous from Cilic. His crowd-pleasing shot sends his partner wild in the players' box!
The big man dips down low to pick up an unlikely winner and he holds for a 4-1 lead in the fourth.
Strap yourselves in, we could be going all the way.
Cilic breakspublished at 11:29 Greenwich Mean Time 23 January 2018
Nadal 6-3 3-6 7-6 (7-5) 1-3 Cilic*
What. A. Rally.
After 23 shots, a tired-looking Cilic pokes a backhand into the partition.
He recovers to bring up a single break point.
HE'S GOT IT. Marin Cilic finds the line with a swinging forehand. He's a break up.
Postpublished at 11:22 Greenwich Mean Time 23 January 2018
*Nadal 6-3 3-6 7-6 (7-5) 1-2 Cilic
Nadal's got his head in his hands here after Cilic pops over another volley.
The hold follows.
Image source, Getty ImagesPostpublished at 11:21 Greenwich Mean Time 23 January 2018
*Nadal 6-3 3-6 7-6 (7-5) 1-1 Cilic
Marin Cilic isn't getting tired or bored of the big serves. He throws down another banger for 40-15.
Unfortunately for the Croat, he hits over the baseline on the next point and then slaps the net for deuce. A bit of a waste.
A gorgeous volley gives the world number six the advantage but then he double faults again. Back to deuce.
Postpublished at 11:18 Greenwich Mean Time 23 January 2018
This is the kind of tennis geekery I can get on board with.
Postpublished at 11:17 Greenwich Mean Time 23 January 2018
Sam Smith
Former British number one on BBC Radio 5 live sports extra at Melbourne ParkConditions out here favour Cilic. He's a flatter ball striker.
Postpublished at 11:17 Greenwich Mean Time 23 January 2018
Nadal 6-3 3-6 7-6 (7-5) 1-1 Cilic*
Marin Cilic has forgotten about the disappointment of that tie-break, and has commandeered a 0-30 lead on Nadal's serve.
Oh, no. Wait. The Spaniard has taken it back to 30-30.
Nadal goes on to hold. Game face on.
Postpublished at 11:13 Greenwich Mean Time 23 January 2018
Sam Smith
Former British number one on BBC Radio 5 live sports extra at Melbourne ParkI see no reason why Cilic can't take the next two sets. If he continues to serve well and return well - he's been returning brilliantly tonight.
Postpublished at 11:13 Greenwich Mean Time 23 January 2018
*Nadal 6-3 3-6 7-6 (7-5) 0-1 Cilic
Cilic gets off to a very confident start in the fourth.
A hold to 15 sets the world number six on his way.
Game and third set - Nadalpublished at 11:08 Greenwich Mean Time 23 January 2018
Nadal 6-3 3-6 7-6 (7-5) Cilic
Smash from Rafa Nadal, and there's a huge cheer and fist pump from the world number one!
Nadal's a set away from a place in the semi-finals.
Image source, Getty Images