Nadal fails to convert a pick-up at the base of the net - despite a Bolt-like sprint.

After a thumping rally, Cilic thinks he's cracked a forehand winner. It's gone way over the baseline though. What a mistake-a to make-a!

Set point Nadal.

Nadal starts his pre-serve routine and then decides he doesn't like something. It's a baby crying that's distracted the world nubmer one.

It doesn't distract Cilic, though, as he clobbers a forehand winner, before an outrageous return down the line from Nadal wrong-foots him.

Cilic misjudges a forehand swipe and it travels over the baseline. We're level again.

The Croat psyches himself up for this next point and the crowd are behind him. Nadal stretches all the way to his right and somehow retrieves the serve, and Cilic can't get on the end of it.

Wow.

Image source, Getty Images

That's a glorious passing shot from Cilic! Nadal comes up to the net but he can't get near a spinny backhand.

And now Cilic goes cross court with a forehand winner! He's got his nose in front.

Cilic, at 6ft 6ins, gets down low to try and plant a backhand over...it lands into the net.

He eventually gets off the mark, but only because of a Nadal error.

Rafa Nadal bounces the ball, and then cracks down a pacey serve that Cilic nets.

Image source, Getty Images

A hold to love for Cilic. Brutal.

Anyone for a tie-break?

A hold to 15 for Nadal.

Cilic to serve to stay in the set.

Jill Craybas
Former world number 39 on BBC Radio 5 live sports extra

That was impressive play from Cilic. Nadal's forehand down the line was unbelievable but Cilic anticipated it.

Nadal's got his hand on his head. He's overthrown the baseline to hand Cilic the advantage.

And then the big Croat comes flying into the net to volley over again.

Break point saved, set point saved. On we go...

So good. So, so good. Nadal slides a forehand over the net and it just evades a stretching Cilic. We're at 30-30.

On his weaker second serve, Cilic enters a rally and he hits just over the baseline, to hand Nadal a single break point. Cilic is out of challenges now, too.

After another blistering, exhilarating rally, Cilic volleys down and over. Break point saved.

Kelly Chuks Casper‏: I think that Cilic is going for his shots while Nadal has retreated. That's causing Nadal all sort of problems.

A tight game for Nadal but he snatches it. Oof, this is close.

Remember in the second set when Cilic had an argument with the chair umpire and then won four straight games? He's at it again.

This time he's not given a challenge opportunity for being too late with the shout-up. A few evil daggers and some sassy shade are thrown the umpire's way, before Cilic lands a huge ace to hold.

When your swing is too quick even for the shutters of a camera.

Image source, Reuters

Hannah Marie Hassall‏: Nadal and Cilic are having a scrappy one here, neither one is having the best game of their life.

Two break points saved. Nadal goes on to hold. That was a big effort from the Spaniard.

Image source, AFP

Crisis averted for the world number one. For now, anyway.

He volleys home to take away the break threat, Cilic then nets to hand his opponent the advantage before the net gets in the way again for Nadal.

Back to deuce for the fourth time.

Jill Craybas
Former world number 39 on BBC Radio 5 live sports extra

The dynamic has changed a little. Nadal has really retreated. At the start of the match Nadal was hugging the baseline. Now it's Cillic that is inside the baseline and Nadal is hanging back.

It's all gone a bit quiet with a couple of simple service games from both sides.

And then they pull out all the stops for a brilliant rally, which Nadal loses with a slap into the net.

Now this is tense - break point Cilic! But Nadal quickly pulls it back to deuce with a big serve.

Then he nets again...advantage Cilic and another break point.