Thiem will put his shoulder out if he swings any harder. He gives a backhand the full wind-up but it clips the net. He has another go moments later to much better success. 30-30.

I think this is what they call a chance...

Djokovic is being very generous today. Three or fours times now he has applauded Thiem for his shots.

The world number three has 42 winners to his name today. Impressive.

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Djokovic bats the balls back down to Thiem's end after a service game that's over in a matter of minutes.

Over to you, Domi.

Djokovic misses a forehand after giving Thiem a run around. He looks annoyed.

Thiem is having to dig deeper now than earlier in the match. Djokovic is getting more balls back in play.

Thiem keeps on swinging and it's still working. He heads for a well deserved breather ahead again.

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Neither player will want another tie-break to decide this deciding set after the up-and-down affair that sealed the second.

Both men look far more secure on serve than they did in that breaker, however.

Djokovic sends Thiem scrambling off camera with a serve out wide. The Serb levels.

Djokovic has that sarcastic grin on his face again with Thiem having found the line with a forehand. I think Djokovic thought the ball was going wide.

Thiem puffs his cheeks after winning the game. We've been going two hours now.

Djokovic rattles off a quick service game of his own. There's nothing between them at this start of this decider.

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This opening game is a real danger one for Thiem having suffered that blow in the breaker.

He looks to have put it right out his mind and races to a 40-0 lead with a forehand winner. Djokovic holds his arms out wide. He may just be annoyed Thiem is finding such good shots at a crucial time.

A backhand winner seals the game.

You just can't count Novak Djokovic out. Still, there was now big celebration. He just glared at his box and marched to his chair.

How will Thiem respond to missing out on four match points in that tie-break - two of which were on his own serve?

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We're going to a decider!

Djokovic saves match point with a forehand winner and then nudges in front again with a good serve.

Pressure back on Thiem with his opponent having a set point.

Oh that's better under pressure from Thiem. He takes a real tester of a high ball out of the air.

Match point again...

Tim Henman
Former British number one on BBC One

It's been such a clean performance on serve from both players and all of a sudden.... plenty of points going against serve.

Neither player can win a point on serve. Dominic Thiem misses out on a third match point. It was nervy, not the clean hitting we have been used to.

Thiem again with the big hitting!

A third match point and a second on the Austrian's serve.

Wide from Djokovic! You really don't see that very often. A big mistake from the Serb on a big point.

Set point saved by Thiem. Still, this topsy-turvy breaker continues.

What a turnaround. Djokovic with trademark return. Thiem loses both points on serve and now Djokovic has a set point.

Double fault! The second missed by a mile!

Djokovic nets with a volley! There was no enough on the approach shot.

Thiem now has a second match point and it's on his own serve.