Deuce five.

No one can take this one.

Caroline Wozniacki steams in with a punchy serve, but Simona Halep challenges and gets it right - that was wide.

Halep responds with a fiery forehand for a fifth break point.

Image source, EPA

Pat Cash
Former Wimbledon champion on BBC Radio 5 live sports extra

Halep's box are on their feet after every point trying to urge her on.

Wozniacki rallies to save. Speed, depth... desire? The Dane finds it from somewhere.

But there goes Simona Halep again, punishing ground strokes and she has another break point.

Magnificent from Simona Halep.

She swoops in with a shoulder-height forehand winner to earn a third break point.

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

Halep has had a couple of opportunities and needs to get a bit more aggressive again.

Image source, eap

Great point. Another mammoth rally that sees Halep opt for the drop shot, but Wozniacki has the speed to reach it and flicks in a return.

The Dane meets Halep's response at the net with the 23rd shot of the point to take the advantage.

But she just can't see out this service game... Halep wraps a forehand winner down the line.

Deuce again.

The world number one can't muster the energy to lift a forehand above the net, but finds some strength on the next point to take control and then punish a short ball.

Deuce.

Caroline Rigby: Some seriously loud gulls flying about during this #AusOpen, external women's final.

Ferocious from Caroline Wozniacki, a snappy serve down the T and volley to follow.

Another huge serve follows and the Dane brings it back to deuce.

Two break points Halep as Wozniacki goes wide on the run.

Simona Halep looks leggy, but also she did in the second set having received some treatment from the doctor and came back to win it.

The Romanian is battling, and pops a backhand winner beyond Wozniacki to make it 15-30.

Wozniacki takes it.

A fiery forehand, and a huge "come on!" to boot.

Image source, AFP

Simona Halep is challenging after her crosscourt backhand drifts into the tramlines.

It's wide, and that's break point.

A big serve when she needed it, Halep cracks one to the Wozniacki forehand and the Dane's return drifts long.

That's brilliant from Wozniacki though - depth, width, troubling Halep and sending the Romanian long.

Another deuce.

Caroline Wozniacki seizes the opportunity to attack on a slow, sliced second serve from Simona Halep, gliding in towards the net for a volleyed winner.

Halep responds in similarly emphatic fashion, but another punchy return from the Dane brings it to deuce.

Well watched from Halep, plucking out a high, looping Wozniacki return, only to see it come back at her.

Halep slightly miscues her overhead volley, but it wrongfoots the Dane.

30-15.

Piers Newbery
BBC Sport at Melbourne Park

The players get a well-deserved 10-minute break and the chance to enjoy some air-con, but if you grabbed a chair in Garden Square, you're not going anywhere...

Image source, BBC Sport

Deuce.

Great footwork from Halep, pushing Wozniacki wide and then dancing around a short ball to take it on the forehand with devastating effect.

The Dane goes big off her next serve. That's advantage. And Wozniacki grinds out an important hold.

Simona Halep eyes up the space down the line, but miscues her forehand attempt and wraps one into the net.

Caroline Wozniacki follows up with a ferocious serve and even meaner backhand winner.

Halep goes long off the next point - 40-30.

Caroline Wozniacki pauses for a moment, and then cracks down the first serve of the final set.

It's framed by Simona Halep, but falls inside the baseline and after a brief exchange the Romanian takes the point.

Halep moves to 0-30, a solid start from the world number one.