Aus 35-0published at 4.2 overs
Oh dear. Kapp oversteps and gives Australia a free hit, and next ball Mooney swipes it over mid-on for four. The holders have found their groove.
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Matthew Henry
Oh dear. Kapp oversteps and gives Australia a free hit, and next ball Mooney swipes it over mid-on for four. The holders have found their groove.
A beautiful moment from earlier. A must-watch.
Whack! Kapp returns to the attack and Healy takes her on, launching one over the top for a one-bounce four. Healy looks in the zone.
Georgia Elwiss
England all-rounder on BBC Test Match Special
Australia are building a terrific foundation, it's been a tale of this tournament, the teams have started slowly and kept wickets in hand for the big hitters.
Healy 13, Mooney 10
Yep, a couple of chances and then a poor ball to finish from Khaka is flicked off Mooney's pads for four. Australia are building a platform.
Daniel Norcross
BBC Test Match Special
This is a very familiar Australia start.
Fourth over and a fourth bowler for South Arica as Ayabonga Khaka comes in and sees her first two deliveries go for just one run.
And oooooh! Next ball Khaka misses the off stump by a whisker as Mooney misses the ball charging down the pitch.
Daniel Norcross
BBC Test Match Special
What Australia do well is put away the bad ball for four.
Georgia Elwiss
England all-rounder on BBC Test Match Special
What a shot that is, pure timing from Beth Mooney. The length from Marizanne Kapp allowed Mooney to place it perfectly.
Mooney 5, Healy 11
And that's it released as Mooney drives one for four.
The outfield is so quick. Perfect batting conditions I reckon.
Three dots in a row as Mooney swings and misses. The pressure begins to build.
Ffion Wynne
BBC Sport in Cape Town
Just a few signs of nerves from South Africa early on - a wasted review, a wide, a fumble in the field...
It's understandable. They've never been in this position before, and the pressure of a home crowd that is going absolutely wild at everything, even Australia's runs.
Just for a moment South Africa think they have half a chance as a Beth Mooney drive bounces just before the fielding Laura Wolvaardt in the covers.
Georgia Elwiss
England all-rounder on BBC Test Match Special
You can tell there are some nerves out there in the South Africa side.
First real evidence of nerves from South Africa. That delivery was always missing the stumps.
Marizanne Kapp will bowl the next over.
Aus 12-0
Yep, impact is umpire's call and the ball is missing leg stump. An optimistic review from the home side.
Georgia Elwiss
England all-rounder on BBC Test Match Special
I think that's a lost review...
Ismail thinks she has Healy lbw. Umpire says no but South Africa review.
Daniel Norcross
BBC Test Match Special
I've seen one Australia shirt in the crowd and that's it.
Ffion Wynne
BBC Sport in Cape Town
That welcome for Shabnim Ismail! Incredible.
I can't wait to see what happens when there is an actual wicket.
But Australia will be desperate to silence them, they're not bothered about sentimentality. It's been a very business-like approach from the defending champions so far.