Eng 152-3published at 18.2 overs
Four for England. They come in byes, but they won't care.
Amy Jones looks to paddle sweep, but it goes over her right shoulder and past Alyssa Healy.
Australia chase down 170 for loss of just one wicket
McGrath follows up 3-26 with ball by smashing unbeaten 91 off 49
Wyatt's 70 off 54 balls lays foundations for England's 169-4
McGrath takes two wickets in an over - Wyatt & Sciver (32 off 23)
Beaumont & Wyatt put on quickfire 82 for first wicket
Australia won toss, bowl first
Hosts leave out Perry
First T20, Adelaide - Australia go 2-0 up in points-based series
Callum Matthews
Four for England. They come in byes, but they won't care.
Amy Jones looks to paddle sweep, but it goes over her right shoulder and past Alyssa Healy.
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Knight 4, Jones 2
A good over for Australia with Alana King conceding just five.
She finishes with 1-28 on debut.
England skipper Heather Knight keeps out the final ball of the over.
It is Knight and wicketkeeper Amy Jones in the middle for England now, by the way.
England have plenty of batting and power left, but how much will those two wickets affect things?
Kristen Beams
Ex-Australia leg-spinner on BBC Test Match Special
Tahlia McGrath has just swung this innings all around.
Wyatt b McGrath 70 (Eng 142-3)
And again! The game has turned on its head.
Brilliant, brilliant bowling from Tahlia McGrath. Again it is right up in the blockhole and Danni Wyatt can't keep it out. McGrath has dismissed both of the set batters.
A brilliant 70 for Wyatt, off 54 balls with six fours and three sixes.
#bbccricket
Jack Rule: Whenever I hear them say “In comes McGrath” I still get shivers down my spine.
Kristen Beams
Ex-Australia leg-spinner on BBC Test Match Special
That's very good bowling from Tahlia McGrath. She kept it as simple as putting it in the blockhole.
Sciver b McGrath 32 (Eng 141-2)
Bowled her! Big wicket.
Tahlia McGrath goes full, right up in the blockhole, and Nat Sciver can't dig it out. An excellent delivery.
That is McGrath's first T20 international wicket too.
Kristen Beams
Ex-Australia leg-spinner on BBC Test Match Special
There's always a fair bit of noise from Alyssa Healy...
Four more. Australia just can't the stop runs flowing at the moment.
Nat Sciver pre-meditates and ramps over short fine leg for four more.
Alyssa Healy is chirping in her ear about any total being chaseable on this wicket.
Kristen Beams
Ex-Australia leg-spinner on BBC Test Match Special
It's getting sloppy by Australia in the outfield. That's the pressure England are putting them under, from the boundaries to the running between the wickets.
Nat Sciver picks up two more through mid-wicket, before another mis-field, this time by Megan Schutt at deep square leg, sees her add a couple more.
That is 16 from the 16th and all of a sudden England will have 180 in their sights.
Henry Moeran
BBC Test Match Special
That is a classy shot from Nat Sciver.
Oh, wow. Maybe the shot of the day.
Nat Sciver moves outside leg stump and pulverises a drive through the covers for another boundary.
So good.
Nat Sciver picks up a couple over the covers, before a mis-field by Ashleigh Gardner sees her pick up two through mid-wicket too.
The pressure is telling on Australia.
Kristen Beams
Ex-Australia leg-spinner on BBC Test Match Special
Based on the way England are batting, I think they'll be eyeing near the 175-mark. If they can get around there it will put a lot of pressure on Australia in the powerplay.
Garbage.
Nicola Carey sends a long hop down the leg-side and Nat Sciver flicks it over short fine leg for four more.
Sciver is starting to find her gears.
Australia coach Matthew Mott, speaking to BT Sport: "It's been a tough start, they have batted well. We have missed our lengths a bit and not nailed it and they have taken full toll. Anything under 160 is chaseable."
Henry Moeran
BBC Test Match Special
England are set for a big total.