Image source, Getty Images

Not a bad start at all from Sri Lanka as Harshitha sweeps Gardner round the corner for an early boundary.

The spinner responds well though, upping the pace and firing in two dots. Good battle.

And we start with a forward defence from Harshitha Samarawickrama.

Georgia Elwiss
England all-rounder on BBC Test Match Special

We are seeing spin doing most of the damage in this tournament.

Harshitha Samarawickrama and skipper Chamari Athapaththu will open for Sri Lanka.

Spinner Ash Gardner has ball in hand for Australia.

Image source, Getty Images

A proper clash this with two unbeaten teams. Still, Australia will be favourites you feel.

Image source, Getty Images

Just before we get going here's some quick news from elsewhere.

The Hundred men's and women's teams have announced which players they have retained for the 2023 competition.

Thirteen out of 18 England men's players on central contracts remain at their teams, including Test captain Ben Stokes with Northern Superchargers.

Smriti Mandhana,the most expensive player at the Women's Premier League auction, is retained by Southern Brave.

Nat Sciver-Brunt, the joint most-expensive overseas player in the WPL auction, will stay with Trent Rockets.

Read the full list of retentions here.

The players are out and now we're blasting out the anthems. A couple more minutes and then we'll be under way.

Last time out Sri Lanka made it two wins from two at the Women's T20 World Cup with a seven-wicket win against Bangladesh.

Sri Lanka, who shocked hosts South Africa on Friday, slipped to 25-3 in pursuit of 127 amid an inspired opening spell from 18-year-old Marufa Akter.

But Harshitha Madavi hit 69 not out and Nilakshi de Silva an unbeaten 41 to secure victory with 10 balls to spare.

On Tuesday, defending champions Australia took a big step to the semi-finals of the Women's T20 World Cup with an eight-wicket win over Bangladesh.

Chasing 108 in Gqeberha, they won with 10 balls to spare, with captain Meg Lanning hitting an unbeaten 48 after opener Alyssa Healy made 37.

Bangladesh made 107-7 with Nigar Sultana Joty scoring 57, while the returning Georgia Wareham claimed 3-20.

BBC Radio 5 Sports Extra

By the way, you can listen to ball-by-ball coverage of this match live on BBC Radio 5 live Sports Extra, or by clicking the play icon at the top of this page.

Enjoy!

If Sri Lanka beat Australia in Gqeberha, they are guaranteed to go through.

Australia play South Africa, meaning both sides cannot get to six points.

Chamari Athapaththu's then would then secure top spot with a win in their final match.

If Australia beat Sri Lanka, they will take a big step towards qualifying for the semi-finals, but will need to either win, tie or have a washout in their final match to be sure and guarantee top spot.

If that game finishes in a tie or is a no result, then both teams will qualify with a win in their final group match, with net run-rate deciding the group winner.

Sri Lanka: Samarawickrama, Athapaththu (c), Gunaratne, Sanjeewani (wk), De Silva, Shehani, Ranasinghe, Kanchana, Kumari, Ranaweera, Kulasuriya

Australia: Healy (wk), Mooney, Lanning (c), Gardner, Perry, Harris, McGrath, Wareham, King, Schutt, Brown

Sri Lanka captain Chamari Athapaththu: "I would definitely have batted first. I am confident with my batting line-up.

"We are working really well. Our preparation has been good. We focus on today and the positive skills and vibes in the team."

Image source, Getty Images

Australia captain Meg Lanning: "If we have a bowl it gives us a chance to put Sri Lanka under pressure early. It's a big game, they are playing good cricket but it's about playing our best cricket."

Heads the call from Australia captain Meg Lanning. She wins the toss and chooses to field.

Right let's not mess about. Time for some news from the toss...

Image source, Getty Images

Here we go.

Welcome to day six of the Women's T20 World Cup. Australia and Sri Lanka both have perfect records in the tournament so far. Something's got to give today.