Fifty for Mandhanapublished at 17 balls left
Smriti Mandhana is taking Freya Davies to task, targeting the leg side with back-to-back boundaries. That brings up her half-century.
Use the audio icon at the top of the page to listen to BBC 5 Sports Extra commentary
Hayley Matthews defends eight off final set as Fire beat Brave by four runs
Brave 162-3: Mandhana 71* (42), Wyatt 67 (37); Griffiths 2-26
Fire 165-3: Matthews 65 (38), Elwiss 28 (20), Beaumont 26 (17)
Fire's total is the second-highest in The Hundred women's competition
Brave win toss and bowl
Southern Brave beat Trent Rockets in their opening game
Welsh Fire's match against Manchester Originals was washed out
Timothy Abraham
Smriti Mandhana is taking Freya Davies to task, targeting the leg side with back-to-back boundaries. That brings up her half-century.
Here's how Danni Wyatt perished a little earlier - but not before she had made a crucial 67.
Alex Hartley rattles through a set of five, with Smriti Mandhana striking her final ball over long-on for four.
Thea Brookes
Former Birmingham Phoenix all-rounder on BBC Radio
Welsh Fire have to get Smriti Mandhana out if they are going to win.
They probably need a cluster of wickets too. Brave have a lot of batting in Freya Kemp, Georgia Adams and Maitlin Brown.
WinViz has swung back in Fire's favour!
It's 53-47% to them now.
That Smriti Mandhana boundary changed it by 7%.
It's close.
Bouchier st Bryce b Griffiths 9 (Brave 124-2)
Gone.
Maia Bouchier fails to make contact and her back foot does not come back down in time as Sarah Bryce breaks the stumps.
A brilliant bit of glovework by Sarah Bryce off the bowling of Alex Griffiths might have given Welsh Fire a second wicket here as Maia Bouchier might have not get her foot back behind the line.
Smriti Mandhana skies a slog sweep over mid-wicket but the ball thuds into the turf.
WinViz is now 57-43 in Southern Brave's favour.
Their game to lose?
Back-to-back boundaries for Smriti Mandhana as she punishes Hayley Matthews.
The pick of them is a one-bounce four straight down the ground after shuffling down the pitch to get to the pitch of the ball.
Southern Brave look well placed to take this down to the wire.
Here's how Danni Wyatt reached her half-century - she's made four of them in her career in the Hundred.
Alex Hartley tosses one up but Maia Bouchier uses her feet to get to the pitch of the ball and chips it over the top of extra cover for four.
Eight of that set of five from the left-arm spinner.
Maia Bouchier is the new batter. Brave need 68 runs off 40 balls.
Michael Carberry
Ex-England batter on BBC Radio
You always felt like Danni Wyatt would play by the sword and die with the sword with the way she was playing.
You don't want to waste good form but she'll be happy with her contribution.
It is now for Smriti Mandhana to see Brave home.
Wyatt c Matthews b Griffiths 67 (Brave 96-1)
A brilliant knock by Danni Wyatt off 37 balls.
She lifts another one from Alex Griffiths high into the leg side but is unable to quite get the distance on it this time.
Hayley Matthews manages to get round and pouch a fine catch.
Tammy Beaumont shuffles her pack and Shabnim Ismail is called upon to stymie the run rate. Danni Wyatt looks in irresistible form at the moment, though, as he unfurls her full repertoire of shots.
First Wyatt does well to get under a full, yorker-length, ball from Ismail and biffs it down the ground.
Next ball Wyatt uses the pace and lifts it over the wicketkeeper off the face of the bat.
WinViz is 54-46 in Fire's favour.
It may not be long before it is in Brave's.
The diminutive Danni Wyatt brings up her half-century with a huge hit.
Freya Davies slips down leg side and Wyatt rocks back on her heels and hauls it over the leg-side boundary for six.
Brave are going along nicely here.
Michael Carberry
Ex-England batter on BBC Radio
I'm not happy with these fields. It's just playing into the strength of Danni Wyatt.
Danni Wyatt is looking to go big to virtually every ball now.
She whips Alex Griffiths towards deep mid-wicket but some superb relay fielding from Welsh Fire in the deep prevents the boundary.