Superchargers have an array of spin options, including England World Cup winner Adil Rashid, who concedes just six runs from his first set.
James Vince is still there on 31 from 21 balls, but Brave need to step things up if they are to keep up with the run rate.
BreakingWelsh Fire win by three wickets
After one victory in 2022, Welsh Fire continue their unbeaten start.
Two wins and a washed out game in their opening three matches.
A defeat for defending champions Oval Invincibles in their first completed game.
Fire 80-7
Welsh Fire can't lose.
Alex Griffiths flicks over mid-wicket and picks up a couple.
One to win. 22 balls left.
Fire 77-7
Need four more
A single and the wicket from Sophia Smale's first five balls.
She's going to carry on.
WICKET
Davies c Scholfield b Smale 5 (Fire 76-7)
Great catch!
Left-arm spinner Sophia Smale is on for the first time today and she strikes first ball.
Freya Davies tries to cut away but Paige Scholfield dives forward in the covers and takes a superb low catch.
Surely not? Fire need five to win.
Fire 76-6
Need five more
Good running brings Sarah Bryce a couple more.
Five to win.
Fire 74-6
Need seven more
Oh no.
Freya Davies takes a single into the covers and a wild throw at the non-striker's end goes to the boundary.
The bowler wasn't backing up and neither were any fielders.
Poor cricket.
Brave 44-1
Target 202
Some neat and tidy bowling Callum Parkinson has tied Southern Brave down. He has conceded just 10 runs from his 15 balls so far.
The win predictor has Northern Superchargers at 90%.
Fire 69-6
Need 12 more
Lovely, solid forward defence from Freya Davies to keep out the hat-trick.
Marizanne Kapp finishes with 4-18 from her 20 balls. Unbelievable.
Post update
Right, a third hat-trick opportunity of the game.
Marizanne Kapp to Freya Davies.
Let's go.
WICKET
Windsor b Kapp 0 (Fire 69-6)
Two in two again!
Absolutely superb from Marizanne Kapp.
It's too quick for Emily Windsor and it hits her on the pad, before going onto the stumps.
WICKET
Elwiss lbw b Kapp 33 (Fire 69-5)
Brilliant review!
Loads of movement back in from Marizanne Kapp and the technology shows it would have gone on to hit the top of leg stump.
Lovely bowling from Kapp but a useful hand from Georgia Elwiss.
Invincibles review
Has Marizanne Kapp trapped Georgia Elwiss lbw?
The umpire says no but Kapp insists that they send it upstairs.
Brave 39-1
Target 202
Southern Brave are not going down without a fight. Skipper James Vince has smashed four fours from his first six balls to race on to 17.
167 runs still needed, though.
Post update
Laura Harris was out first ball earlier on.
It gave Oval Invincibles an opening but Georgia Elwiss and Sarah Bryce are guiding Fire close to victory.
Fire 65-4
Need 16 more
Another bowling change for Oval Invincibles as Eva Gray comes into the attack.
She offers a bit of width first up and Sarah Bryce is able to cut away to the boundary.
WinViz is now 98-2 in Fire's favour. Their game to lose.
Fire 59-4
Need 22 more
A huge pressure-relieving set.
Georgia Elwiss picks up a couple through backward point, before nudging round the corner for four.
Another boundary comes through point before taking a single down the ground.
She's up to 28 off 25. It could be a match-winning knock.
Brave 16-1
Target 202
Finn Allen is furious with himself. He clubs a six and four in the space off three balls, but the very next delivery he smashes the ball straight to David Wiese at mid-on.
Awful start for the hosts as they attempt to chase down 202.
Live Reporting
Callum Matthews and Tom Mallows
All times stated are UK
Brave 58-1
Superchargers have an array of spin options, including England World Cup winner Adil Rashid, who concedes just six runs from his first set.
James Vince is still there on 31 from 21 balls, but Brave need to step things up if they are to keep up with the run rate.
BreakingWelsh Fire win by three wickets
After one victory in 2022, Welsh Fire continue their unbeaten start.
Two wins and a washed out game in their opening three matches.
A defeat for defending champions Oval Invincibles in their first completed game.
Fire 80-7
Welsh Fire can't lose.
Alex Griffiths flicks over mid-wicket and picks up a couple.
One to win. 22 balls left.
Fire 77-7
Need four more
A single and the wicket from Sophia Smale's first five balls.
She's going to carry on.
WICKET
Davies c Scholfield b Smale 5 (Fire 76-7)
Great catch!
Left-arm spinner Sophia Smale is on for the first time today and she strikes first ball.
Freya Davies tries to cut away but Paige Scholfield dives forward in the covers and takes a superb low catch.
Surely not? Fire need five to win.
Fire 76-6
Need five more
Good running brings Sarah Bryce a couple more.
Five to win.
Fire 74-6
Need seven more
Oh no.
Freya Davies takes a single into the covers and a wild throw at the non-striker's end goes to the boundary.
The bowler wasn't backing up and neither were any fielders.
Poor cricket.
Brave 44-1
Target 202
Some neat and tidy bowling Callum Parkinson has tied Southern Brave down. He has conceded just 10 runs from his 15 balls so far.
The win predictor has Northern Superchargers at 90%.
Fire 69-6
Need 12 more
Lovely, solid forward defence from Freya Davies to keep out the hat-trick.
Marizanne Kapp finishes with 4-18 from her 20 balls. Unbelievable.
Post update
Right, a third hat-trick opportunity of the game.
Marizanne Kapp to Freya Davies.
Let's go.
WICKET
Windsor b Kapp 0 (Fire 69-6)
Two in two again!
Absolutely superb from Marizanne Kapp.
It's too quick for Emily Windsor and it hits her on the pad, before going onto the stumps.
WICKET
Elwiss lbw b Kapp 33 (Fire 69-5)
Brilliant review!
Loads of movement back in from Marizanne Kapp and the technology shows it would have gone on to hit the top of leg stump.
Lovely bowling from Kapp but a useful hand from Georgia Elwiss.
Invincibles review
Has Marizanne Kapp trapped Georgia Elwiss lbw?
The umpire says no but Kapp insists that they send it upstairs.
Brave 39-1
Target 202
Southern Brave are not going down without a fight. Skipper James Vince has smashed four fours from his first six balls to race on to 17.
167 runs still needed, though.
Post update
Laura Harris was out first ball earlier on.
It gave Oval Invincibles an opening but Georgia Elwiss and Sarah Bryce are guiding Fire close to victory.
Fire 65-4
Need 16 more
Another bowling change for Oval Invincibles as Eva Gray comes into the attack.
She offers a bit of width first up and Sarah Bryce is able to cut away to the boundary.
WinViz is now 98-2 in Fire's favour. Their game to lose.
Fire 59-4
Need 22 more
A huge pressure-relieving set.
Georgia Elwiss picks up a couple through backward point, before nudging round the corner for four.
Another boundary comes through point before taking a single down the ground.
She's up to 28 off 25. It could be a match-winning knock.
Brave 16-1
Target 202
Finn Allen is furious with himself. He clubs a six and four in the space off three balls, but the very next delivery he smashes the ball straight to David Wiese at mid-on.
Awful start for the hosts as they attempt to chase down 202.
Fire 48-4
Need 33 more
We're half way through the innings.
WinViz is 93-7 in Fire's favour.
That's high.
Fire 45-4
Need 36 more
Sarah Bryce blocks out the hat-trick ball.
Lovely, solid forward defence.