Decent start this, it's certainly a good attendance too.
Walking around the ground earlier, there seemed to be a real buzz about the place, plenty of MCC members in too.
Invincibles 24-1
Canny stuff from Deandra Dottin, mixing up her pace and conceding just that four from her first set of five balls.
Invincibles 24-1
The Invincibles are certainly getting plenty of streaky runs here.
An inside edge from Alice Capsey flies just under the tumbling keeper Amara Carr and away for four.
Post update
Tymal Mills
England T20 bowler on BBC Radio 5 Live Sports Extra
I bowl bouncers if I see a batter walking towards me, that's always my default reaction.
But to see a 16-year-old playing at Lord's in her first big occasion, she's certainly not overawed by it.
Capsey is showing some terrific intent.
Invincibles 20-1
Good response from Naomi Dattani, keeping it tighter as Alice Capsey can only pick up two more with a chip shot.
The superb Deandra Dottin is about to enter the fray with the ball.
Invincibles 18-1
Naomi Dattani comes on and sends down a loose delivery that Alice Capsey - who is facing her first ball with all the action having been down the other end - wallops away for four.
Bad ball, put away brilliantly.
Post update
Tymal Mills
England T20 bowler on BBC Radio 5 Live Sports Extra
Bit of misfortune there for Freya Davies in that second set of five, she didn't really get what those deliveries deserved.
Some welcome boundaries there as well for the Invincibles after that difficult start.
Invincibles 14-1
Grace Gibbs throws the bat at it again. And edges it again. But this one runs away rapidly and that's four.
Freya Davies still causing problems but those are useful runs for the visitors.
Invincibles 10-1
Freya Davies bowls a couple of wides, adding to her run of deliveries.
Another edge runs towards the boundary but Susie Rowe puts in a fine dive to prevent a couple of runs.
Invincibles 7-1
Shot! Gibbs flicks her wrists crisply to whip the ball through the leg side to the boundary for four.
Post update
Tymal Mills
England T20 bowler on BBC Radio 5 Live Sports Extra
It's going to take all the teams a round of games to work out what their best formula is.
An early wicket will force you in to having to adapt your plans and just try different combinations at the top of the innings.
Invincibles 2-1
Brilliant first set of five from Freya Davies, getting the ball to swing and really testing the batters.
Grace Gibbs gets two via a streaky outside edge to get her team off the mark.
Will Davies get another five in a row?
Of course.
Post update
Tymal Mills
England T20 bowler on BBC Radio 5 Live Sports Extra
What a start! Just an inside edge from a full ball that was starting to swing away.
Big early wicket that for the London Spirit as a bit of rain starts to fall.
WICKET
Adams b Davies 0 (Invincibles 0-1)
Bang!n Slower ball from Freya Davies and it totally foxes Georgia Adams, who flicks it onto her own stumps and is bowled without scoring.
It was a low full toss really, but Adams completely mis-timed her shot.
Invincibles 0-0
Superb first ball by Freya Davies, full and swinging in, hitting the pads.
Big appeal for lbw but the umpire says no. And Heather Knight opts against a review - probably going on to miss the stumps.
Post update
London Spirit are taking up their positions on the outfield at Lord's.
And here come Oval Invincibles openers Georgia Adams and Alice Capsey.
Freya Davies will open the bowling.
Here we go...
Listen live
A reminder you can hear every ball of this opening match at Lord's on BBC Radio 5 Live Sports Extra.
It's available on DAB Digital Radio, by clicking or tapping the play button at the top of this page or on BBC Sounds.
Middlesex all-rounder on BBC Radio 5 Live Sports Extra
I really enjoyed bowling here.
I played on some wickets towards the edges of the square in the T20 Blast this season with some short boundaries, but I really enjoyed it.
The Lord's slope always comes into it and hopefully they'll be some spin too.
It's always a great place to bat, but I'm going to back the spinners to go well today.
Post update
Quickly before this game gets under way, a bit of news in the men's competition.
South African wicketkeeper-batter Dane Vilas has joined the Northern Superchargers at a temporary replacement for compatriot Faf du Plessis.
Batter Du Plessis will miss the next two matches because of concussion and Vilas is available for the Superchargers when they face Trent Rockets tomorrow.
Post update
Alison Mitchell
Commentator on BBC Radio 5 Live Sports Extra
There's no dress code or age limit required in the Lord's pavilion today.
That's a sign that things are very different indeed in The Hundred.
Live Reporting
Adam Williams, Ffion Wynne and Jack Skelton
All times stated are UK
Post update
Henry Moeran
Commentator on BBC Radio 5 Live Sports Extra
Decent start this, it's certainly a good attendance too.
Walking around the ground earlier, there seemed to be a real buzz about the place, plenty of MCC members in too.
Invincibles 24-1
Canny stuff from Deandra Dottin, mixing up her pace and conceding just that four from her first set of five balls.
Invincibles 24-1
The Invincibles are certainly getting plenty of streaky runs here.
An inside edge from Alice Capsey flies just under the tumbling keeper Amara Carr and away for four.
Post update
Tymal Mills
England T20 bowler on BBC Radio 5 Live Sports Extra
I bowl bouncers if I see a batter walking towards me, that's always my default reaction.
But to see a 16-year-old playing at Lord's in her first big occasion, she's certainly not overawed by it.
Capsey is showing some terrific intent.
Invincibles 20-1
Good response from Naomi Dattani, keeping it tighter as Alice Capsey can only pick up two more with a chip shot.
The superb Deandra Dottin is about to enter the fray with the ball.
Invincibles 18-1
Naomi Dattani comes on and sends down a loose delivery that Alice Capsey - who is facing her first ball with all the action having been down the other end - wallops away for four.
Bad ball, put away brilliantly.
Post update
Tymal Mills
England T20 bowler on BBC Radio 5 Live Sports Extra
Bit of misfortune there for Freya Davies in that second set of five, she didn't really get what those deliveries deserved.
Some welcome boundaries there as well for the Invincibles after that difficult start.
Invincibles 14-1
Grace Gibbs throws the bat at it again. And edges it again. But this one runs away rapidly and that's four.
Freya Davies still causing problems but those are useful runs for the visitors.
Invincibles 10-1
Freya Davies bowls a couple of wides, adding to her run of deliveries.
Another edge runs towards the boundary but Susie Rowe puts in a fine dive to prevent a couple of runs.
Invincibles 7-1
Shot! Gibbs flicks her wrists crisply to whip the ball through the leg side to the boundary for four.
Post update
Tymal Mills
England T20 bowler on BBC Radio 5 Live Sports Extra
It's going to take all the teams a round of games to work out what their best formula is.
An early wicket will force you in to having to adapt your plans and just try different combinations at the top of the innings.
Invincibles 2-1
Brilliant first set of five from Freya Davies, getting the ball to swing and really testing the batters.
Grace Gibbs gets two via a streaky outside edge to get her team off the mark.
Will Davies get another five in a row?
Of course.
Post update
Tymal Mills
England T20 bowler on BBC Radio 5 Live Sports Extra
What a start! Just an inside edge from a full ball that was starting to swing away.
Big early wicket that for the London Spirit as a bit of rain starts to fall.
WICKET
Adams b Davies 0 (Invincibles 0-1)
Bang!n Slower ball from Freya Davies and it totally foxes Georgia Adams, who flicks it onto her own stumps and is bowled without scoring.
It was a low full toss really, but Adams completely mis-timed her shot.
Invincibles 0-0
Superb first ball by Freya Davies, full and swinging in, hitting the pads.
Big appeal for lbw but the umpire says no. And Heather Knight opts against a review - probably going on to miss the stumps.
Post update
London Spirit are taking up their positions on the outfield at Lord's.
And here come Oval Invincibles openers Georgia Adams and Alice Capsey.
Freya Davies will open the bowling.
Here we go...
Listen live
A reminder you can hear every ball of this opening match at Lord's on BBC Radio 5 Live Sports Extra.
It's available on DAB Digital Radio, by clicking or tapping the play button at the top of this page or on BBC Sounds.
Post update
Chris Green
Middlesex all-rounder on BBC Radio 5 Live Sports Extra
I really enjoyed bowling here.
I played on some wickets towards the edges of the square in the T20 Blast this season with some short boundaries, but I really enjoyed it.
The Lord's slope always comes into it and hopefully they'll be some spin too.
It's always a great place to bat, but I'm going to back the spinners to go well today.
Post update
Quickly before this game gets under way, a bit of news in the men's competition.
South African wicketkeeper-batter Dane Vilas has joined the Northern Superchargers at a temporary replacement for compatriot Faf du Plessis.
Batter Du Plessis will miss the next two matches because of concussion and Vilas is available for the Superchargers when they face Trent Rockets tomorrow.
Post update
Alison Mitchell
Commentator on BBC Radio 5 Live Sports Extra
There's no dress code or age limit required in the Lord's pavilion today.
That's a sign that things are very different indeed in The Hundred.
Kids are allowed in there as well.