Welsh Fire host Birmingham Phoenix in the women's competition from 14:30 BST, while Manchester Originals men take on Trent Rockets at the same time here at Old Trafford.
Our live text gets under way at 14:15 BST and you can follow it right here.
'King was outstanding'
Trent Rockets captain Elyse Villani, speaking to Sky Sports: "We've got some really experienced bowlers in our line-up and that makes things easier as a captain.
"I really enjoyed being captain, I had a few days notice, but when you've got some really experienced girls bowling it's really great.
[On hat-trick hero Alana King] "She loves it, she's a character, that's what we want in the team. She has a plan and executes it perfectly. She was outstanding and she loved it.
"I said to her, you didn't get one for Australia in the Commonwealth Games, but you've got one here for the Rockets so all is well with the world."
'I hope Shane Warne is looking down'
Hat-trick hero Alana King, speaking to Sky Sports: "We have got our first win on the board and that's what I am pumped about.
"I am here to do a job for the team and I am glad to do it. It was a fresh wicket and I could manage to contribute."
"It's pretty special, but as I say I'm here to do my job for the team and I'm glad it came off today. I'm stoked to get the win.
"I hope Shane Warne is looking down and is pretty proud I spun it a bit today. I am very happy to have done well here."
Post update
Alana King's pitch map and bowling figures were a thing of beauty.
13 dots. Four wickets. And one stunning hat-trick.
Getty ImagesCopyright: Getty Images
Post update
Deep Dasgupta
Former India wicketkeeper on Test Match Special
Alana King is box office. She's so good, her line and length, variations, the control that she has and her reading of the game as well. Absolutely brilliant.
The first hat-trick in the women's Hundred. That's an achievement I'm sure she'll relish.
Post update
Stephan Shemilt
BBC Sport chief cricket writer at Old Trafford
That is the game over! A run out completes a victory for the Trent Rockets, who have steamrolled the Manchester Originals.
The way that wicket fell, perfectly sums up the way the Originals have gone about this chase.
BreakingTrent Rockets beat Manchester Originals by 43 runs
Finished with a runout.
The Originals call a silly single and Hannah Jones is out of the frame as Kathryn Bryce takes out the stumps.
What a win for the Rockets!
Originals 76-9
Need 44 runs to win
15 balls remain. The Originals need 44 runs to win. I'm putting it out there, they're not going to make it.
Post update
Stephan Shemilt
BBC Sport chief cricket writer at Old Trafford
It's a hiding to nothing for this last Originals pair.
Originals 73-9
Need 47 runs to win
Hannah Jones is in at 11. She starts with a single.
Post update
Deep Dasgupta
Former India wicketkeeper on Test Match Special
Soft dismissal. No elevation at all and straight to the fielder.
WICKET
Threlkeld c Brunt b Smith 7 (Originals 72-9)
Very nearly there.
Spin returns through Bryony Smith and tailender Eleanor Threlkeld goes on the attack, but only ends up spooning the ball straight to Katherine Brunt.
Originals 72-8
Need 48 runs to win
Katherine Brunt's set finishes without much drama.
The Rockets are cruising to a win in their opener.
Originals 68-8
Need 52 runs to win
Pace returns with Katherine Brunt handed the ball.
Originals batters Eleanor Threlkeld and Grace Potts will need to do something special to save this game for the hosts.
Post update
Scott Read
BBC Test Match Special commentator
Great catch. Alana King can do no wrong.
Post update
.Copyright: .
WICKET
Campbell c King b Glenn 13 (Originals 67-8)
Alana King can do know wrong!
Ami Campbell tries to accelerate but her slog to the legside is caught by King, diving in from the boundary rope.
The Rockets are cruising.
Post update
Deep Dasgupta
Former India wicketkeeper on Test Match Special
This is a warning sign for all the other teams in the competition playing the Rockets. They've got two quality spinners with King and Glenn bowling together.
Watch: Glenn takes catch of the tournament contender
Any other game and this catch from Sarah Glenn would have been the moment of the match.
Alana King's hat-trick though has completely overshadowed Glenn's stunner in the field.
Originals 63-7
Need 57 runs to win
Spinning is winning.
Bryony Smith beats Ami Campball but her delivery just misses the stumps and goes under the keeper's body for four.
Live Reporting
Josef Rindl and Sam Drury
All times stated are UK
Getty ImagesCopyright: Getty Images .Copyright: .
Latest PostWatch: King takes 'Magical hat-trick'
The Hundred games keep on coming by the way.
Welsh Fire host Birmingham Phoenix in the women's competition from 14:30 BST, while Manchester Originals men take on Trent Rockets at the same time here at Old Trafford.
Our live text gets under way at 14:15 BST and you can follow it right here.
'King was outstanding'
Trent Rockets captain Elyse Villani, speaking to Sky Sports: "We've got some really experienced bowlers in our line-up and that makes things easier as a captain.
"I really enjoyed being captain, I had a few days notice, but when you've got some really experienced girls bowling it's really great.
[On hat-trick hero Alana King] "She loves it, she's a character, that's what we want in the team. She has a plan and executes it perfectly. She was outstanding and she loved it.
"I said to her, you didn't get one for Australia in the Commonwealth Games, but you've got one here for the Rockets so all is well with the world."
'I hope Shane Warne is looking down'
Hat-trick hero Alana King, speaking to Sky Sports: "We have got our first win on the board and that's what I am pumped about.
"I am here to do a job for the team and I am glad to do it. It was a fresh wicket and I could manage to contribute."
"It's pretty special, but as I say I'm here to do my job for the team and I'm glad it came off today. I'm stoked to get the win.
"I hope Shane Warne is looking down and is pretty proud I spun it a bit today. I am very happy to have done well here."
Post update
Alana King's pitch map and bowling figures were a thing of beauty.
13 dots. Four wickets. And one stunning hat-trick.
Post update
Deep Dasgupta
Former India wicketkeeper on Test Match Special
Alana King is box office. She's so good, her line and length, variations, the control that she has and her reading of the game as well. Absolutely brilliant.
The first hat-trick in the women's Hundred. That's an achievement I'm sure she'll relish.
Post update
Stephan Shemilt
BBC Sport chief cricket writer at Old Trafford
That is the game over! A run out completes a victory for the Trent Rockets, who have steamrolled the Manchester Originals.
The way that wicket fell, perfectly sums up the way the Originals have gone about this chase.
BreakingTrent Rockets beat Manchester Originals by 43 runs
Finished with a runout.
The Originals call a silly single and Hannah Jones is out of the frame as Kathryn Bryce takes out the stumps.
What a win for the Rockets!
Originals 76-9
Need 44 runs to win
15 balls remain. The Originals need 44 runs to win. I'm putting it out there, they're not going to make it.
Post update
Stephan Shemilt
BBC Sport chief cricket writer at Old Trafford
It's a hiding to nothing for this last Originals pair.
Originals 73-9
Need 47 runs to win
Hannah Jones is in at 11. She starts with a single.
Post update
Deep Dasgupta
Former India wicketkeeper on Test Match Special
Soft dismissal. No elevation at all and straight to the fielder.
WICKET
Threlkeld c Brunt b Smith 7 (Originals 72-9)
Very nearly there.
Spin returns through Bryony Smith and tailender Eleanor Threlkeld goes on the attack, but only ends up spooning the ball straight to Katherine Brunt.
Originals 72-8
Need 48 runs to win
Katherine Brunt's set finishes without much drama.
The Rockets are cruising to a win in their opener.
Originals 68-8
Need 52 runs to win
Pace returns with Katherine Brunt handed the ball.
Originals batters Eleanor Threlkeld and Grace Potts will need to do something special to save this game for the hosts.
Post update
Scott Read
BBC Test Match Special commentator
Great catch. Alana King can do no wrong.
Post update
WICKET
Campbell c King b Glenn 13 (Originals 67-8)
Alana King can do know wrong!
Ami Campbell tries to accelerate but her slog to the legside is caught by King, diving in from the boundary rope.
The Rockets are cruising.
Post update
Deep Dasgupta
Former India wicketkeeper on Test Match Special
This is a warning sign for all the other teams in the competition playing the Rockets. They've got two quality spinners with King and Glenn bowling together.
Watch: Glenn takes catch of the tournament contender
Any other game and this catch from Sarah Glenn would have been the moment of the match.
Alana King's hat-trick though has completely overshadowed Glenn's stunner in the field.
Originals 63-7
Need 57 runs to win
Spinning is winning.
Bryony Smith beats Ami Campball but her delivery just misses the stumps and goes under the keeper's body for four.