Invincibles beat Originals by 94 runs to go level on points with leaders Superchargers
Australia paceman Johnson takes incredible three wickets for one run off 20 balls
Klaasen clubs 60 off 27 balls, smiting six sixes; Roy impresses with 42-ball 59
Jacks hammers 32 off 13 to get Oval off to fast start
Jamie Overton takes 2-21 for Originals
We'll be back tomorrow for more Hundred action as Birmingham Phoenix take on Welsh Fire at Edgbaston.
The women's game starts at 15:00 BST and the men's at 18:30.
We look forward to you joining us for the live text commentary, clips and radio from 14:45 BST.
For now, enjoy the best of today's action from all four games!
Oval Invincibles bowler Spencer Johnson on his Hundred debut: "Ridiculous, ridiculous. I can't believe it myself to be honest."
Could you see yourself being here?: "Definitely not, absolutely not, I guess I just keep riding that wave. I'm just pinching myself to get out there."
Where have you been?: "I've been around, I've had a bit of a tough run with injury but I've come out of the other side now, I'm loving it.
How long have you been here?: "I flew in on Monday morning, I was in Canada for a couple of weeks and the MLC before that in America. It would've been tough coming from Australia, it helped playing."
What has the journey been like?: "I guess I'm very lucky to have the support I do in South Australia, it did look pretty grim at times. I probably didn't feel like I'd ever get here, I'm very lucky to be here now."
Dreams of playing for Australia?: "Absolutely, watching The Ashes at home, I would've loved to be a part of it. Hopefully, one day down the track. That would be pretty cool.
20 balls, three wickets for just ONE run.
That was pretty special.
Oval Invincibles batter Will Jacks: "It's just amazing, as close to a perfect win as you could get. We knew scoring in the powerplay would be massive."
On the start: "I thought straight after the powerplay we had 51 which much have been the highest after three years."
Playing with freedom: "I was playing pretty freely. Coaching staff from The Hundred, any cricket at the moment I'm just playing with freedom. Some does it goes well others, it doesn't."
What's the plan now?: "A long bus trip tomorrow, a round of golf on Friday and then another whack on Saturday."
And it ended with some brilliance from a quick, left-arm Australia bowler with the surname Johnson.
Watch out...
It started with some pretty ruthless hitting from Heinrich Klaasen, who smashed 60 from 27 balls, and Jason Roy's 59, which set up Oval Invincibles' mammoth 186-5.
Klaasen hits a 'humongous' off Walter
Tymal Mills
England pace bowler on BBC Two
That is a thumping win for the Oval Invincibles.
Jamie Overton holes out for an entertaining 37 from 21 balls, and that ensures a crushing 94-run win for the Oval Invincibles!
Complete dominance.
Phil Tufnell
Former England spinner on BBC Test Match Special
That's really nice timing from Jamie Overton. He just lets the ball come through to him.
Jamie Overton is just giving it a whack, with three consecutive fours.
A few of them go up in the air but nowhere near the fielders.
He's on to 33 from just 17 balls.
Jamie Overton has had a very decent game in a losing cause.
He took 2-21 in Invincibles' massive score and now has 21 from just 13 balls.
Spencer Johnson, remember the name...
Well, Originals are out of the game but Jamie Overton is still going to have some fun.
He launches Nathan Sowter for back-to-back sixes!
Image source, Getty ImagesHe finishes an incredible spell of 20 balls, three wickets and conceding just one run.
ONE RUN!
Tymal Mills
England pace bowler on BBC Two
What a way to introduce yourself, he's only just landed here. How do you describe a performance like this?
Little b Johnson 0 (Originals 58-9)
Stumps out the ground again! What a spell.
Spencer Johnson is looking like a very useful signing.
Originals batters have had no answers.
Tymal Mills
England pace bowler on BBC Two
Image source, Getty ImagesJohnson has got remarkable figures, two wickets, one run, 15 balls. 14 dot balls is fantastic.
Something tells me we're going to be seeing quite a lot more of this Spencer Johnson...
Tymal Mills
England pace bowler on BBC Two
90mph from Spencer Johnson, straight through Tom Hartley. He looks like he is getting better and better.
Hartley b Johnson 0 (Originals 58-8)
Ooooh, play that!
A swinging yorker from Spencer Johnson rattles through Tom Hartley's defences.
A top order batter would do well to keep that out, in fairness.