Thrilling match ends in a tie with both sides scoring 138
Tom Curran, who hit an unbeaten 38, judged to have made his ground for two off final ball
Cox hits 51 for Invincibles
Fire opener Clarke brings up fifty off 38 balls and ends unbeaten on 69
Atkinson stars with three wickets for Invincibles
Tom Curran is convinced that David Willey has feathered a slower ball behind to Sam Billings. But after the umpire says no they decline the review.
Curran then bowls a beauty that fizzes past the outside edge of Willey's bat, before a fortunate top-edge brings a welcome four for Welsh Fire, who are struggling to get going at the moment.
We have a boundary now. Joe Clarke backs away and plays a nice, deft cut wide of the fielder at third man for four.
Lovely shot.
You don't get much time to rebuild in the Hundred, so Welsh Fire will be under pressure to step things up soon.
We have gone 16 balls without a boundary, with five runs coming off Sunil Narine's latest set.
Welsh Fire are pushing the ones and twos as they look to rebuild.
A hastily run single via an inside edge into Joe Clarke's foot brings up the Fire 50.
David Willey is the latest new batter to join Joe Clarke, who was been stuck at the other end watching the carnage unfold.
Willey gets off the mark with a single off Sam Curran. The start of a significant rebuilding job for Welsh Fire.
Phillips c T Curran b Atkinson 6 (Fire 43-4)
They are more than just stumbling now!
Glenn Phillips had hit a four the previous delivery but next ball he slices straight to Tom Curran at deep backward point.
Gus Atkinson has three wickets for just 12 runs from his 10 balls so far.
READ MORE: 'Atkinson is what England are looking for'
Abell c Billings b Atkinson 0 (Fire 37-3)
And another! Gus Atkinson's delivery is down leg but he gets a bit of extra bounce and Tom Abell can only glove the ball through to Sam Billings.
After a bright start Welsh Fire are stumbling a bit.
Eskinazi c Sowter b T Curran 1 (Fire 32-2)
Tom Curran strikes!
Stevie Eskinazi catches it sweetly the but can only pick out Nathan Sowter at deep square leg.
Sowter didn't have to move.
Stevie Eskinazi is the new batter to join Joe Clarke - but Clarke is lucky not to be run out as they attempt a risky single.
He wasn't even in the picture as Jordan Cox's throw came in and narrowly missed the stumps.
Wells c S Curran b Atkinson 12 (Fire 32-1)
In the air and out!
Luke Wells goes for one big hit too many and top-edges the ball high into the sky, with Sam Curran watching it all he way into his hands.
Great catch - in the crowd! Luke Wells has clubbed Sunil Narine over mid-wicket for six with his first ball of the match and it is taken by a fan four rows back in the stands.
Wells caught that so, so sweetly.
Joe Clarke hits the first boundary of the match, guiding a wide delivery from Sam Curran through backward point for four.
Curran offers some more width and Clarke takes full advantage, smashing the ball through the off side for a one-bounce four.
Great start for Welsh Fire!
The Oval Invincibles players stride out amid a blaze of smoke and fireworks at a gloriously sunny Oval.
Welsh Fire openers Joe Clarke and Luke Wells follow shortly after.
San Curran will open the bowling for Invincibles.
Here we go...
Image source, ECBJason Roy is likely to be crucial at the top of the order for Oval Invincibles.
Left-arm seamer David Payne and left-arm spinner Roelof van der Merwe have had considerable success against against Roy in the past in T20s.
Payne to Roy: 7 innings, 29 runs, 25 balls, 3 dismissals
Van der Merwe to Roy: 4 innings, 13 runs, 11 balls, 2 dismissals
Image source, Getty ImagesWelsh Fire have one the best pace bowling in The Hundred, if not the best.
They are the fastest pace bowling group going around in The Hundred, averaging 132 kmph (next best is 125 kmph).
Another reason for their success is their accuracy — they are targeting the stumps 21% of the time (next best is 15%).
Oval Invincibles: Will Jacks, Jason Roy, Jordan Cox, Heinrich Klaasen, Sam Curran Sam Billings (capt & wk), Tom Curran, Sunil Narine, Gus Atkinson, Zak Chappell, Nathan Sowter.
Welsh Fire: Joe Clarke (wk), Luke Wells, Stevie Eskinazi, Tom Abell (capt), Glenn Phillips, David Willey, Ben Green, Roelof van der Merwe, David Payne, Haris Rauf, Shaheen Afridi.
Welsh Fire skipper Tom Abell has won the toss and decides to have a bat first.
Teams coming right up...
After yesterday's rain we have had a largely sunny Sunday that has already brought three completed matches in the Hundred.
The final match of the day is from the Kia Oval a Welsh Fire face Oval Invincibles.
Let's do this!