Here's what De Kock's World Cup stats were like before today...

Image source, BBC Sport

South Africa resume their remorseless run chase as Malinga slings down a wideish delivery which Quinton de Kock crashes through cover point for four. The Slinger's response is a bouncer which De Kock ducks.

The new batsman, by the way, is Faf du Plessis. He's not faced a ball yet.

We're ready to resume. Lasith Malinga, marking out his run-up, has two deliveries left to finish the seventh over.

Michael Vaughan
Ex-England captain on BBC Test Match Special

On England's Test squad for the West Indies, set to be announced at 11:45 GMT:

"If they go with Adil Rashid, I hope England will have done their homework and spoken to Yorkshire captain Andrew Gale and coach Jason Gillespie about how to manage him best. He's a talented kid and I'd expect him to go on that trip. I hope they don't go for Tredwell in Test cricket as that would be a backward step - they'd better go for young Riley who took his place at Kent. And I think Mark Wood, the young quick bowler at Durham, will go."

If you are just joining us this morning, the first World Cup quarter-final has seen an unlikely hat-trick hero in South Africa's part-time off-spinner JP Duminy.

He took 3-29, and Imran Tahir 4-26 as Sri Lanka were bowled out for 133 in 37.2 overs, with only Kumar Sangakkara showing any resistance with an uncharacteristically ponderous 45 from 96 balls.

The Proteas are well on target for victory at 40-1 in the seventh over, with Quinton de Kock looking in good touch on 22 not out from 18 balls.

Michael Vaughan
Ex-England captain on BBC Test Match Special

"The tour to the Caribbean is an intriguing one - Alastair Cook's not scored a Test century for two years so he needs runs. He needs to put that to bed, England need to win some games and get the feel-good factor back. I'd expect the Windies will open the bowling with Jerome Taylor at one end, and someone like Marlon Samuels to target Cook's pads."

Listen to Test Match Special commentary via the audio icon.

Larry the Leprechaun: Sanga's great World Cup has been to Sri Lanka's detriment as they clearly didn't have enough middle wicket practice in the lead up to today.

Michael Vaughan
Ex-England captain on BBC Test Match Special

"I would go with Jonathan Trott in the Test squad - although it's a gamble. I think he's got some technical issues which he's had time to iron out, but from what I've heard from the Lions trip to South Africa, they did target him with the short ball and I heard he did OK. I'm sure the ECB have done all their research to make sure he's ready."

If you weren't with us earlier, Kevin Pietersen - making his TMS summarising debut - said he will "do anything" to regain his England place, and confirmed he wants to play county cricket this summer.

Read more on the BBC Sport website.

BBC Radio Test Match Special

India batsman Suresh Raina, on Thursday's quarter-final against Bangladesh in Melbourne: "We have done well in batting, bowling and fielding. We have three games to go but you cannot take Bangladesh lightly. We lost against them in the 2007 World Cup and in the Asia Cup. They know how to play one-day cricket from their experience of both the Indian and the Bangladesh Premier Leagues. We need to go there and express ourselves."

If you've not voted yet, we want to know who you think will win the World Cup on 29 March.

You can have your say by voting on the top right-hand side of the page or under the 'Vote' tab on mobile devices.

The vote will close at 09:00 GMT with results published here shortly after. Read the terms and conditions here.

Michael Vaughan
Ex-England captain on BBC Test Match Special

"De Kock looks in the mood tonight and it has been a good start by South Africa. The pitch looks good and he is timing the ball. He will have a bit of tea in the dressing-room, and then it won't take long for South Africa to knock off the remaining 80-odd runs to win the game."

Image source, Getty Images

TMS are now hearing from Bangladesh captain Mashrafe Mortaza, about their famous win over India at the 2007 World Cup.

BBC Radio Test Match Special

Sri Lanka sports psychologist Jeremy Snape, speaking to TMS about Kumar Sangakkara: "We talk about the time between balls, and not letting the last ball affect the way you think about the next one. But the teaching of that is different to doing it in practice, and doing it four times in a row. He is a craftsman, who can stay in the moment, focusing on the next ball and not on the consequence of the game. You see in his results the compound effect of that."

Image source, AFP

Prayags: It's great that matches are at work time for India. My wife still does not have the slightest whiff of the World Cup. Blissful married life.

BBC Radio Test Match Special

Sri Lanka sports psychologist Jeremy Snape, speaking to Test Match Special about run chases: "The psychology of run chases is fascinating. It should be simpler. You know exactly what you need to get,. The challenge is when you get closer to the result. It contaminates your thinking, and you think about losing wickets and losing the match, whereas four hours earlier, you are not thinking about the result. The best run chasers say that the game is longer than you think."

BBC Radio Test Match Special

Keep your ears pinned to Test Match Special during the interval - they're going to look ahead to the announcement (at 11:45 GMT today - just over four hours' time) of England's Test squad to tour West Indies. Rumours abound of a possible recall for Jonathan Trott - possibly as an opener. They'll also be looking ahead to tomorrow's India v Bangladesh game.

But first, they're speaking to former England one-day spinner Jeremy Snape, who's now working with the Sri Lanka squad in his new(ish) role as a sports psychologist.

JP Duminy, who took a hat-trick en route to figures of 3-29: "I've never got close to a hat-trick so I'm pretty pleased with that performance.

"There wasn't really a lot of purchase out there so it was mainly about keeping the runs down."

Image source, Getty Images

South Africa 40-1 (6.4 overs) - target 134

Batsman: De Kock 22*

Fall of wickets: 40-1 (Amla 16)

Bowling figures: Malinga 3.4-0-20-1, Dilshan 1-0-2-0, Kulasekara 1-0-13-0, Kaushal 1-0-5-0.

Sri Lanka 133 (37.2 overs): Sangakkara 45, Thirimanne 41, Tahir 4-26, Duminy 3-29.

Sri Lanka won toss

Scorecard

Simon Mann
BBC Test Match Special

"The TV umpire Richard Kettleborough says that as Malinga landed, part of his foot was behind the line. It looked like a no-ball when they froze the frame, but a fraction of his heel landed behind the line."