Rishi Bhabutta: Backing Du Plessis to show his class here with a big knock. Gets overshadowed by AB and Amla but is a crucial part of SA's team.

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Graeme Swann
Ex-England spinner on BBC Test Match Special

"The ball is swinging, which makes you tighten up a little bit before you go in. It's still swinging a bit now, which tips the balance towards New Zealand for me. If you bowl fast and straight to South Africa, they'll eat you up, but there are very few teams in the world adept at scoring well against swing bowling."

There are an awful lot of South African nerves on display at the crease. Southee helps Proteas out with a wide and a short ball that De Kock controls on the pull for a single. Du Plessis keeps the strike with a push to mid-wicket for the third run from the over. This tense, gripping stuff.

Neil Manthorp
BBC Test Match Special

"AB de Villiers said after the Pakistan game at this ground that he was struggling to pick the ball up under lights. South Africa will be far more concerned by New Zealand's swing bowlers than their pace [as NZ's Adam Milne has been ruled out of the tournament with injury] as they're used to facing Dale Steyn and Morne Morkel. A small amount of swing can be more handy than lots."

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Boult continues to charge in and continues to test the SA pair. They are happy to leave him alone when he hits the mark outside off, which he does with regularity. There is a great deal of respect being shown to the young bowler - understandably so. From the Proteas' point of view, they will be happy to see off this front-line assault with wickets in the tent and aim to capitalise later.

Henry Ellison: Hugely important wicket! Bat dominated #CWC15 and yet Trent Boult has been immense.

Southee has settled into a superb early rhythm, finding a lovely spot outside off and, with the bit of swing he is generating, planting enough doubt in the SA batsmen's heads that they hold back from offering a shot. De Kock steers a straight ball down to fine leg for a single, but it is the only run of the over.

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Alison Mitchell
BBC Test Match Special

On Twitter:, external How NZ needed that after two missed catches. Heads could have dropped.

Stephan Shemilt
BBC Sport in Auckland

"What an atmosphere inside Eden Park - hair-raising, spine-tingling stuff. There's a huge cheer, the sort usually reserved for a winning run, just for a diving stop in the covers. Trent Boult is cheered and clapped to the wicket and there are ooohs and aaaahs as Ronchi shells De Kock."

Faf du Plessis is the new man and claims a boundary from his second ball by clipping one wide of short square leg. As we all hoped, it has been a cracking start at Eden Park.

Jeremy Coney
Ex-New Zealand captain on BBC Test Match Special

"Again, the balance of Amla surprised me - he's fallen over slightly towards the off side, but an inside edge onto a full delivery has dragged it onto the stumps to a shout of glee from the New Zealanders."

Boult is in the wickets again! The tournament's leading wicket-taker has started superbly, causing De Kock all manner of problems. It is Amla who falls first, though, edging a full delivery on to his stumps to give the New Zealand pace bowler his 20th victim of the World Cup.

Scorecard

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Naveed Afzal: Am nervous watching this contest and I'm a neutral. Electrifying start to the game and great atmosphere

South Africa are offering chances. Amla top-edges a hook from a short Southee ball and sends the ball looping down to Boult, who runs rapidly round from fine leg but is just short despite his dive. Amla then asserts himself, capitalising on a loose attempted yorker, which he flicks away down to the fine leg boundary, and then flicking a straight ball through mid-wicket for another four. It is has been an all-action start.

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Jeremy Coney
Ex-New Zealand captain on BBC Test Match Special

"I don't think after that over that De Kock will feel he's in control of things. He may look up and bless his fortune."

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Rob Parrett: Just finished work & was about to head to bed but I see #NZvSA is on and simply there is no chance I'm missing this!

Trent Boult suffers a failure to launch with his first ball as he catches his thigh and drops the ball in his delivery stride. Normal service is resumed from his first official delivery as he beats the outside edge of De Kock and then draws an edge next ball that goes just wide of third slip and skips down to the third-man boundary. De Kock picks up another two with a push through cover before another edge flicks the glove of Ronchi before going for another four. That was a chance. It is a really good Boult over, even though it goes for 10.

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Statistics correct as of 22 March.

Jeremy Coney
Ex-New Zealand captain on BBC Test Match Special

"You can see even calm players like Hashim Amla are affected by games like this. There was hesitance about his first defensive stroke. Bit of bounce there from Southee. I played in one World Cup semi-final - one of the six we didn't get through! But some players will be nervous - sometimes it's easier to be in the field as you can get into the game."

Southee finds some early swing to nip the ball away from Amla. It is early movement, though, and the bearded batsman calmly lets three fly by before flashing a drive for the diving Williamson to stop at cover. Two further dot balls give Southee a maiden. It's a good start for the co-hosts.

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