Graeme Swann
Ex-England spinner on BBC Test Match Special

"It was hit hard, he tried to thrash it. Williamson tried to take the catch high to his left and it spun him around, such was the power but it was a definite chance. De Villiers is a dangerous man to drop."

Listen to Test Match Special commentary via the audio icon.

De Villiers whacks Anderson to cover where he is dropped by Kane Williamson leaping to his left. You've got to take them...

Stephan Shemilt
BBC Sport in Auckland

"You feel that South Africa are just getting on top, not least because Abraham Benjamin De Villiers is at the crease. He plays the sort of outrageous shots that only he can. Back-foot drives through mid-on, running the ball to third man no matter what the line. New Zealand will have wanted him to stay down after that dive for the line, he is the biggest obstacle between them and the World Cup final."

De Villiers is toying with New Zealand here. Just as the wideish slip fielder is moved to gully, the right-hander delicately dabs the ball for four - exactly where the fielder had just been moved from. The man's an artist.

Strap yourselves in for the batting powerplay - South Africa have been known to double the score from this stage.

Nick Hebross: Love that the Eden Park PA played the MASH theme while AB was getting treatment from the physio.

Graeme Swann
Ex-England spinner on BBC Test Match Special

"It was a truly appalling run from Du Plessis who tapped it down the off-side and ran. Williamson had all three stumps to aim at but he missed them. A horrific call from Du Plessis but they got away with it."

Du Plessis pushes into the covers, calls De Villiers for a very risky single, Kane Williamson's throw just misses the stumps and ABDV has to put out the full-length dive to make his ground. Looks like he's banged his nose, he needs a quick visit from a reserve with a drink and a towel.

Graeme Swann
Ex-England spinner on BBC Test Match Special

"South Africa got off to a poor start, but they have done well. This is the sort of point where you double your score to get your final total. If South Africa do that they will get to 350. If De Villiers stays in with Du Plessis they could get even more."

Michael Vaughan
Ex-England captain on BBC Test Match Special

On Twitter:, external Only way to be watching the Semi .... #LoveSydney

Image source, Michael Vaughan

Du Plessis, short shirtsleeves pulled right up, rotates the strike with a single. De Villiers - who always seems to have so much time to play the ball - waits before cutting a two through the covers and pulling another four towards cow corner. He's ominously moving up through the gears here.

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

"New Zealand have always picked up early wickets in their other matches and have not really had the pressure of bowling at the death so the pressure is going to be on them and we will have to see how they go."

Prashant Srivastava: Both teams not giving an inch away. That's the beauty of watching two great teams play.

Du Plessis reaffixes the black headband he wears under his helmet - and Vettori's off with one over remaining in his spell. New Zealand need to find seven of the last 17 overs from their "fifth bowler" trio, and so turn back to Corey Anderson who struck in his first over, courtesy of a stunning Martin Guptill catch which I'm sure will be replayed again and again. A single from De Villiers and a controlled pull through mid-wicket by Du Plessis brings up the fifty stand.

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

"It is a real battle between bat and ball with the batsmen wanting to take control and the bowlers wanting to take wickets. Both batsmen have got in here and De Villiers is starting to hit boundaries. New Zealand just need to control these two batsmen. It is a nice equation at the moment, but South Africa are winning."

Fierce from Henry, De Villiers has to weave away from a short ball at the last minute when he had looked to hit him down the ground. But the Proteas skipper will also keep his opposite number thinking in terms of field placings as he drills a couple of boundaries either side of the man at mid-off, while punching a single off the last ball to keep the strike. Already, he has 26 from 23 balls. Time for drinks. The calm before the storm?

Andrew Samson
BBC Test Match Special statistician

"Du Plessis now has the highest score for SA in a World Cup semi-final. The only previous 50 for SA in a World Cup semi-final was 53 by Jacques Kallis v Australia at Birmingham in 1999. "

Du Plessis back-cuts a quicker ball from Vettori for four, which has the bespectacled spinner looking to the heavens in frustration. That's his fifth four, while De Villiers finds the boundary for the first time when he cracks a full toss back past the bowler.

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

"It has been essential batting from Du Plessis and he has been a building block for the rest of the South Africans."

Listen to Test Match Special commentary via the audio icon.

While Vettori has bowled eight overs off the reel, at the other end New Zealand's other six bowlers have all bowled an over each in succession. Now it's the turn of young speedster Matt Henry, who wasn't even in the squad until yesterday. Du Plessis reaches his 15th ODI fifty from 85 balls, having anchored this innings since those early wickets. As if a pressure valve has been released, having reached the landmark, he lofts Henry over his head for six into the corporate boxes. A well-run two - these two are pretty quick between the wickets - rounds off the over.

Stephan Shemilt
BBC Sport in Auckland

"The floodlights are on at an Eden Park ground that is also illuminated by thousands and thousands of orange shirts worn by spectators trying to take the one-handed catch that could win them $1m. With AB de Villiers at the crease, you feel that this is the ball game."