Image source, Getty Images

There is some respite for South Africa as Finn Allen receives some treatment from the New Zealand physio.

He is finally back on his feet to take his place at the non-striker's end as Keshav Maharaj begins the over with two dots against Rachin Ravindra.

NZ 137-1published at 11 overs

11 overs

33 needed off 54 balls

Finn Allen swings for the stands off Corbin Bosch's final delivery and the ball ends up deep into the crowd in Kolkata.

The New Zealand opener, however, is visibly in discomfort during his follow-through and will be looked at by the medical staff.

Image source, Getty Images

Corbin Bosch's first ball of the over is dispatched for four past mid-on by Rachin Ravindra.

Bosch, who went for 22 in the final over of the powerplay, concedes only three singles from the next four balls.

Finn Allen is living up to his reputation as one of the best openers in the world in the shortest format.

This is a mismatch of worms.

Image source, Cricviz

Rachin Ravindra is the new batter in for New Zealand.

And he picks up where Tim Seifert left off smashing Kagisa Rabada to the rope through backward point.

Dawid Malan
Former England batter on BBC Radio 5 Sports Extra

Image source, Getty Images

A much-needed wicket. Kagiso Rabada was on the money.

Tim Seifert has really put the marker down and has put his team in front - he kept his momentum and intent.

Simon Mann
BBC Test Match Special commentator

This must be a horrible feeling for Aiden Markram. Everything is just slipping away.

Finn Allen celebrates his half-century with a maximum off Keshav Maharaj over mid-wicket.

Maharaj, after conceding only seven in his first over, goes for 14 this time.

50 for Allenpublished at 8.2 overs

8.2 overs

NZ 108-0 | Target 170

Finn Allen now brings up his half-century in 19 balls, with a four and then a single off Keshav Maharaj.

It's the joint-fastest at this T20 World Cup.

Dawid Malan
Former England batter on BBC Radio 5 Sports Extra

This feels like batting practice for New Zealand.

South Africa looks to be unravelling once again on the big stage.

Tim Seifert finds another boundary through cover to move to 57 from 31 balls.

And the Proteas will need nothing less than a miracle to turn this around now.

50 for Seifertpublished at 7.2 overs

7.2 overs

NZ 97-0 | Target 170

Tim Seifert brings up his fifty in just 28 balls.

It's a bit fortunate as he gets a top-edge on Lungi Ngidi and the ball loops over short third to race away for four.

Steven Finn
Former England fast bowler on BBC Radio 5 Sports Extra

A great opening partnership. They have not missed a trick and have not given South Africa even a sniff. Clear thought-out plans.

It feels like a miracle is needed for South Africa to win this now.