Martin Guptill looked in the mood early on when he hit this huge six off Bernard Scholtz, but his dismissal for 18 saw New Zealand's early momentum checked.

Carlos Brathwaite
West Indies all-rounder on BBC Test Match Special

The last thing New Zealand wanted was to lose the wicket of Devon Conway. You don't want two new batters at this stage.

Namibia are flying through the overs here as they look to rush New Zealand.

There are just three singles and a wide off Gerhard Erasmus's third over - he is 1-8 so far.

John Blain
Former Scotland bowler on BBC Test Match Special

Oh he is gone! Birkenstock didn't think it was even. The different angle made all the difference.

Simon Mann
BBC Test Match Special

I think he's OK there but it will need checking...

New Zealand look to pinch a second run off the final ball of Karl Birkenstock's over and Devon Conway is in a hurry.

Is this a run out? The umpires send it upstairs.

Glenn Phillips is next up and his first ball sees him play and miss with a waspish drive outside off stump.

Phillips does eventually get off the mark with a single off the last ball.

A bit of pressure building here for New Zealand?

John Blain
Former Scotland bowler on BBC Test Match Special

Again, it shows how taking pace off the ball is key for Namibia. They are giving New Zealand something to think about.

Simon Mann
BBC Test Match Special

Image source, Getty Images

Erasmus bowled that from well back, level with the stumps.

The tall Karl Birkenstock is next into the attack, with New Zealand knocking a watchful four singles off it.

These two batters are quietly getting going. Kane Williamson is 28 from 24 balls, while Devon Conway is a run-a-ball 15.

John Blain
Former Scotland bowler on BBC Test Match Special

This is good batting from New Zealand now.

Kane Williamson is in the mood. The next ball he drives back down the ground for four.

15 off the over. Their most productive for while.

John Blain
Former Scotland bowler on BBC Test Match Special

That's a good shot for six from Kane Williamson. He has stepped outside off stump, hitting against the spin, on a surface he is not comfortable on, and he hit it well.

Pressure valve released.

That's a lovely shot from Kane Williamson as he strides forward to fetch the ball from outside off stump and power the ball over deep mid-wicket for six.

Let-off for New Zealand there.

Kane Williamson drives down the ground and smacks the stumps at the other end.

Bowler Nicol Loftie-Eaton was millimetres away from getting a touch on the way through. If he had, then Devon Conway was way out of his ground.

Here is the second wicket to fall. A smart catch from Van Lingen running in from the boundary to dismiss Daryl Mitchell for 19 and leave New Zealand 43-2.

Skipper Gerhard Erasmus brings himself into the attack and New Zealand continue to deal in ones and twos, there has been just one boundary in the last four overs. Are they playing it safe to set a platform for a late charge?

They are 62-2 at the halfway stage.