Ravindra clips a ball gently into the leg side and it should be taken by the captain Hashmatullah Shahidi at short mid-wicket. He tries to take the ball on the dive but it breaks his hand and hits the turf.
Prior to that, Will Young slipped another delicate field through the inner ring at backward point.
NZ 37-1
Four for Will Young, heaving a pull to the boundary from a Fazalhaq Farooqi short ball.
He follows with two down to the third boundary, before playing a single to the same place to retain the strike.
NZ 30-1
Rachin Ravindra is in at three for New Zealand. The 23-year-old made scores of 123* and 51 in this position for in the opening two matches of the tournament, but fell for 9 when opening against Bangladesh last time out.
He fends off three dot balls to end the over.
Post update
Geoff Lemon
BBC Test Match Special commentator
Devon Conway was already halfway off the field.
He might have a future career in umpiring as he made that call very early.
WICKET
Conway lbw b Mujeeb 20 (NZ 30-1)
Three reds on ball tracking!
Bowling around the wicket, Mujeeb's delivery drifted in and maybe there was a question about it doing too much, but the tracking suggests the ball would have hit leg stump.
Conway was walking off after seeing the replay - he'd seen enough. A vital wicket for Afghanistan, is that New Zealand's best batsman gone?
Post update
Alex Hartley
Former England bowler on BBC Test Match Special
This has got a lot going for it.
Umpire review
Mujeeb thinks he has Conway trapped in front!
The umpire is unmoved but the Afghanistan spinner is insistent and he's convinced his captain.
Conway had driven Mujeeb through the covers two balls earlier - has he now got his revenge?
NZ 26-0
Three singles from Fazalhaq Farooqi's over, with Afghanistan yet to change to make any changes in their attack.
Post update
Geoff Lemon
BBC Test Match Special commentator
We spoke before the game about the need for Afghanistan to refocus and stay switched on, so to see that drop go down so early feels like a really big moment.
NZ 23-0
An over of dot balls from Mujeeb is punctuated by Will Young lashing him down the ground for the game's first six.
His fourth delivery offers a bit of air and the New Zealand opener doesn't need an excuse to dispatch the ball over the ropes.
Post update
Daniel Norcross
BBC Test Match Special commentator
That's a lovely shot. Devon Conway has looked in great nick this tournament.
Post update
Katey Martin
Former New Zealand wicketkeeper on BBC Test Match Special
Conway has just caressed that through the covers.
He is New Zealand's most important batter with Kane Williamson out. He probably was before then to be honest.
NZ 17-0
Devon Conway slips Fazalhaq Farooqi's final delivery through the covers for another four.
The New Zealand opener has scores of 152*, 32 and 45 in this tournament and will be fancying another good score today.
NZ 12-0
A first four for Conway, helping a leg-side Mujeeb delivery round the corner.
His then takes consecutive twos - Gurbaz chases the second as it breaks the cover ring and his knee plugs in the earth as he dives to retrieve it. He retrieves it on the second attempt but that could have been nasty.
Post update
I notice on replay that Rahmat Shah also has a digit strapped up - I wonder if that was a factor in the drop?
Post update
Daniel Norcross
BBC Test Match Special commentator
That's a poor drop. It came up at a really nice height.
NZ 2-0
Young should be gone!
Left-arm seamer Fazalhaq Farooqi angles a ball across the opener and draws an edge. It should be easy take for Rahmat Shah at slip, but he spills it reaching to his left.
Maiden for the Afghanistan bowler. His teammates hurry up to him at the end of the over, offering consolations.
NZ 2-0
Mujeeb reels off four dot balls to kick us off, before openers Conway and Young take a single to long on and square leg respectively.
Meanwhile the ailing Kane Williamson is sat in the New Zealand dugout, his fractured thumb strapped up.
Post update
Daniel Norcross
BBC Test Match Special commentator
Mujeeb was lethal against England, they didn't play him well at all. He's not actually a big spinner of the ball.
Live Reporting
Tom Mallows, Mike Peter and Ffion Wynne
All times stated are UK
Post update
Alex Hartley
Former England bowler on BBC Test Match Special
You are expecting most people to take those.
NZ 42-1
Spilled in the field again!
Ravindra clips a ball gently into the leg side and it should be taken by the captain Hashmatullah Shahidi at short mid-wicket. He tries to take the ball on the dive but it breaks his hand and hits the turf.
Prior to that, Will Young slipped another delicate field through the inner ring at backward point.
NZ 37-1
Four for Will Young, heaving a pull to the boundary from a Fazalhaq Farooqi short ball.
He follows with two down to the third boundary, before playing a single to the same place to retain the strike.
NZ 30-1
Rachin Ravindra is in at three for New Zealand. The 23-year-old made scores of 123* and 51 in this position for in the opening two matches of the tournament, but fell for 9 when opening against Bangladesh last time out.
He fends off three dot balls to end the over.
Post update
Geoff Lemon
BBC Test Match Special commentator
Devon Conway was already halfway off the field.
He might have a future career in umpiring as he made that call very early.
WICKET
Conway lbw b Mujeeb 20 (NZ 30-1)
Three reds on ball tracking!
Bowling around the wicket, Mujeeb's delivery drifted in and maybe there was a question about it doing too much, but the tracking suggests the ball would have hit leg stump.
Conway was walking off after seeing the replay - he'd seen enough. A vital wicket for Afghanistan, is that New Zealand's best batsman gone?
Post update
Alex Hartley
Former England bowler on BBC Test Match Special
This has got a lot going for it.
Umpire review
Mujeeb thinks he has Conway trapped in front!
The umpire is unmoved but the Afghanistan spinner is insistent and he's convinced his captain.
Conway had driven Mujeeb through the covers two balls earlier - has he now got his revenge?
NZ 26-0
Three singles from Fazalhaq Farooqi's over, with Afghanistan yet to change to make any changes in their attack.
Post update
Geoff Lemon
BBC Test Match Special commentator
We spoke before the game about the need for Afghanistan to refocus and stay switched on, so to see that drop go down so early feels like a really big moment.
NZ 23-0
An over of dot balls from Mujeeb is punctuated by Will Young lashing him down the ground for the game's first six.
His fourth delivery offers a bit of air and the New Zealand opener doesn't need an excuse to dispatch the ball over the ropes.
Post update
Daniel Norcross
BBC Test Match Special commentator
That's a lovely shot. Devon Conway has looked in great nick this tournament.
Post update
Katey Martin
Former New Zealand wicketkeeper on BBC Test Match Special
Conway has just caressed that through the covers.
He is New Zealand's most important batter with Kane Williamson out. He probably was before then to be honest.
NZ 17-0
Devon Conway slips Fazalhaq Farooqi's final delivery through the covers for another four.
The New Zealand opener has scores of 152*, 32 and 45 in this tournament and will be fancying another good score today.
NZ 12-0
A first four for Conway, helping a leg-side Mujeeb delivery round the corner.
His then takes consecutive twos - Gurbaz chases the second as it breaks the cover ring and his knee plugs in the earth as he dives to retrieve it. He retrieves it on the second attempt but that could have been nasty.
Post update
I notice on replay that Rahmat Shah also has a digit strapped up - I wonder if that was a factor in the drop?
Post update
Daniel Norcross
BBC Test Match Special commentator
That's a poor drop. It came up at a really nice height.
NZ 2-0
Young should be gone!
Left-arm seamer Fazalhaq Farooqi angles a ball across the opener and draws an edge. It should be easy take for Rahmat Shah at slip, but he spills it reaching to his left.
Maiden for the Afghanistan bowler. His teammates hurry up to him at the end of the over, offering consolations.
NZ 2-0
Mujeeb reels off four dot balls to kick us off, before openers Conway and Young take a single to long on and square leg respectively.
Meanwhile the ailing Kane Williamson is sat in the New Zealand dugout, his fractured thumb strapped up.
Post update
Daniel Norcross
BBC Test Match Special commentator
Mujeeb was lethal against England, they didn't play him well at all. He's not actually a big spinner of the ball.