Eng 8-3published at 5 overs
Buttler takes two from Boult's final delivery as an edge runs wide of slip, the England pair doing some quick running between the wickets.
New Zealand collapse from 111-3 to 147 all out
Topley removes Latham, Phillips & Ravindra to take 3-27
Willey also takes three wickets & runs out Young (33)
Livingstone drags England to respectable total with unbeaten 95 off 78
England end on 226-7 - Curran adds 42 off 35
England slip to 8-3, 55-5 & 103-6
Santner & Phillips take outstanding catches
Rain delays start until 14:00 BST; Match reduced to 34 overs per side
Series now level 1-1 with two to play
Mike Peter, Jonty Colman and Callum Matthews
Buttler takes two from Boult's final delivery as an edge runs wide of slip, the England pair doing some quick running between the wickets.
Trent Boult (one) already has more maidens in this match than the entire New Zealand team (zero) managed in the ODI at Cardiff on Friday.
Tymal Mills
England pace bowler on BBC Test Match Special
Trent Boult, welcome back to this New Zealand team. They've had a dream start here.
Henry Moeran
BBC Test Match Special commentator
Tim Southee has the easiest catch you could imagine.
Stokes c Southee b Boult 1 (Eng 8-3)
Trent Boult is on fire!
He has a third wicket in his third over and Ben Stokes is his latest victim. The England all-rounder spoons the simplest of catches for Tim Southee at mid-off.
Captain Jos Buttler walks to the middle with his team in desperate trouble.
Tymal Mills
England pace bowler on BBC Two
Matt Henry has been in great form, played very well for Somerset winning the blast and he is just a great player.
Matt Henry continues to exert pressure from the other end, he beats the bat of Stokes before jagging the ball back in and hurrying the England all-rounder.
Stokes then finds his first run with a single to square leg.
Andy Zaltzman
Cricket statistician on Test Match Special
Root has four ducks in his last 10 ODI innings, going back to September 2020. He only had four ducks in his first 139 ODI innings.
Two more dots for Trent Boult and that's a double-wicket maiden.
A fantastic start for the 34-year-old in his 100th ODI for New Zealand.
Stokes is struck on the pad first up!
Nothing from the umpire - Trent Boult considers sending the decision upstairs but thinks better of it.
The ball seems to be heading down the leg-side, but ball-tracking has it quite close - umpire's call, striking the very top of leg-stump.
Tymal Mills
England pace bowler on BBC Test Match Special
Good ball from Trent Boult, my finger was up straight away and it's crashed straight on to Joe Root's pads.
Ffion Wynne
BBC Sport at The Ageas Bowl
Everyone in the commentary box had their finger up as soon as that one struck the pad.
Trent Boult is proving just how much of an asset he still is for New Zealand.
Talk about the perfect opportunity for Harry Brook to prove himself though, if he can steer England out of a situation like this...
Root lbw Boult 0 (Eng 6-2)
Two wickets in three balls!
New batter Joe Root is gone. Boult nips the ball in and strikes the England man on the pads.
Root takes a minute to deliberate with Harry Brook before heading on his way.
Here's Ben Stokes and the home side are in trouble in the third over.
Andy Zaltzman
Cricket statistician on Test Match Special
That was Trent Boult's 188th ODI wicket at an average of 23.8, taking wickets at a strike rate of a wicket every 29 balls. Of bowlers to have bowled over 500 overs in ODI cricket, that is the fourth best strike rate.
Tymal Mills
England pace bowler on BBC Test Match Special
That is an excellent catch from Mitchell Santner. Jumped high in the sky. A wicket for Trent Boult in his 100th ODI game. A great start for New Zealand.
Bairstow c Santner b Boult 6 (Eng 6-0)
Fantastic catch from Santner!
Bairstow tries to turn Boult to the leg-side but takes a leading edge. The ball spoons up into the covers - Santner waits a second, takes a mighty leap and takes the catch high above his head.
Bairstow takes a single and Brook faces four dots from Henry, with one zipping past the opener's bat.
Daniel Norcross
BBC radio commentator
That wasn't at all where Bairstow intended that to go.
Matt Henry draws Bairstow's edge with his opening delivery but it breaks away for the first four of the match!
The ball landed short of a diving Daryl Mitchell, in as the sole slip, then hurried to the boundary.
A customarily tidy over from Boult, the veteran New Zealand left-armer hustling in over the wicket.
An opening four run-less balls features an ugly hack from Bairstow that his edges down into the pitch, before he takes a single with a nudge to square-leg.