Jonny Bairstow's second straight century helped England to 305-8 off its 50 overs and the Black Caps never looked like chasing down the target after the run-outs of Kane Williamson and Ross Taylor in successive overs left them 69-4.
New Zealand was eventually dismissed for 186 and leapfrogged in the standings by England, which will end the group stage in third place. The tournament host will play in the second semifinal, at Edgbaston on July 11, against the team that finishes in second place — currently India.
England, which entered the tournament as the world's top-ranked team, marches into the semis following morale-restoring wins over India and New Zealand back to back. New Zealand, which had lost to Pakistan and Australia before heading to Chester-le-Street for its group closer, is set to play in the first semifinal in Manchester on Tuesday when it will have to find momentum from somewhere.
New Zealand is currently two points ahead of fifth-place Pakistan, whose final group game is against Bangladesh on Friday, but is highly unlikely to lose its place in the top four because of a far superior net run-rate than its rival.
A streaker wearing nothing but a green hat has run onto the field and caused a delay in play in the Cricket World Cup match between England and New Zealand.
Security appeared very slow to react as the spectator jogged toward the wicket and danced about in front of New Zealand batsmen Tom Latham and Mitchell Santner. He then weaved around security staff as they attempted to stop him before he was brought to the ground.
With the crowd cheering, the streaker briefly broke free from four members of security and ran back toward the middle. He was stopped for a second time and led away.
New Zealand resumed on 145-6, chasing 306 to win.
Ambati Rayudu, on standby for India, has decided to retire from all cricket.
The decision by the middle-order batsman came a day after India qualified for the World Cup semifinals.
The 33-year-old Rayudu missed out when injuries ruled out batsmen Shikhar Dhawan and Vijay Shankar, and they were replaced by Rishabh Pant and Mayank Agarwal.
Rayudu made his debut in 2013 and played 55 one-day internationals, averaging 47.05. He went to the 2015 World Cup but didn't play.
He was in contention for No. 4 in the batting lineup until a mediocre home series in March against Australia, followed by a mediocre IPL.
He captain India at the 2004 Under-19 World Cup, and summed up his career as "a wonderful journey" in a letter to the Hyderabad Cricket Association, forwarded to the Board of Control for Cricket in India.
The run-outs of Kane Williamson and Ross Taylor — one unfortunate and the other misguided — have left New Zealand on 69-4 and staring at defeat against England at the Cricket World Cup.
The Black Caps were rebuilding after the early losses of openers Henry Nicholls (0) and Martin Guptill (8) when Williamson — their rock and captain — was sent back to the pavilion by the harshest of manners.
Taylor played a straight drive that glanced off the fingertips of bowler Mark Wood and onto the stumps, with Williamson out of his ground at the non-striker's end. After a lengthy look at the replays, Williamson was given out for 27.
Taylor departed the next over after choosing to go for a risky second with the ball heading to Adil Rashid at fine leg. Rashid's throw was pinpoint and Jos Buttler removed the bails with Taylor short.
New Zealand was chasing 306 for the win that guarantees qualification for the semifinals.
England stumbled after a blazing start by in-form openers Jonny Bairstow and Jason Roy to post 305-8 against New Zealand in their high-stakes group match at Chester-le-Street.
Bairstow scored 106 for his second straight century and Roy swatted a 61-ball 60, setting up England for a shot at a massive total under sunny skies in a match the team must win to guarantee a place in the semifinals.
But from 194-1, England lost Joe Root (24), Bairstow and Jos Buttler (11) in a 19-ball spell to slump to 214-4 and the boundaries began to dry up.
Eoin Morgan's 42 off 40 balls helped to inch his team past 300, but New Zealand is back in the contest at the packed Riverside Ground. Jimmy Neesham had the tightest bowling figures of 2-41 off his 10 overs.
New Zealand will qualify for the semifinals with a win, and simply avoiding a big loss should be enough to ensure the Black Caps cannot be shunted from the semifinal lineup by fifth-placed Pakistan.
Jonny Bairstow has struck his second straight century at the Cricket World Cup, hitting form just when England needed him to.
The opener followed up his knock of 111 against India on Sunday by reaching three figures against New Zealand by flicking a full toss for four. It was his 14th boundary. Bairstow has also smashed a big six down the ground.
Bairstow acknowledged after the India game he was fired up after being called "negative and pathetic" by former England captain Michael Vaughan for suggesting pundits wanted England to lose at the World Cup.
He was bowled in the 33rd over by Matt Henry for 106 off 99 balls, leaving England 206-3.
England is 161-1 halfway through its allotted 50 overs against New Zealand, a flying start to a match the team must win to guarantee a place in the semifinals.
Jason Roy was the man out after a typically entertaining 60 off 61 balls, but fellow opener Jonny Bairstow (76 not out) was closing in on his second straight century.
Joe Root was unbeaten on 16.
Roy and Bairstow both reached 50 for the fourth time in this tournament.
By reaching 67-0 after 10 overs, England matched its best score from the opening powerplay. New Zealand's bowlers were getting flayed, the only respite coming when there was a brief delay in play as two Black Caps players searched for a ball in the pitchside covers after Roy's top-edge for four.
England has won the toss and chosen to bat first against New Zealand, a huge boost for the Cricket World Cup host in a tournament where chasing teams have struggled.
While England was unchanged from its weekend win over India, New Zealand had two alterations in personnel, both in the bowling department: Pacemen Tim Southee, making his first appearance of the tournament, and Matt Henry in for the injured Lockie Ferguson and spinner Ish Sodhi.
New Zealand captain Kane Williamson said after the toss he would also have had a bat under sunny skies in northern England.
England captain Eoin Morgan said there was "excitement" among his players because "there's a bit more on the line ... it's a bit like a quarterfinal."
England: Jonny Bairstow, Jason Roy, Joe Root, Eoin Morgan (captain), Ben Stokes, Jos Buttler, Chris Woakes, Liam Plunkett, Adil Rashid, Jofra Archer, Mark Wood.
New Zealand: Martin Guptill, Henry Nicholls, Kane Williamson (captain), Ross Taylor, Tom Latham, Jimmy Neesham, Colin de Grandhomme, Mitchell Santner, Tim Southee, Matt Henry, Trent Boult.
New Zealand will be without Lockie Ferguson against England, with the seamer missing out because of a tight left hamstring.
Ferguson is the Black Caps' leading wicket-taker at this Cricket World Cup with 17.
One of England and New Zealand will be in the Cricket World Cup semifinals after their high-stakes meeting at Chester-le-Street on Wednesday.
While the winner heads to the playoffs, the loser will face a nervous wait until Friday when fifth-placed Pakistan gets a final chance to climb into the top four.
There's more at stake for England at Riverside Stadium, where the forecast is for unbroken play.
The tournament host is in fourth place and only a point clear of Pakistan, which closes its group campaign against already-eliminated Bangladesh.
New Zealand is two points clear of Pakistan but has a much healthier net run-rate than its rival. So just avoiding a heavy defeat against England should ensure the Black Caps cannot be shunted from the semifinal lineup.
England is looking to avenge an embarrassing eight-wicket loss to New Zealand at the 2015 World Cup, which captain Eoin Morgan described as the "rock bottom" moment of his career.
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