Vic Marks
Ex-England spinner on BBC Test Match Special

"It is going to be hitting leg stump. He was taken out by the speed off that ball. It came back to him a little bit and hit him on the knee-roll so it wasn't going over the top. Both openers gone and suddenly that meagre total of 300 is looking a bit bigger."

An early bowling change as England turn to the pace of Mark Wood, he gets one to move back in to McCullum, it hits the Kiwi captain on the knee-roll and umpire Tim Robinson's finger is up in an instant.

New Zealand think about a review, and decide against it - it was "umpire's call" over whether it would have been brushing leg stump. And Wood is delighted.

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Willey, left-arm over with a slip in place, concedes his first boundary as Williamson cuts him for four, while McCullum thumps a four between the non-striker and the stumps. A couple of twos mean that while Willey's first two overs cost three runs combined, this one cost 13.

Vic Marks
Ex-England spinner on BBC Test Match Special

"The threat at the moment comes from Willey. If he can keep swinging the ball and I was Morgan I would keep letting him go."

McCullum is finally off the mark from his fifth delivery as he pushes Finn for a single, while Williamson confidently on-drives for four. And when Finn strays with his length, it's more like the old McCullum as he easily picks up a four over the square leg umpire's head.

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Ed Smith
Ex-England batsman on BBC Test Match Special

"What a start David Willey is making in international cricket. It is so good to see a young bowler making such an impact."

Will the real Brendon McCullum please stand up? The Kiwi captain is beaten through the gate by a brute of an inswinger which whistles over the stumps and is taken by Jos Buttler leaping to his left. Willey (wearing ODI shirt number 36 for those of you who note such things) is not express pace, mainly in the low 80s, but when McCullum tries to force another inswinger off his legs, three leg byes are the result. Williamson nearly pops a catch to backward point where the ball falls just short of Jason Roy. But the result is a maiden over for young Willey.

Football Fragmento: David Willey seems to already be a big improvement on Chris Jordan.

Ben Fox: Can I just say that I thought David Willey should have been in the team three years ago.

A gentle start by New Zealand standards, this - England are running round the field with plenty of energy, and Finn keeps Williamson honest with a good line and length. Just a two from the over.

Kane Williamson is the new batsman, he clips a two to get off the mark and nicks the strike with a single. Two overs in, and Brendon McCullum has only faced two balls - and not scored a run yet...

Vic Marks
Ex-England spinner on BBC Test Match Special

"That is as plumb as I have seen. It just swung in a little bit but then came back in to the right-hander. It was right on the stumps on the back leg. You couldn't not give that out."

The fair-haired David Willey strikes with his second ball as he traps Guptill back on his crease! A textbook inswinger from the left-arm seamer leaves Guptill stone dead.

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Finn gets the scoreboard ticking with a leg-side wide. Guptill guides a single, then takes his life in his hands when he miscues one over mid-wicket... but it's just out of reach of Alex Hales as he chases after it.

Vic Marks
Ex-England spinner on BBC Test Match Special

"I am a 21st century man. 300 is not enough. It is like a rite of passage for England. There is a sense where they have top go through this stage of getting the old mentality out of their system, where they can't play defensively. And then they will come to realisation that in the situation they were in they need to make 340."

Ed Smith
Ex-England batsman on BBC Test Match Special

"It's a funny feeling around a ground when you feel that 302 might not quite be enough."

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Simon Mann on TMS thinks it's a little overcast now - New Zealand need 303 from 50 overs at a required rate of 6.06. Steven Finn taking the first over - with Martin Guptill and Brendon McCullum opening up.

And elsewhere in the world of cricket, the only Test between Bangladesh and India in Fatullah finished in a rain-affected draw, despite India (462-6 declared) making Bangladesh (256 and 23-0) follow on.

Back in Southampton, England are preparing to take the field.

Mark in Chipping Sodbury: Let's give Duckworth Lewis a break, it's proved to be a great system, but it uses historical data. The problem at the moment is that we don't have a lot of historical data about teams scoring 350 plus. The game is moving faster than the system, but the system will catch up.

If you didn't hear earlier today, Trent Boult has become the third New Zealand bowler to leave this tour early because of injury, with a back problem meaning he joins Corey Anderson and Adam Milne on the sidelines.

Ryan: Frustrated by some comments. Batting conservatively at 7 down would have seen us get to 330 which still would have made us 2nd favourites. I like the fact we went for 350-370 to give us the best chance. We will win some and lose some that way as opposed to losing every time being conservative.