Postpublished at 11:28 BST 30 May 2015
Bryan Waddle
BBC Test Match Special
"This is some of the best baseball hitting in the history of this ground. You can't nudge and nurdle this bowling, but there's a stage where it becomes counter-productive."
England slip from 215-1 to 247-5
Cook 75, Lyth 107 - maiden Test century
Cook now England's top Test run scorer
NZ 350: Ronchi 88; Broad 5-109
2nd Test, day 2, Headingley; Eng lead 1-0
James Gheerbrant and Mark Mitchener
Bryan Waddle
BBC Test Match Special
"This is some of the best baseball hitting in the history of this ground. You can't nudge and nurdle this bowling, but there's a stage where it becomes counter-productive."
Benjamin: New Zealand don't do draws, and it is brilliant to watch. They deserve more than a two-match series.
Ed Mehen: As NZ are intent on playing in a one-day fashion why aren't England bowling in like fashion? Get it in the blockhole!
Farcical scenes as Adam Lyth on the boundary completely loses sight of another leg-side swat from Craig. Go right Adam, his team-mates yell, as the frantic Lyth assumes the posture of a man groping in the dark for a lightswitch. Warmer! Colder! It's no use as the ball races away to the boundary. Boult then ramps yet another short ball over the slips for one of the more subtle boundaries of the morning.
Stephan Shemilt
BBC Sport at Headingley
"What on earth is going on? Stuart Broad is bowling to New Zealand's number 11 with five men on the boundary, four of them on the leg side. Is there something wrong with line and length? Have we confused Trent Boult with Brendon McCullum?"
Jeremy Coney
Ex-New Zealand captain on BBC Test Match Special
"How long can you keep going with this attack? Number 11 in, bowl him out. Broad will probably feel he's got two wickets with this method. But sometimes you can get caught up in those methods."
Denz: They're tail-enders - bowl at the stumps maybe?
Michael Shaw: What are we doing! Pitch the ball up and try and hit the stumps
Ben Walker: Morning session fireworks. What's wrong with yorkers and top of off stump?
The average first innings score at Headingley in the last six Tests is 236, incidentally. Craig continues the rampage, carting Ben Stokes back over his head for a huge six.
Andrew Samson
BBC Test Match Special statistician
"Nobody's ever taken five wickets in more than 15 overs, and gone for more than six an over, as Broad is doing."
Broad's figures after that over: 16-0-100-4.
Jonathan Agnew
BBC Test Match Special
"With number 11, I think you've got to try to get him out, not come round the wicket and bowl bouncers at him. England have lost their focus on what they should be doing. Why hasn't Anderson bowled this morning? He'd pitch it up, swing the ball and get them out."
Mark Craig has played second fiddle so far this morning, but no longer. Broad sends one down on a good length outside off and Craig mashes it over backward point. Trent Boult, with the butter-wouldn't-melt grin of a 12-year-old altar boy, then produces a stroke that an axeman would be proud of, brutally swatting a short ball to the mid-on boundary.
Jonathan Agnew
BBC Test Match Special
"I remember Tim Southee making his debut in that game at Napier [when Southee took 5-55 and scored 77 not out], Stuart Broad was playing too and I wrote at the time about how these two young cricketers could be playing against each other for many years to come. But both their batting has gone backwards since then."
So Trent Boult is the new man. He's partial to a few shots too, and after a textbook forward defensive to his first ball, he clubs his second through the off-side. New Zealand motoring here, even though the tank has almost run dry.
Jeremy Coney
Ex-New Zealand captain on BBC Test Match Special
"New Zealand will want as many runs as they can as quickly as they can, to give themselves time in this Test to take 20 wickets."
Jonathan Agnew
BBC Test Match Special
"There is no fast bowlers' union any more, but there is an area in the laws saying you should not bowl fast short-pitched deliveries at tail-end batsmen, so I was pleased to see the umpire step in there."
A wicket entirely in keeping with the tempo of this Test match so far. Henry bludgeons his second boundary of the day, a ginormous flat six in front of square leg, and then tries the same shot next ball and gets a tickle behind. Runs and wickets continuing to flow, and Broad in sight of his 13th Test five-for.
Michael Vaughan
Ex-England captain on BBC Test Match Special
On Twitter:, external Full house... Nice weather... Horses... Where's Wally... Her Majesty... And the Teletubbies... Saturday of the Headingley Test!
Chuck: No internet or TV at home so told my parents I was off to the pub to revise for my 3 exams this week. Cricket on the laptop with calculator strategically placed in sight just in case they check on me. This better be a good day of cricket.
Matt Henry is a bit late on a defensive stroke to the first ball of the day and nearly chops it onto his stumps. He then gets New Zealand up and running with a two to deep square leg, and brings up the New Zealand 300 with a spectacular stroke, giving himself room and walloping Stokes over mid-wicket for four. He tries the same shot next ball and gets one for it via a meaty top-edge into his helmet. That will have woken him up. Seven off the first over, New Zealand picking up where they left off.
Jeremy Coney
Ex-New Zealand captain on BBC Test Match Special
"I'm willing to say that if the swing was there for James Anderson yesterday, it will be there for Trent Boult."
Jonathan Agnew
BBC Test Match Special
"Chris Gayle's a great character, he's always very approachable. The only thing he's lacking is that deep, rumbling voice like a Roger Harper or a Clive Lloyd. For a tall man, he's got quite a high voice. I've heard there are some 'restricted view' tickets available today - it could be the best batting conditions of the match."