England captain Joe Root on TMS: "Cricket Australia have made a decision which sends a strong message to world cricket. There's a way people want to watch it, and play it - my job as England captain is to make sure we conduct ourselves as we should.

"From the limited experience I've had with Steve Smith, I know he loves cricket. But it's important I don't talk too much about something I don't know about."

Graeme Swann
Ex-England spinner on BBC Test Match Special

I think Steve Smith will play for Australia again. But I won't have everyone saying he is a brilliant leader, because he has fostered this culture.

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Geoff Lemon on whether the three banned players will appear for Australia again: "I think Smith will, as long as he's up for it and mentally determined to come back. He gets to be a normal human being for a little while, rather than someone whose life is all cricket.

"Cameron Bancroft has a harder road back, because he's not the most talented cricketer in the country and it's not easy to come by a spot in the team.

"David Warner, I don't think will ever come back. They see him as a loose cannon and not to be trusted in a team environment."

Graeme Swann
Ex-England spinner on BBC Test Match Special

I do feel for Steve a little bit. I think he's a good bloke and I don't think he's got any malice in him. In 2013, we lost our perspective of how we were viewed, particularly by the media. We did have a siege mentality. We were doing well, we were successful, and we started believing our own hype. I truly believe that's what Australia have done over the past few years.

BBC Radio 5 live sports extra

More from Geoff Lemon on the ball-tampering issue: "Steve Smith's press conference was heart-breaking, really, and I say that as someone who isn't really a cheerleader for Smith or this team. They are real people, with real lives, and it was hard to watch."

"I think most of us probably bought the story about the tape, because it seemed so detailed. That was the main jarring bit later on, finding out they'd deliberately lied in that press conference and tried to sell it to us.

"That's the bit that I think makes the ban justified - that deception."

This sums it all up well:

Gareth Davison: Cook is the best English batsman ever. Cook should be dropped, Cook is amazing. Cook is the source of all our problems. 32 centuries? Who cares? 10,000 runs? Whatever. The trials and tribulations of being a fickle English fan know no bounds.

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Australian cricket writer Geoff Lemon on Darren Lehmann's resignation: "I didn't really expect him to go. 24 hours earlier, he had been very determined to stay. We did think he might get the chop in the future but it was a bit of a surprise.

"When he walked into the room today, we all knew what was about to happen next. It was pretty emotional and intense. It's been a pretty full on day."

Is everywhere in New Zealand as gorgeous as the Hagley Oval?

Jonathan Agnew
BBC cricket correspondent on Test Match Special

There are hoards of people on the outfield. They are invited on - there's a sign on the board saying "fans on The Oval at lunch".

Andrew Samson
BBC Test Match Special statistician

Since the start of 2016, Neil Wagner has taken 80 wickets at 23 in 17 Test matches.

It's been an odd few days for cricket, and I think we all need a bit of a lift. So here's the greatest, happiest dog in cricket.

This is Trent Boult's dog, Louie. And yes, I am a grown adult.

Image source, Instagram

BBC Radio 5 live sports extra

Over lunch, Test Match Special are discussing the latest in the ball-tampering scandal, and preview the fourth Test between Australia and South Africa.

Right, the lunch break is my cue to hand you over to Amy Lofthouse.

See you for the final session. Ta.

Arjun Singh: Just heaved a huge sigh of relief to reach a break without losing a wicket in the last over before the end of a session! Well played Stoneman and Root so far.

Sam Hunt: Not an awful first session, will get easier in the afternoon. Just an inevitability about Vince though - not a Test match player for me. Big chance for Stoneman to get a big score.

Vic Marks
Ex-England spinner on BBC Test Match Special

That was a good, almost old fashioned session of Test cricket, played in sublime conditions. Both sides will be relatively content. I think England will be relieved they got to lunch just two wickets down.

New Zealand won the toss and put England in to bat once again following that humiliating 58 all out in Auckland.

And Alastair Cook departed for just two, bowled by a late-swinging beauty by Trent Boult.

James Vince came in and played several delicious drives before he yet again fell cheaply - lbw on umpire's call playing a lazy shot to Tim Southee, after the Hampshire man had already been twice reprieved on DRS.

Mark Stoneman was shaky early on but has dug in well and grown more assured, while Joe Root has been busy and looked in decent touch.

Honours even in Christchurch.

Neil Wagner is digging it in short.

Joe Root is playing it well.

A maiden to finish the session.

Root and Mark Stoneman take England through to lunch on 70-2.

svenc: Would it be too revolutionary to open with Root and Bairstow?

Niiiice. Sodhi strays full, Root stays leg side of it and drives it sweetly through the covers for four.

Vic Marks
Ex-England spinner on BBC Test Match Special

I remember I was facing Jeff Thomson in a one-day match. The shot I played felt like a brilliant hook shot but I think it was more of a top edge that went to four. In my mind, I had hooked him for four and I was feeling pretty good. Then I heard Rod Marsh from behind me go, "Thommo, you're bowling complete and utter dross!" to try and antagonise him. Thommo was a bowler who didn't say a lot. The really fast bowlers never needed to.