Graeme Swann
Ex-England spinner on BBC Test Match Special

Any rain is bad news for England because they have been trying to keep this ball as dry as possible.

If any moisture gets on the ball it can stop it from reverse swinging.

Chris Woakes in to replace James Anderson - can he keep up the good work?

Ah, bit short first up and Smith works it away for one.

Ah again, Woakes offers Warner too much width, but the opener can only slash away for a single.

Woakes back on the spot for the next three, but strays too straight off the last and Smith turns it round the corner for one. Looks to be a bit of rain in the air.

I can't remember ever seeing David Warner this watchful at the crease.

It's a testament to the nagging line and length being bowled by England, with Tom Curran backing up the fine work of James Anderson and Stuart Broad after lunch.

The debutant finishes with one of his skilful back-of-the-hand slower balls that Warner leaves outside off. That's a maiden.

Always wanted to be able to bowl one of those. Always went horribly wrong when I tried it in the nets.

Jim Maxwell
BBC Test Match Special

England are working on a plan here of pinning the batsman down so that they create a mistake.

Image source, Getty Images

Anderson to have a go at Smith now. Unstoppable force versus immovable object?

The two duly do cancel each other out for four balls, before immovable object (Smith) guides a wide-ish one away with soft hands through third man for a scampered three.

Anderson gets a bit of sharp bounce off the last but Warner does well to ride it and flick round the corner for one.

Andrew Samson
BBC Test Match Special statistician

The average partnership between these two isn't as good as you might think.

They have batted 26 times together before this Test and their average partnership is 47.40 with two hundred partnerships and eight half-century partnerships.

First run in a while as Smith works Curran into leg for a single.

Still no run for Warner though as he is forced to play out the rest of the over. Tidy start from young Curran.

It's over like this where you really appreciate James Anderson.

OK, no wicket, but every single ball is on the mark and offering no scoring option to one of the most attacking batsmen in Test cricket.

Another maiden as David Warner has to stay watchful.

Tom Curran is about to enter the attack, replacing Stuart Broad.

Smith plays a few nice drives off Broad but picks out the fielder every time.

Another maiden for England and a bit of pressure starting to build after lunch.

No massive excitement yet though - maybe this fella can spark some?

Image source, Getty Images

Anderson to Warner - six balls of unerring accuracy that the Aussie opener can do nothing with but knock away to various infielders. Another maiden for the Lancashire man.

Steve Smith sidles across to off and gets in behind a full ball, stroking down the ground for four. A lovely way to start again after lunch.

The Aussie skipper casually angles another away through the covers for one, before Warner flicks to mid-on for a single.

Ed Smith
Ex-England batsman on BBC Test Match Special

I think it is going to rain. The wind has turned around again.

James Anderson goes full first ball after the lunch and David Warner has to play, driving it away for no run.

Tidy start for Anderson, forcing Warner to just defend the rest of the over - a maiden.

It will be Stuart Broad to bowl from the other end.

Steve Smith and David Warner lean against their bats by the rope. Here come England back out onto the field.

The second session will be under way shortly.

Thanks for all your questions for Glenn McGrath, it's been a cracking listen and will be available as a podcast later.

Image source, PA

Andy in Birmingham - Was there any batsman you ever hated bowling to?

McGrath: "No, never. I wanted to have the ball in my hand and bowl to the guys classed as the best like Sachin Tendulkar and Brian Lara.

"Some days you get on top of batsmen and some days they smash you around. I got Lara out 15 times, which sounds like a lot, but then he also got big centuries and double centuries against us.

"I didn't bowl to too many of my Australia team-mates but I found Matthew Hayden tougher to bowl to than other guys because of his attitude and how he went about things.

"He would bat on off-stump and stop me bowling top of off because it was exactly where he wanted it."

Image source, Getty Images

Bruce Perkins - Would the world be a better place if there was only one type of cricket ball?

McGrath: "It's a tough one. Certain balls perform better in certain conditions and I also always wondered how the Duke ball would go out here.

"You've got to get used to different pitches and different conditions around the world so I have no problem with countries using different balls - its just another thing to get used to."

Thanks Matt, who as a point of contrast has just produced a tub of chocolates.

I've also got some watermelon, an apple and a bag of carrot sticks. Although I did also have a load of chocolate coins earlier. It's all about balance on these overnights.

That TMS Q&A with Glenn McGrath is a really good listen. If you're not already tuned in remember you can do so at the top of this page.

With this match well poised it is time for me to hand over to Jack Skelton. He's fully fuelled for the afternoon session after devouring a pack of half price raspberries.

I'll be back later. See you then.

From Craig Taplin - Who was the best captain you played under and why?

McGrath: "It is a tough one. Each captain I had took over the team and left it in a better position.

"Allan Border took over a fairly ordinary team and made it into a decent team.

"Mark Taylor took over quite a good team. He had a different attitude, more aggressive, and when he passed over to Steve Waugh it was a very good team.

"Steve wanted to crush the opposition from ball one and where was Rick (Ricky Ponting) meant to take the team from there? I think he did a very good job. He had seven players retire over a two-year period and kept it together.

"I have always struggled to say who is the best captain."

Ebony Rainford-Brent
Ex-England batter on BBC Test Match Special

Two of the more fragile batsmen for Australia have gone in Cameron Bancroft and Usman Khawaja, so once again it's down to Steve Smith and David Warner. Things are still set up really nicely for England.