Back-to-back fours from Harry Brook, who has been brimming with classical confidence here.

He adroitly cuts Glenn Maxwell down to the boundary through point then elegantly clips through square for another.

Delightful to watch.

Simon Mann
BBC Test Match Special commentator on BBC Sounds

That's the biggest wide I've seen in one-day cricket for a very long time!

Mitchell Marsh, who isn't shy of rotating his bowlers, turns to Glenn Maxwell.

A couple of wides, and a couple of singles, in his first few balls.

Heart-in-the-mouth shot from Harry Book as he cloths a slower-ball bouncer from Sean Abbott to mid-wicket, but it just eludes the fielder.

Sir Alastair Cook
Ex-England captain on BBC Test Match Special

I think Sean Abbott saw that from Ben Duckett and was trying to fire in a yorker. But when you miss that, it makes that ramp shot a lot easier!

It hasn't been easy for Duckett. The ball has swung and nipped a little bit. Against high-quality bowling, he's played well. He's soaked up a lot of pressure!

Crafty from Ben Duckett, who shuffles across the crease to Sean Abbott and ramps him for four over the head of wicketkeeper Josh Inglis.

Sam Drury
BBC Sport at Lord's

Harry Brook has picked up where he left off in Durham. His timing so far in this innings has been immaculate.

Adam Zampa dangles the carrot to Harry Brook as he gives it a bit of air to the Yorkshireman, who plays it dead late and biffs through the covers for four.

Next ball it comes flatter from Zampa, but Brook has picked his change up and drives him to the fence off the back foot.

Brook has 31 off 24 balls.

Sean Abbott replaces Mitchell Starc at the Pavilion End.

Ben Duckett is not quite able to punish a short wide one from the Aussie seamer, and the boundary rider is able to cut it off.

A couple of balls later and Marnus Labuschagne spies a run-out chance after Duckett worked the ball off his pads, but he cannot pick it up cleanly and throws his head back in frustration.

Fifty for Duckettpublished at 17.5 overs

17.5 overs

Rather more sedately Ben Duckett works it behind square for a single to bring up a 51-ball half-century. Jos Buttler applauds approvingly on the England balcony.

Sir Alastair Cook
Ex-England captain on BBC Test Match Special

Fantastic shot! Marnus Labuschagne is not really at long-on, he's very square and it's a bit of a free hit for Ben Duckett.

Eng 107-2published at 17.4 overs

17.4 overs

Ben Duckett skips down the track and powerfully whacks Adam Zampa back over his head for six.

A lot of bottom hand in that, but very cleanly struck.

Adam Zampa, sporting shades, is tossing the ball from hand to hand after drinks as the Aussie leg-spinner prepares to bowl for the first time today.

Dan: So having watched this series so far, who’s going to be dropped when Buttler is fit and Root isn’t being rested?

Lord's bathed in sunshine now as the players take drinks.

Ebony Rainford-Brent
Former England batter on BBC Sounds

As a keeper, when it's that sort of an awkward bounce, you don't always have your eyes on the ball and he would have felt that it would have gone straight in basically.

An Australian wicketkeeper being involved in controversy at Lord's, well I never. This was one was born in Yorkshire, as well.

Sam Drury
BBC Sport at Lord's

It's all got a bit 2023 here at Lord's with loud boos from the crowd after the replays show that ball clearly bounced before reaching Josh Inglis' gloves.

Those boos turn to cheers as Harry Brook is given not out, overturning the original decision given on the field.

Boos from the crowd as the TV replays appear to show the ball has kissed the turf.