The Ashes live updates: Fourth Test, day two, England vs Australia ...

FOUR! Driven beautifully through the covers, past the diving fielder and away for the boundary.

SIX! My goodness! Crawley has just clipped that over wide long on for a huge six. What a shot!

Crawley defends the next, which is actually a no ball.

Now he pushes into the off side and gets a single.

Root gets a single, but what a single, a premeditated reverse scoop to fine leg. Wild.

Crawley clips to midwicket for no run to end the over.

Long chat between Pat Cummins and Steve Smith. Lots to talk about to be honest.

England trails by 11.

Root defends the first couple.

He drives again, but the bottom hand comes off the bat and he doesn't time it well.

Root clips off his pads to midwicket for a single, bringing up his 66th run - he is wearing number 66 on his back.

Mitch Starc isn't happy with the ball, so he throws it to Usman Khawaja and asks him to change it with the umpires, who say no need, get on with it.

Off his pads, Crawley runs through for a leg bye.

Root guides the ball to wide third man and they run a couple.

"Australia are running out of ideas and the energy is inevitably low in the field too," says Alison Mitchell on TMS.

Seems that way.

He's continuing to come in.

Driven into the covers, a single to Crawley.

Another quick two for Joe Root, backward of point.

Another no ball for Australia, their seventh of the innings.

Root guides another away for a single this time to backward point.

There's a little bit of movement here for Marsh, and it's just keeping Crawley honest a bit.

He jams his bat down on the last of the over and the ball squirts off his bat for no run to square leg.

Crawley clips off his pad to square leg for a single.

Starc is still up at 140kph despite his slight limp.

Root drives into the covers and gets a very simple single. Incredibly easy-looking batting out there for England at the moment.

Crawley tries to cut away but can't make good enough contact.

Slashed away by Crawley for another couple backward of square on the off side.

That's the 300 up as England bare down on Australia's first innings score at pace.

Crawley defends the last as the trumpeter starts up a jaunty tune that has the whole party stand clapping away to, as well as me and Jon in the office.

Marsh was ready, Pat Cummins was not, still directing traffic at mid off.

Root walks down the ground and set off for a single but was sent back, he had to run and then Carey dived forward and took the throw incredibly to knock down the stumps. Just a touch late as it happened, but it was still incredibly keeping.

Root gets his single in the end.

FOUR! Crawley goes bang back over Marsh's head, didn't get all of it but the ball bounces right in front of the rope. A big heave from Crawley and that's the first time in a while that he's looked reckless in his attack.

Quick single - that's not great fielding to allow a single there to mid off.

He looked like he was struggling with a slight leg injury before tea ... will he be able to back  up here? Presumably, or he wouldn't have been thrown the ball.

A wide first/second slip in place.

Crawley takes a couple of runs off his pads, he's going to have to hurry and Marnus Labuschagne thrown the stumps down from a mile away and Crawley does get home just about.

FOUR! What a shot from Crawley - he's seeing it so perfectly at the moment and all of the Aussie batters who got themselves starts yesterday will be watching this with that sinking feeling in their stomachs. They have missed out on a few here. It's a brilliant cover drive.

Another push off his pads and another sharply-run couple.

FOUR! Magnificent from Crawley - a straight drive of the highest quality this time and it's straight down the ground for four more.

No runs this time to midwicket to end another very good over for England, who now trail by just 27 runs...

Starc pulled up a bit short there at the end of the over. That leg again...

Lovely half-stop from Hazlewood on his follow through as Crawley drives.

Keeps it to no run.

Crawley gets his ingle eventually though.

Root drives and Hazlewood grabs off his own bowling and shapes to throw the stumps down - Root doesn't seem too bothered, eventually putting his bat down. Oh, it's a no ball too.

Root defends the next too - this pair to will see out these straight, accurate balls.

Or maybe not, Root walks a step down the pitch and clips to midwicket, no run.

Crawley defends the first.

Now he clips off his pads to backward square leg for a single.

Root fends away and takes a single next ball - England able to rotate the strike.

FOUR! Perfect shot from Crawley, on top of the ball, standing upright and pushing back past Cummins to long on, Beautiful balance.

FOUR MORE! Khawaja gave chase to a lofted drive to long off this time.

It's 152 at a run a ball and it's been brilliant from the Kent opener.

It's his second score of more than 150 in Tests and is the fastest 150 ever scored at Old Trafford in Tests.

He adds a single off the last ball to make it a run a ball 153.

Crawley defends.

An easy single now, Crawley just angling the bat into the off side and picking up a very easy single.

FOUR! Beautiful balance from Root, crouching down, leaning back and cutting delicately past gully to the boundary. Amazing shot from Root really, not flashy necessarily but perfectly using the field and the pace of the ball to his advantage.

CLOSE! Oh now that one has stayed low, Root trying to cut but the ball clipping his pad.

ATTEMPTED REVERSE SCOOP! He missed it, it looks very uncoordinated when he misses it...

He pushes the last to mid on for no run.

Zak Crawley has had a bat change between overs there.

BIG APPEAL! Cummins likes this, did Root hit it? Umpire Menon kept his hands by his sides, but then raises one to the side - a no ball. Cummins was about to review that, so he's lucky not to have made that decision before the no ball was called.

Root ran for a leg bye, and Crawley gets a single.

REVERSE SCOOP! FOUR!

It's come off 45 balls! The former England skipper is having a serious dig here.

It's his fastest Test half ton since 2017 — and fourth fastest ever.

Down the leg side, Root swishes at it.

Root clips to wide fine leg for a single.

Crawley now angles the ball down towards the third man boundary and it's only a piece of brilliant fielding by Head that denies Crawley a boundary. He runs three anyway.

Crawley drives but doesn't time the shot well at all and it will be no run.

More solid defence - that is a good line on that off stump line or just outside, angling in to make sure that Crawley plays at it, but there is no movement through the air or off the deck and the opener deals with it perfectly.

Solid defence again from Crawley.

Solid defence ends the over as well.

FOUR! Cummins strays onto Crawley's pads, he flicks it away for a boundary to fine leg.

Solid defence into the off side for a quick single.

Root isn't planning on hanging around for too long, clipping away into the leg side for a single to rotate the strike again.

Crawley pushes into the off side and gets a single.

Good stuff from Cummins, Root drives down the ground and the Aussie skipper tumbles and stops the ball from going back past him, saving all manner of runs in the process.

Root fends towards gully and Cameron Green. There is no run.

Now he takes a single, tucking the ball away on the leg side.

Crawley defends solidly as Hazlewood arrows in at the stumps.

Solid defence back down the pitch, Crawley thinks he might have beaten Hazlewood there but the Aussie quick stuck a paw out and denied the Kent man a run.

Bit too straight this time, a leg bye into square leg for a single.

A slightly more circumspect start for England in the two overs immediately following tea.

EDGED! Was it? Australia likes this! Is Joe Root out? It's a terrific take at second slip by Steve Smith diving forward.

But in vain! There was no edge. Two noises, but both thigh pad.

Root clips the ball away for a single.

Crawley clips off his pads, thinks about a single but there is nothing there. The Old Trafford crowd cheers and appeals in mock outrage at the earlier, completely legitimate appeal from the Aussies.

Crawley sees out the last of the over.

Here are some numbers for that session.

Australia bowled 25 overs. They took one wicket.

England, meanwhile, clattered 178 runs off those 150 balls.

That's 7.12 runs per over.

England now only trails by 78 runs.

Good grief, what a game-changing session.

SIX! Crawley belts a slog sweep an it flies over cow corner. That's a 100 runs between this pair off just 78 balls.

Another sweep for Crawley for two and that's tea.