Joe Root's had enough of this. He's bringing himself on. Mind you, I'm not sure what it says about James Anderson's fitness if Root's bringing himself on before his best bowler. A push down the pitch from Lyon and a turn off the hip from Smith add another couple to the total, while Darren Lehmann and Brad Haddin conspire in the stands.

Jonathan Agnew
BBC cricket correspondent on Test Match Special

Image source, EPA

I've just got a feeling that Nathan Lyon has got his name on this game and he could be a tricky customer for England in their second innings.

He's already had that brilliant run out and he's frustrating England with the bat here, too.

Nathan Lyon's highest score against England is 18 not out. He's got a lovely high elbow as he drives Chris Woakes into the covers. Four! It's short from Woakes, but misguided, trailing down leg and Lyon just swings his arms and helps it on its way. He played that nicely, plenty of control behind the shot. If tailenders are scoring runs freely on this - and they are - then England should be able to do the same. Should being the operative word.

Jake Ball gave Steve Smith a bit of a word then, after he got punched for four. Always seems slightly pointless to me, sledging a bloke when he's on 133 not out, but hey ho.

Image source, Getty Images

Image source, PA

Your alarm has just gone off. Bleary eyed you click onto BBC Sport to check the score, hoping to see England batting.

Nope. Australia are still out there and here's what you've missed - mainly, a Steve Smith masterclass.

The Aussie skipper continued his gritty innings to bring up his 21st and slowest Test century, ably supported by Pat Cummins, who finally departed for 42.

England had snaffled Shaun Marsh, Tim Paine and Mitchell Starc before lunch but were lacklustre afterwards, with Stuart Broad and James Anderson curiously not used for a long time after the resumption.

The tourists have removed Josh Hazlewood after tea but the hosts now have a vital first-innings lead...

Jake Ball has been the most expensive of the England bowlers, and Nathan Lyon adds to this by rolling his wrists nicely to work the ball off his pads and run three. A single comes down towards Anderson at fine leg, who throws it back in with a real grimace on his face. He doesn't look happy, although that could be because he's being kept out there by a man with a Test batting average of 11.77. Or it could just be his normal face. Difficult to tell with Anderson. Oh, that's so very good from Smith, a beautiful push back down the ground for four.

Jesse Cahill: Am I imagining it or does Moeen Ali take a wicket every time the commentators start to say it's not his best spell?

Chris Woakes is going to come on for a spell. He offers up a half volley that Smith absolutely lamps towards cover, but Joe Root intercepts it to keep him on strike. Mark Stoneman follows his captain's example with a fine sprawl to keep a square drive away from the boundary ropes. For all England have let things slide this afternoon, they've been excellent in the field. Smith lets out a shout of annoyance as he misses out on a juicy short ball from Woakes, his bottom hand clutching tightly to the bat, before a full, wide delivery goes whizzing down leg to stop Smith from nabbing a single.

Phil Tufnell
Ex-England spinner on BBC Test Match Special

Image source, Reuters

I know Liam Plunkett didn't play much four-day cricket for Yorkshire this year but he would be ideal for this situation.

A great big lad bowling quick, while you feel that Jake Ball isn't able to do that.

A single brings Nathan Lyon on strike. A good tactic with tailenders is to generally bowl at the stumps, but Ball's first delivery is a yard outside off stump, and Lyon can ignore it. This is short, though, and Lyon can turn it off his hips and away for a single. Lyon has a look on his face of a man who knows that there's nothing in this pitch, or in England's line up, that can trouble him with some properly short, nasty stuff.

Glenn McGrath
Ex-Australia pace bowler on BBC Test Match Special

I was just calling Australia in. That should be enough. Haha.

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There we go. The first ball is short - so short, in fact, that Smith doesn't even need to duck it to avoid it. He takes a step to the side for the next one, going for that tennis shot, and he's instantly asking why that wasn't given a wide. He's got a point. That was well over head height. Smith was almost off the ground trying to get bat to it, and he still missed it by some way. Ball goes short again, Smith goes for the helicopter shot, and that's four! Australia have the lead.

Image source, Reuters

Another change for England - here's Jake Ball and, by the looks of this field, some short stuff.

Stephan Shemilt
BBC Sport at the Gabba

Can you see what is going on at the top of the block of flats at the Vulture Street End? For the first time, people have gathered for a cracking view of the action. The sign outside says 'units to rent'. Just for a week, please.

Broad almost convinces Smith to have a tickle at a dreadful leg side delivery, before Smith gets another single with the most remarkable shot. It's slightly back of a length from Broad, Smith hoicks his left leg out of the way and flicks his wrist to work a single off his pads. I honestly don't know what that shot was. That brings Lyon on strike, which means Root instantly tinkers with his field and goes for a chat with his bowler. Lyon shoulders arms and gets a giant cheer, before he gets slightly befuddled by a Broad leg-cutter.

Simon Mann
BBC Test Match Special commentator

We talk about how England are going to get Smith out... maybe they won't need to now!

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Here's Nathan Lyon. Cheered onto the ground by the Australia fans, booed by the Barmy Army. Moeen fizzes through the rest of the over as Lyon pokes at a few full deliveries.

Steve Putt: More sledging than at the Gabba

Image source, Twitter/Steve Putt

Brad Haddin did for England in that last Ashes series in Australia with the bat. He was magnificent when it came to marshaling the lower order. Stuart Broad says hello to Steve Smith with a fine bouncer, and Smith falls to his knees and curves his back like he's doing the limbo to avoid it. A full toss is bunted towards Moeen on the bounce, before Smith helps a floaty, leggy delivery away.