The snippet of sun that penetrates Wembley's opening is shining down on Arsenal's back four and they knock the ball around slowly to release Debuchy and launch an attack, snuffled out again. Reading's closing of space is impressive, they fill pockets and intercept with frequency.

Hector pings one from their defence and that's a throw in high up the field. A breather for this industrious bunch.

Have any pre-match expectations of a straight-forward Arsenal progression now been dismissed?

Image source, Getty Images

Reading's endeavour all over the field is evident and Jordan Obita's cross has to be blocked by Debuchy after some nice passing in midfield by the Championship side.

Former England midfielder Danny Murphy
BBC One

"Michael Hector has started the game really well. He looks confident and athletic. You can see why Premier League scouts would be interested. It's hard to believe that Reading are where they are in the Championship. They have some youth, some experience and some talent."

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Michael Hector is impressing in the Reading back line early on, sliding, jumping, covering, you name it. He has already won possession back three times for his side, though he has lost the ball on five occasions. Perhaps the 22-year-old is a spoiler and not an artist.

Laurent Koscielny may have a shiner from Jamie Mackie - unintentional. It looks like an arm to the face. Alexis Sanchez may have a bruise or two too as he gets rumbled in midfield by a mixture of Garath McCleary and Nathaniel Chalobah. Nothing like a bit of rough and tumble.

Good work ethic from Steve Clarke's side on show.

Alexis Sanchez leaps like a frog at the back post to meet Mathieu Debuchy's cross but he cannot quite get enough pace on his header to beat Adam Federici.

THIS TIME MAYBE, the Chilean is in from Cazorla's pass and out rushes Federici... Sanchez is there first and pushes the ball past the keeper, goes to ground, nothing given.

There was no appeal from Arsenal but a hairy moment to say the least for Reading. Rapid stuff from Federici.

Steve Carman: My 71-year-old mum is faster than Mertesacker.

TheGasman: My Granny's quicker than Mertesaker!

Peter Collins: Mertesacker with pace and tricks... What on earth happened to him?

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The Gunners have had around 77% of the ball so far and there's no doubt the clever touches that so often define their goals are on show, Aaron Ramsey nearly flicks an opening but a blue and white shirts is in the way.

Former England midfielder Danny Murphy
BBC One

"You can tell Mesut Ozil is playing with more confidence. He is playing in the middle and wanting the ball more.

"Francis Coquelin has been superb for Arsenal recently and is now probably one of their first names on the teamsheet. All credit to him for thinking his Arsenal career wasn't over and getting in the team."

An un-Arsenal left footed hack upfield by Kieran Gibbs ends a scrappy Reading attack. So far their efforts going forward have lacked fluidity but there is enough hustle there to build hope of something happening if Arsene Wenger's side briefly tune out. The rhythm comes at the other end as Ozil interchanges and Cazorla curls one about three feet over from 20 yards.

Former England winger Chris Waddle
Match of the Day live at Wembley

"I thought that free-kick from Mesut Ozil was going in and Adam Federici did too, plunging to the left of his goal.

"It's been a pretty even game so far. Arsenal are edging it on possession but Reading do carry a threat. When they get the ball down out wide they look very dangerous."

Arsenal have a free-kick in a glory area - central and around 30 yards from the net. Mesut Ozil fancies a bit of this, licking his lips he curls one just off target.

The club's most expensive ever signing has some stage to impress on here. Does he have the needle to pick this Championship side apart?

Former England midfielder Danny Murphy
BBC One

"Apart from the one attack from Arsenal, Reading should be very pleased with themselves. It is a positive start, they have got good numbers forward when they have attacked, but with Arsenal's quality and pace you always have to be switched on."

Good work by Reading defender Michael Hector to cover and end Arsenal hopes of getting in behind. At 22, he will take that moment to settle some nerves. You get the sense these Reading players have had the seriousness of this Arsenal threat drilled into them all week. Their eyes are those of men on red alert.

Wembley draws a breath after a frenetic start as Garath McCleary lines up a free-kick delivery. It's a big build-up, bodies in the area smuggle a clearance but only as far as Nathaniel Chalobah who volleys wide via a deflection.

Former England midfielder Danny Murphy
BBC One

"Jamie Mackie is quicker than Per Mertesacker, and that's what Mackie is good at, using his pace and power to make the runs and that is something that Mertesacker does not enjoy."

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Jamie Mackie's heart skips a beat as he spins in behind, he can run clear at the Wembley goal can he? No. The flag goes up but it looks a disputable call and the energetic striker puts his hands on his heads. He saw the headlines briefly.

Anyone looking for a premonition?

Earlier this week Reading beat Arsenal in under-21 action. The goalscorer was Niall Keown, the son of a certain former Arsenal centre-half - Martin.

Image source, Getty Images

Niall, 20, has already got his hands on the Premier League trophy. Here he is picture (left) with his old man back in 2004.

Former England winger Chris Waddle
Match of the Day live at Wembley

"It's what we expected so far, with Arsenal dominating possession and Reading defending in numbers. Earlier Danny Welbeck was played through with a ball over the top and the Reading back two clearly can't keep up with him. That's why Welbeck has been selected to play today - for his pace."

The Royals take the jabs and go counter-punch through Jordan Obita. A cross-field pass rolls into his path, why not? Whack. It's down the throat of Wojciech Szczesny from 25 yards and his handling is admirable.