Scorer: Arshavin (40)
Scorer: Rooney (58 pen.)
Scorer: Diaby (63 o.g.)

Arsenal were denied a last-gasp equaliser in a thrilling encounter with Manchester United which they eventually lost 2-1.

Andrey Arshavin capped a brilliant first half by putting Arsenal ahead and if Ben Foster had not denied Robin van Persie with a brilliant feet-first save, Arsenal would probably have won.

Instead, Wayne Rooney won a penalty when he went down under Manuel Almunia's challenge, and scored it himself before Abou Diaby turned Ryan Giggs' free-kick into his own net to give the hosts their victory.

Van Persie thought he had equalised deep into stoppage time but his effort was ruled out for an offside against William Gallas, and Arsene Wenger's protest against the disallowed goal led to him being sent from the dug-out.

The Gunners were in front and on top through Arshavin's goal when Rooney went down under Manuel Almunia's challenge just before the hour mark.

Rooney sent Almunia the wrong way, ensuring the only blot on Diaby's fine performance turned out to be the own goal that sealed a win that wrecked Arsenal's 100 per cent start to the season.

perfect decision

It had all looked so unlikely at half-time, as Arshavin threatened to run riot.

The Russian might have scored earlier than he did too when Ben Foster flapped at a Van Persie corner.

The former Zenit St Petersburg man made a conscious effort to place a shot towards the top corner. Foster was not the only anxious face to watch it drift narrowly wide.

Then Darren Fletcher slid into Arshavin and despite winning the ball, Arsenal claimed for a penalty.

Referee Mike Dean was standing near enough to make the perfect decision and waved the shout away.

Arsenal maintained their offensive. The impressive Denilson slid a pass through to Arshavin, who had found space between United's defence and midfield which Ferguson's team selection was supposed to prevent.

Quickly Arshavin turned and let fly with a rasper of a drive.

Nemanja Vidic came close to levelling straight away for the hosts but, as they trooped into the tunnel for a dismal half-time debrief, the best they could actually reflect on was a Rooney free-kick that curled narrowly wide.

Strangely given how one-sided the opening half had been, Ferguson did not try to change things during the interval. And his team were almost out of the match before he had retaken his seat.

swept away

Arshavin sped past John O'Shea as though the Irishman was not there to reach the by-line and picked out Van Persie with a teasing low cross that looked certain to be number two until Foster stuck out a leg to make a magnificent save.

At that point, there seemed to be only one winner. How wrong those doubters were as Ferguson's team surged back, Ryan Giggs the architect behind the comeback just as Arshavin had sparked Arsenal earlier.

The difference was Dean said yes when United claimed their penalty as Rooney went crashing to the ground after Giggs had supplied the pass that sent him through one-on-on with Almunia.

Questions were asked when Rooney did not take the one Michael Carrick missed at Burnley. There was no need this time as Rooney went straight for the ball, put it on the spot and promptly sent Almunia the wrong way.

Any pretence at defence was now swept away amid the fervour of an occasion that threatened to become a classic.

When Diaby was hacked at by Rooney and Wes Brown, both men were booked and Van Persie was offered the chance to curl a free-kick at Foster's goal which thudded against the crossbar.

A minute later, from a very similar position, United got their second.

In truth, Giggs' free-kick would not have threatened Almunia if Diaby had not stuck his head on it and deflected it straight into the corner of his own goal.