THREE MINUTES left. Theo Walcott drives in behind but he's cut off by keeper Lukasz Fabianski.

Leon Britton is back from injury, his first appearance of the season, he replaces Tom Carroll for the last five minutes.

The rain is pelting down...

Tom, London: Are Arsenal the new Spurs? Relying on one player? Throwing away leads? Being generally a bit rubbish?

Josh Davies:, external Another lead lost, with goals screaming of the need for an actual CB to partner Per Mertesacker.

Matthew: , externalSorry but one man to blame. Wenger. Playing a 5'9" left back in the middle of defence. This better make him see sense!

Blade123:, external Calum Chambers is having a nightmare at right-back. Jefferson Montero is terrorising him.

Abz Mulla:, external Gylfi Sigurdsson sending a message to Spurs, "miss me?"

Spurs fans, what would your team give for some of that quality from Gylfi Sigurdsson?

The home crowd are cheering every pass, tackle and header now as they force Arsenal back downfield. When Alexis Sanchez swept Arsenal into the lead few would have seen this comeback coming.

Swansea moving above Arsenal and into fifth as it stands.

Former Arsenal and Wales striker John Hartson
BBC Radio 5 live sports extra at the Liberty Stadium

"Garry Monk will look like a genius now, Bafetimbi Gomis scores with his first touch of the game!

"What an unbelievable strike the first goal was from Gylfi Sigurdsson. The free-kick was 30 yards out, he whips it into the top corner. Wojciech Szczesny had no chance. Sigurdsson has such fantastic technique and he showed it again there.

"Wilfried Bony then came straight off and he looked very disappointed because he wanted to stay on and get the winning goal. Instead he was dragged off and Gomis came on. Bony had every right to feel aggrieved. He is a goalscorer. Swansea were in the ascendency and he wanted to be the hero."

Image source, Reuters

Into the last 10 minutes and Arsenal make a double change. Theo Walcott and Jack Wilshere come on, Aaron Ramsey and Mathieu Flamini off.

A cracking last half hour at the Liberty.

Hanreal:, external That's it, lets just end the game here, it's not getting better than that.

Oletu:, external Sigurdsson, open the top draw and stick that right in there. You will not see a better free kick than that all season!

Hlayiseka Ngobeni: , externalEat your heart out Juninho, WOW!

Kinjal Saurabh:, external That's the Sigurdsson Brendon Rodgers first signed for Swansea. What a freekick son, take a bow!!

Why didn't Arsenal buy another centre-back in the summer? An obvious, but valid question...

Back to basics!

He's only just come on, and Bafetimbi Gomis has his first Premier League goal to put Swansea ahead. Jefferson Montero, electric all night, skins Calum Chambers for the umpteenth time, stands up the cross and Gomis is head and shoulders above the Arsenal defence to head in.

Image source, Getty Images

A special free-kick that one. Right out of the top drawer! Swansea make a change up front as they celebrate, with Wilfried Bony hooked and Bafetimbi Gomis on in his place.

Image source, Getty Images

Wow!

I'll say it again. Wow! What a goal!

Gylfi Sigurdsson takes the free-kick, it's central, 25-30 yards out, and he powers it over the wall and right into the top corner. Sensational!

Image source, Getty Images

Swansea force a corner as they look to respond - Arsenal are a bit ragged but they see the ball out.

Eighteen minutes left. Can the Gunners hang on? They've looked reasonably untroubled since going ahead.

Swansea substitute Modou Barrow then hares down the centre at extreme speed and is fouled by Kieran Gibbs. Booking.

BBC Sport Wales' Dafydd Pritchard: "It was beginning to look bleak for Arsenal as the heavens opened with the game goalless after an hour.

"But Danny Welbeck's incisive run and pass to set up Alexis Sanchez's goal has certainly lifted the Gunners' gloom at the Liberty Stadium, where the rain has abated and Arsene Wenger's side look set to return to the top four of the Premier League."

Calum Chambers will have a shiner in the morning - he gets a rogue hand in the face in the jostling for a corner and already has the telltale signs around his right eye.

Dobs:, external Arsenal went from zero to 100 with that counter attack.

Bright Eugene:, external Danny Welbeck served that goal on a platter for Alexis Sanchez. Well worked.

Stacy Phillips:, external Pure devastating speed from Arsenal there. Let's see if they can hang on though.

Uchenna Obaji:, external Chelsea have players that can turn up and win a match for them, but stop Sanchez and Arsenal will drop points.

A change for Swansea as Gambian midfielder Modou Barrow makes his debut - number 58! He's not even on my squad list. He replaces Marvin Emnes.

Former Arsenal and Wales striker John Hartson
BBC Radio 5 live sports extra at the Liberty Stadium

"A lot of people might have been wondering whether Alexis Sanchez, coming from playing in the sun at Barcelona, could do it on a cold November day.

"Well yes he can! The ball is rolled across to him from Danny Welbeck after a fantastic counter attack and Sanchez could not miss from eight yards out.

"The referee has also booked Tom Carroll, who tried to bring down Welbeck and stop the attack."

Image source, PA