...But it is now. Arsenal played out the final couple of minutes relatively comfortably, and see out a fourth successive win. Because I'm very quick off the mark, a brief report is already live on our site. I'm off to add some substance to it. Thanks for your company - see you soon.
Looks as if about half of the crowd have already left to beat the rush for the Tube. It's not quite over yet...
It's a really open finish to the game. Olivier Giroud turns on the edge of the area and hammers one just wide. Swansea pile forward once more, but the home side have enough men back to thwart the attempted counter-attack. Three added minutes to play.Copyright: Getty Images
Swansea have to go for it, and so Arsenal could face a few nerves yet. Hector Bellerin makes a mess of a defensive clearing header, and the ball is returned towards Oliver McBurnie, who cannot head it towards goal, and the danger passes.
More fine football from Arsenal, working play down the left for Nacho Monreal to cross. Olivier Giroud, arriving at speed in the centre, volleys wide at the near post.
Swansea make their final change, with Oliver McBurnie on for Tom Carroll. Looks as if Swansea have gone 4-2-4 for the final minutes.
A second Arsenal change - Olivier Giroud is on, and Alexandre Lacazette comes off.
Swansea make two substitutions; Luciano Narsingh and Nathan Dyer are on for Mike van der Hoorn and Jordan Ayew.
Bit of a tasty challenge by Arsenal midfielder Granit Xhaka on Swansea's Leroy Fer. Referee Lee Mason gives the old 'come on, lads' lecture, and keeps his cards in his pocket - as he has all afternoon. It's been played in a good spirit, this one.
But Arsenal are not safe yet. Sam Clucas crosses from the left, and Tammy Abraham shows superb technique to control with his back to goal, then spin in the space of a tiny cubicle, before turning a shot just wide from around 15 yards. Abraham claims a corner, and may have a point. He doesn't get one, though.
Sead Kolasinac leaves to a standing ovation, and Rob Holding is on for Arsenal.Copyright: Getty Images
Brilliant again from Sead Kolasinac, with a dragged backheel pass to send Alexis Sanchez away down the left. The Chile international's cross-shot is gathered by Lukasz Fabianski.
Sead Kolasinac has had a good game as an attacking left-wing-back for Arsenal - now he plays a short pass infield to Alexis Sanchez, who wallops a long-ranger well over the bar.
Paul Clement, Swansea's head coach, strides to the edge of his technical area to bellow some instructions. He still has three substitutions he can make - as does Arsene Wenger.Copyright: Getty Images
A thrilling Arsenal counter-attack, led by Hector Bellerin, nearly brings Arsenal a third, which surely would have ended any Swansea hopes of a point. Bellerin dashes down the right, feeds a pass crossfield to Aaron Ramsey, then darts to meet the diagonal return cross - but lofts a shot onto the bar.
Match of the Day commentator
Anything that Swansea get from today would be a bonus, because their next three games are against Brighton, Burnley and Bournemouth. It's dangerous to talk about winnable games, but you know what I mean."
Arsenal's passing now has a greater air of confidence. Do Swansea have a Plan B? Hector Bellerin, down the right, fizzes over a cross that Alexandre Lacazette flies towards, like a man fired out of a cannon. However, he cannot quite reach the ball, which carries on its journey.
How the mood has changed - and it's a goal against Swansea from the man who started his career at their big rivals Cardiff.
Sead Kolasinac is involved again. The Bosnia-Herzegovina wing-back gets down the left and cuts back for Aaron Ramsey to steer his third goal of the season into the bottom corner via the foot of former Arsenal keeper Lukasz Fabianski.Copyright: Reuters
Swansea creaking now. Alexis Sanchez floats over a free-kick from the left, and Laurent Koscielny has a clear headed chance at the back post, but doesn't connect cleanly - it may have come off his back - and the ball bounces wide.
That comes moments after Tammy Abraham, at the other end, has a goal ruled out for offside after Sam Clucas steers the ball into his path. Replays show it is the correct decision.
Just what Arsenal needed.
Good build-up too. Alexandre Lacazette's persistence takes out a couple of Swansea defenders, and Mesut Ozil works the ball left to Sead Kolasinac, who fires across the goalkeeper and into the far corner via a slight deflection.
It is Kolasinac's first league goal for Arsenal - although he has scored for them in the Community Shield and the Europa League - and only the second league goal Swansea have conceded away from home this season.Copyright: Getty Images
Granit Xhaka, who has faced heavy criticism from Arsenal fans for his performances, plays a long diagonal ball left to Sead Kolasinac, who has time to cross - but hits the first defender. Must do better.
Swansea wing-back Kyle Naughton seems to pull up with a problem, but is playing on for now at least.
Arsenal, by the way, have not lost at home in the league since 31 January, when Watford defeated them 2-1. Arsene Wenger's side have come back from conceding the first goal to win their last two games - can they do it again here?
The teams are back with us. Swansea are 45 minutes from their second away league win of the season - the other was at Crystal Palace in August.
- SMS Message: This is a slow motion car crash from Wenger and its lasting too long! from Ajay from London