Premier League - Swansea win Arsenal thriller
Nathan Dyer put the Welsh side in front on 57 minutes, only for Theo Walcott to level a little more than 10 minutes later. However, right from the kick-off Danny Graham scored what proved to be the winner for the Jacks.
Not even the introduction of Thierry Henry - making his first Premier League appearance in four-and-a-half years - could rescue a point for the Gunners.
The victory sends the Swans up to 10th in the table, while Arsenal remain four points behind fourth-place Chelsea.
Swansea have shown this season that they are not afraid to play their passing game against any opposition on their home turf, even against the Premier League's finest exponents of that style. In only the first minute they played their way forward and Kemy Agustien dragged his early sighter from range wide of the far post.
Arsenal were ahead not long afterwards, and once again it was their star striker and club captain who got the goal. The ball was shared among several red shirts before Andrei Arshavin threaded an incisive through ball into Van Persie's path. The Dutchman feinted and it appeared his chance may have gone before he fired between compatriot Michel Vorm and the near post.
That goal was Van Persie's 18th in the league this season, and only the 17th netted by any side at the Liberty Stadium in the competition.
A little more than 10 minutes later, Swansea were level. Dyer executed a turn inside the box and Aaron Ramsey caught the diminutive winger's leg as he did so. The Wales captain was very unfortunate to be penalised for a foul when replays suggested that it was Dyer's trailing leg that inadvertently clashed with Ramsey, but Michael Oliver decided from his one and only look at the incident to point to the spot.
Arsenal keeper Wojciech Szczesny dived the right way but Sinclair's strike from 12 yards was good enough to beat him. Sinclair became the first player this season to score four times from the penalty spot with his equaliser, his sixth of the season.
Both sides had chances to score the game's third goal - Van Persie fired right at Vorm after he was found in space by a canny ball inside from Yossi Benayoun before Dyer cut in from the right flank and also struck his effort at the keeper - but it was Swansea who went into the break on top as they dominated possession for the remainder of the half.
The second half saw the same high quality of play from Swansea but also the frequency of chances increase.
Benayoun squared a pass to Arshavin on the edge of the box but the Russian fired his hasty first-time effort over when he had time and space to do better.
At the other end Dyer fired over from range before Joe Allen let fly with a shot that appeared to have Szczesny beaten but flashed the wrong side of the far post.
As the hour-mark approached Swansea struck, and again Ramsey was involved. The former Cardiff player allowed himself to be robbed of the ball all too easily by Allen. The Wales international picked out Dyer in space, and the winger managed to dig out a shot that went over the keeper after getting the ball stuck under his feet. That goal was Dyer's third in as many games.
Arsene Wenger introduced Henry and Tomas Rosicky, but it was Walcott who drew his team level on 69 minutes when he raced on to a through ball and lifted a dainty finish over Vorm.
Arsenal had barely finished celebrating Walcott's first goal since October when they found themselves behind again. Gylfi Sigurdsson – who came on at half-time to make his league debut following his loan move from Hoffenheim – slipped a ball down the channel for Graham to chase. The striker got in front of his marker and fired across Szczesny and into the far corner. It was Graham's seventh league goal of the season, no mean feat considering he did not score his first until October.
Arsenal defender Per Mertesacker somehow conspired to skew a shot wide from six yards at a corner, and he was soon replaced by young forward Alex Oxlade-Chamberlain. Ramsey had a solid header go straight at Vorm while Rosicky and Laurent Koscielny were also both denied by the keeper in the closing stages, but Swansea hung on to claim their sixth and easily most memorable Premier League win to date.