Five days after surrendering a 3-0 lead in the shocking draw with Anderlecht, Arsenal's makeshift defence imploded yet again in the 2-1 defeat at Swansea today, conceding two goals in the space of three minutes.
And just like the draw with Anderlecht, Alexis Sanchez was head and shoulders above most of his team-mates.
The Chile forward put Arsenal ahead in the 63rd minute, before Gylfi Sigurdsson equalised in the 75th minute and then Bafetimbi Gomis scored a header three minutes later, causing the Liberty Stadium to erupt.
As ever, the internet was quick to react to this stunning match, here are the best tweets and memes...
Swansea 2 Arsenal 1 player ratingsShow all 22 1 /22Swansea 2 Arsenal 1 player ratings
Swansea 2 Arsenal 1 player ratings Lukasz Fabianski Made some important blocks in difficult conditions against his former club. 6/10
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Swansea 2 Arsenal 1 player ratings Angel Rangel Was given a difficult afternoon by the Arsenal forward line. 5
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Swansea 2 Arsenal 1 player ratings Kyle Bartley Former Arsenal man slotted in well to the Swansea defence. 6
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Swansea 2 Arsenal 1 player ratings Ashley Williams The Swansea captain recovered from an early injury scare to lead his team to victory. 7
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Swansea 2 Arsenal 1 player ratings Neil Taylor Looked good going forward, but struggled at the back against Arsenal's pace. 6
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Swansea 2 Arsenal 1 player ratings Ki Sung-Yueng Was less influential after receiving a first half booking. 6
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Swansea 2 Arsenal 1 player ratings Tom Carroll The young Tottenham loanee struggled to make a real impact. 5
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Swansea 2 Arsenal 1 player ratings Marvin Emnes A typically erratic performance, he passed up a good first half opportunity to score. 6
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Swansea 2 Arsenal 1 player ratings Gylfi Sigurdsson Was kept quiet for long periods by Flamini, but produced a sensational free-kick to turn the game on its head. 7
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Swansea 2 Arsenal 1 player ratings Jefferson Montero Swansea's best player, his pace and power troubled Arsenal all game and he set up Gomis brilliantly for the winner. 9
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Swansea 2 Arsenal 1 player ratings Wilfried Bony Battled well, but is struggling to recapture his goalscoring threat of last season. 6
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Swansea 2 Arsenal 1 player ratings Wojciech Szczesny Had no chance with either Swansea goal, but often looked nervous in dealing with a wet ball. 5
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Swansea 2 Arsenal 1 player ratings Calum Chambers Started very well, but epitomised his side's loss of composure late on. 6
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Swansea 2 Arsenal 1 player ratings Per Mertesacker Struggled when conditions worsened in the second half. 5
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Swansea 2 Arsenal 1 player ratings Nacho Monreal Still fails to convince as he's shunted around the Arsenal back-line. 5
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Swansea 2 Arsenal 1 player ratings Kieran Gibbs Given a very difficult game by Montero, but kept going to the end. 6
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Swansea 2 Arsenal 1 player ratings Aaron Ramsey The midfielder looked short of match fitness on his return to Wales. 6
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Swansea 2 Arsenal 1 player ratings Mathieu Flamini Did an excellent job in keeping Sigurdsson quiet for 70 minutes, but then ran out of steam. 7
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Swansea 2 Arsenal 1 player ratings Alex Oxlade-Chamberlain His pace was a constant handful for the Swansea defence. 8
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Swansea 2 Arsenal 1 player ratings Alexis Sanchez Scored his side's goal and oozed class when involved, but was often on the periphery of the game. 8
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Swansea 2 Arsenal 1 player ratings Santi Cazorla His influence on the game diminished after being crocked by Williams early in the second half. 6
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Swansea 2 Arsenal 1 player ratings Danny Welbeck Combines brilliance with the bizarre inside the box, but never stops working. 7
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Arsenal are next in action at home against Manchester United on 22 November after the international week.
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