1) Wojciech Szczesny vs Birmingham City (2011 league cup final)
Ironically Federici’s opposite number on Saturday in Szczesny also made a mistake in the game but it will likely be forgotten due to what happened later on and it wasn’t the first time he had made a gaffe at Wembley
Cast your minds back to the 2011 League cup final where Arsenal were looking to win their first piece of silverware in six years against a struggling Birmingham City side.
In the 89th minute the Polish international got into a mix-up with Laurent Koscielny and the ball broke kindly for Obafemi Martins to convert into a empty net and give the Blues a shock 2-1 win.
It cost the Gunners a trophy and they had to wait another three years to finally end the drought.