Arsenal ended a thirteen game winless streak at Old Trafford on Sunday winning 1 nil via a second half spot kick from captain Pierre-Emerick Aubameyang.
The win was also the first time since January 2015( Man City) that Arsenal had beaten the traditional big six away.
The gunners recorded their 16th victory over the reds, only Chelsea(18) have won more.
Manchester United have failed to win any of their opening four top flight games at home for the first time since 1972-1973.
Arsenal’s penalty, conceded by French international Paul Pogba was the fifth United have given away in their last seven home games.
The midfielder has now conceded three penalties in the Premier League since Ole Gunnar Solskjaer took over, no United player has committed more than one foul leading to a penalty.
Arsenal’s new signing Thomas Partey shone bright in midfield with a commanding display dominating the likes of Pogba, Fernandes and Fred.