This will be a memorable derby for Manchester United fans and especially for the coming of age of Amad Diallo.
United inflicted further misery on Pep Guardiola as they staged a dramatic late comeback to snatch a thrilling victory at the Etihad Stadium.
Josko Gvardiol had given City the lead with a trademark header, but Amad Diallo proved to be the hero for the Red Devils, scoring the second to secure a stunning 2-1 victory.
The game was a fiery affair from the off, with tempers flaring in the opening stages.
Kyle Walker's theatrics after a coming together with Rasmus Hojlund threatened to boil over, but cooler heads prevailed.
However, the biggest talking point of the first half was Gvardiol's goal. The Croatian defender, rose to power home a header after a fortuitous deflected cross from Kevin De Bruyne.
United struggled to create clear-cut chances in the first half, but Amad was a constant threat down the right flank.
The winger tormented City's left-back, Matheus Nunes, who looked uncomfortable throughout the game.
Nunes, deployed out of position by Guardiola, struggled to contain Amad's pace and trickery.
His poor challenge on the winger ultimately led to the penalty that brought United back into the game.
Fernandes stepped up to confidently dispatch the spot-kick, reigniting United's hopes of securing a shock victory.
And Amad wasn't finished yet. The winger capped off a brilliant individual performance with a late winner, rounding Ederson and slotting home to send the travelling United fans into delirium.
The result will be a major blow to Guardiola, who is already facing mounting pressure after a disappointing start to the season.
For United, it was a much-needed victory that will give the team a much-needed boost of confidence.
Amad, in particular, emerged as the hero, silencing his critics and proving his worth to the team. This was a derby that will be remembered for years to come.
Despite the victory, familiar issues resurfaced for United. The vulnerability at set-pieces was evident as they conceded City's solitary goal from a set-piece. T
his issue, which has resulted in eight goals this season, continues to be a challenging point for Amorim's squad.
Overall, this derby victory signals potential and progress for United under Amorim's management.
However, the match also reveals areas needing improvement, including attacking capabilities in particular as despite plenty of possession they struggled to create chances.
