United shocked their neighbours with some devastating early attacks, then held firm to register a victory that seriously compromises City’s title hopes.
Rashford coolly steps up and rolls a penalty low into the bottom-right corner of the goal, sending Ederson in the wrong direction in the 23rd minute to give United 0:1 lead.
After six minute of the 0:1 lead, Martial plays a simple pass to James just outside the penalty area and continues his forward run, eventually receiving the return 10 yards from goal to make it 0:2 in the 29th minute.
Mahrez in the 85th minute swings a corner into the 18-yard box, and Otamendi meets it with a thumping header to make the final scoreline 1:2.