In an equal game, even if not fun, the team of coach Olli Gunnar Solchar took advantage of the opportunities while Chelsea missed many opportunities.
Marcial opened the scoring with a perfect header before the break after a cross by Aaron Wan-Besaka, leading the visiting team 1-0. This is United’s first goal in four league matches.
Defender Mujawir added the second goal in the 66th minute with a header after escaping from the control of Antonio Rudiger and met a corner kick by his newly joined Portuguese teammate Bruno Fernandez.
Chelsea scored two goals eliminated by the assistant video referee. Kurt Zuma scored after a corner kick in the 54th minute, and the goal was canceled because of a foul.
Substitute Olivier Giroud believed he narrowed the lead with a header from close range in the 77th minute but was in a position to slip slightly.
Chelsea remained fourth, one ahead of Tottenham Hotspur, fifth. Chelsea will host Spurs on Saturday. United are three points behind Chelsea.