It was a lively affair in M16, with both sides trying to advance the ball with pace throughout the 90 minutes, but United clearly on top.
McTominay's first goal rewarded the intense early pressure the Reds had put Chelsea under, putting to bed any doubts about the determination in this side and making amends for an earlier penalty from Bruno Fernandes that could only find Robert Sanchez's glove.
Our visitors levelled the game late in the first half, with a placed effort from Cole Palmer which squeezed just past the fingertips of Andre Onana.
It was our no.