Casemiro’s stoppage-time header earns United a point in a 1-1 draw with Chelsea.
The game took a long time to open up, but Kepa made some great saves in the first half to deny Rashford and Kepa.
Chelsea had the better of the second half, with Chalobah coming close with a thumping header that smacked off the crossbar.
Jorginho appeared to have won it with an 87th-minute penalty after McTominay wrestled Broja to the ground, but Casemiro’s header deep in stoppage time, awarded by goal-line technology, denied the Blues all three points.
Potter’s unbeaten start at Chelsea now stands at eight games, and they remain in fourth place, one point ahead of United. Next is the Champions League, where they face Salzburg.
As it stands, United’s unbeaten streak extends to six games, while on Thursday, they play Sheriff in the Europa League.