Paul Dummett's fierce shot from the edge of the area deflected into the top corner for Newcastle's second equalizer in a thrilling game at St. James' Park.Rooney put United ahead from the penalty spot early, before setting up Jesse Lingard for the second goal near halftime.
Georginio Wijnaldum and Aleksandar Mitrovic, also with a penalty, hauled Newcastle back level, only for Rooney — with a curling shot from 20 meters in the 79th — to restore United's lead.
United dropped to sixth place.