A wonderful Gylfi Sigurdsson free-kick earned Swansea a precious point in their battle for Premier League survival and damaged Manchester United's push for the top four.
Sigurdsson curled over the wall from about 20 yards to cancel out Wayne Rooney's penalty and move the Swans to within two points of 17th-placed Hull.
United stay fifth, level on points with Manchester City, who play Middlesbrough on Sunday, and a point behind Liverpool after the same number of games.
The disappointment of the dropped points was compounded by the loss of both Eric Bailly and Luke Shaw to injuries, joining a list that already includes fellow defenders Phil Jones, Chris Smalling and Marcos Rojo.
But the result was probably fair on Swansea, who had every reason to claim that Marcus Rashford dived for the penalty that Rooney converted.
More to follow.