Manchester United had to settle for a 1 - 1 at Swansea, leaving United with a four point lead over Man City at the top of the league.
Patrice Evra gave United the lead after 15 minutes when he got on the end of a Robin Van Persie corner.
But Swansea equalised on the half hour mark through their top scorer Michu - his 13th of a sensational season.
The Spaniard slotted in a rebound after David De Gea turned away a Jonathan De Guzman effort.
Man United dominated the second half but were unable to break through.
And there was even time for a minor scuffle between Robin Van Persie and Swans captain Ashley Williams.
The Dutchman reacted angrily after the defender struck a clearance into his head as he lay on the ground after winning a free-kick.