Manchester United ended a dismal derby sequence and piled the pressure on Manuel Pellegrini as his Manchester City side were well beaten at Old Trafford.
City, attempting to recover from successive away defeats at Liverpool, Burnley and Crystal Palace, made a blistering start and took an early lead through Sergio Aguero.
It was all downhill from then on for the fading Premier League champions as Ashley Young and the revitalised Marouane Fellaini put United in front before half-time.
Louis van Gaal’s side never looked like surrendering the advantage as they secured a sixth straight Premier League win with further goals from Juan Mata and Chris Smalling. bbc.