Chelsea cruised into the quarter finals of the Emirates FA Cup after crushing Manchester City 5-1 at Stamford Bridge. Manuel Pellegrini fielded five full debutants and paid the price. Diego Costa opened the scoring for Gus Hiddink's men, only for City to equalize through 18-year-old David Faupala. But goals from Willian, Gary Cahill, Eden Hazard and Bertrand Traore sealed the win for the Londoners. Meanwhile, West Ham came from behind to thrash Championship side, Blackburn Rovers, 5-1. Elsewhere, Tottenham were beaten 1-0 by London rivals Crystal Palace thanks to Martin Kelly’s first goal since 2011.