Rodrigo Riquelme's tidy volley from Cucho Hernandez's cross to the back post after 63 minutes secured all three points for Manuel Pellegrini's side from a tight and even game.On Saturday, Jose Mourinho starts his second reign as Real Madrid coach at Espanyol, after Los Blancos went back to back seasons without winning a major trophy.Hansi Flick's Spanish champions Barcelona visit Elche on Sunday in their first game of the season.