By Jack Gallagher Barcelona put in a season-best performance on Sunday night at the Estadio Metropolitano, trouncing Atletico Madrid 3-0 on their home turf. The comprehensive win, courtesy of goals from Joao Felix, Robert Lewandowski and Fermin Lopez, moved Barcelona up to second in the La Liga standings and also extended their unbeaten run across all competitions to ten games. Bizarrely, that run of form has followed Xavi’s decision to step down from his post at the end of the season – something supporters may be starting to hope he reconsiders given how things are slowly falling into place. …