I don’t know how the FiveThirtyEight comes up with it’s defensive rankings. The Barcelona CBs back line has been inconsistent all season. Besides Busquets they also have no one in midfield that will do the dirty work. Verratti completely dominated them in the CL match and the little Italian made their midfield look scared. This team has a problem playing physical teams (e.g. Atletico Madrid) and Barcelona seems like they don’t want to work as hard.