Just three teams lead their respective leagues and their Champions League groups - Barcelona, PSG and Man City.
Barcelona are the only side who have an 100 percent record in both competitions, with six wins from six in La Liga and two from two in Europe. PSG and Man City both drew league games, against Montpellier and Everton respectively.
Ernesto Valverde's men have beaten Betis, Alaves, Espanyol, Getafe, Eibar and Girona, plus Juventus and Sporting in Europe. They have scored 24 goals and shipped just two. Messi is the top scorer with 12.