Ajax responded to PSV Eindhoven's statement of intent with a 3-1 victory at AZ Alkmaar in the Eredivisie.
Ajax began their Eredivisie title defence with victory over Vitesse, as Groningen, PSV Eindhoven and Feyenoord also won.
Alireza Jahanbakhsh was NEC Nijmegen's hero with a two-goal haul helping to beat Ajax, condemning Roda JC to the drop.
Real Madrid's Super Cup clash with Sevilla starts a stunning season of live European football on Sky Sports 5.
Ajax clinched their fourth successive Eredivisie title with a 1-1 draw against Heracles Almelo on Sunday.
Roda JC's place in the Eredivisie's bottom three was confirmed on Saturday as they fell to a 3-0 defeat to FC Twente.