Champions Feyenoord saw their 100 per cent start to the Eredivisie season end with a 1-0 defeat at PSV Eindhoven.
Heerenveen secured a surprise 2-0 home win over 10-man PSV Eindhoven on Sunday.
Feyenoord moved top of the Eredivisie with a 5-0 thumping over Willem II on Sunday afternoon.
FC Utrecht cruised to an opening-night victory in the Eredivisie as they won 3-0 at ADO Den Haag.
Utrecht have qualified for the Europa League after overturning a 3-0 deficit against AZ to triumph on penalties in a dramatic play-off.
AZ Alkmaar took a huge step towards next season's Europa League after beating Utrecht 3-0 at the AFAS Stadion.
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