Feyenoord lost ground on the leading duo in the Eredivisie as they had to settle for a 1-1 draw at AZ Alkmaar on Sunday.
PSV Eindhoven maintained their 100 per cent start to the Eredivisie season with a 6-1 victory over Willem II at the Philips Stadion.
Fran Sol scored a hat-trick as Willem II thrashed the previously unbeaten Heracles Almelo 5-0 in the Eredivisie.
AZ Alkmaar continued to set a strong early pace in the Eredivisie after overwhelming FC Emmen 4-1 at De Oude Meerdijk.
Ajax were surprised by Heracles as they were held to a 1-1 draw on the opening weekend of the Eredivisie.
ADO Den Haag and Heerenveen will join Vitesse and Utrecht in the play-offs for the last Europa League spot despite mixed fortunes on the final day.
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