AZ Alkmaar went clear at the top of the Eredivisie thanks to Ari's winner against Feyenoord.
AZ Alkmaar, Heerenveen and NEC Nijmegen win
AZ Alkmaar went three points clear at the top of the Eredivisie thanks to Ari's second-half goal against Feyenoord.
Second-placed Ajax had drawn level thanks to a 3-0 victory over NAC Breda on Friday.
But Louis van Gaal's side moved out in front on their own again, and heaped further woe on under-performing and injury-hit Feyenoord in the process.
Heerenveen moved up to fourth in the table after a first-half Roy Beerens brace secured a home victory over
De Graafschap.
Beerens struck in the 14th and 23rd minute to give his side their second win in a row and maintain their push for Europe. It was De Graafschap's first defeat in four games to keep them in the bottom three.
NEC Nijmegen survived a late fightback from
Willem II to claim all three points with a 2-1 win in Tilburg.
Jhonny van Beukering had given the visitors the lead in the first half and Rachid Bouaouzan doubled the advantage after the break before Rens van Eijden pulled a goal back for the home side.
ADO Den Haag and
Roda remain in the bottom five after sharing the spoils in a 1-1 draw at Het Zuiderpark.
In what was billed as a "must-win game" by both coaches before kick-off, Karim Soltani put the hosts ahead after 35 minutes but they were pegged back before the break by Marcel Meeuwis.
