Fourth straight win sends Alkmaar top
The defending champions lost their opening match of the season but have improved since then and opened the scoring in the seventh minute when Brett Holman fired home after team mate Mounir El Hamdaoui had missed his kick.
Midway through the first half Sergio Zijler equalised from close range but a minute later central defender Hector Moreno restored the lead with a deflected shot.
Alkmaar are top with 12 points after five matches, two ahead of Feyenoord and Twente Enschede, who meet on Sunday in Rotterdam.
Newcomers VVV Venlo stayed unbeaten after holding NEC Nijmegen to a 1-1 draw, their fifth this season.
On Friday, a last minute volley from Santi Kolk earned Vitesse Arnhem their first win this season, beating Roda JC Kerkrade 4-3.
RKC Waalwijk remained pointless after a 2-0 home defeat by ADO Den Haag.