Ajax continued their unbeaten start to the Eredivisie season with 2-1 victory away to Feyenoord.
Siem De Jong and Mounir El Hamdaoui scored either side of the interval to put the Amsterdammers in control before Andre Bahia pulled one back late on for the hosts. The win was the leaders' fifth in their first six league games.
PSV Eindhoven slipped two points behind title rivals Ajax after failing to break down a resolute Roda JC as their game ended 0-0. The visitors created numerous opportunities but could find no way past home keeper Przemyslaw Tyton.
Heracles Almelo and Twente Enschede played out a 0-0 draw. Twente had the better of the opening 45 minutes and their cause was helped when the hosts had Mark-Jan Fledderus dismissed a minute before half-time after picking up a second booking. But the visitors could not make their numerical superiority count as Remko Pasveer made a string of fine saves to earn the Almelo side a point.
Jonathas scored the only goal of the game at NEC Nijmegen's Goffertstadion as AZ Alkmaar finally claimed their first win of the Eredivisie season, 1-0.
The Brazilian finished from close range in the 38th minute to give some welcome relief to Gertjan Verbeek's struggling side. The win, which followed a midweek Europa League victory over Sheriff Tiraspol, moved them to within a point of their opponents in the Eredivisie table.
Nana Asare's late goal extended FC Utrecht's winning start at home this season into a third game after they had twice come from behind to win 3-2 against VVV-Venlo.
Ruud Boymans scored both goals for the visitors, who were searching for only their second win this season. But Ricky van Wolfswinkel equalised on each occasion, his first goal coming from the penalty spot, and Asare maintained the symmetry of Utrecht's opening six games - three home wins, three away defeats.