PSV Eindhoven left it late before beating Groningen while Roda JC leapfrogged Heerenveen.
Eredivisie leaders PSV needed an 85th minute winner from Alex to see off Groningen and extend their advantage over Ajax.
Goals were at a premium in Holland and Andres Oper's strike just before half-time ensured Roda saw off Heerenveen.
The three-point haul for previously eighth-placed Roda moved the side ahead of Heerenveen into sixth.
Elsewhere, Sparta's clash with Heracles finished goalless along with Willem II's trip to Twente.