Ajax moved a step closer to reclaiming the Eredivisie title on Sunday with a thumping 4-0 win over FC Twente.
Ajax have returned to the top of the Eredivisie table after winning 2-0 away at Heerenveen.
PSV Eindhoven returned to the top of the Eredivisie table after a 3-0 success at Roda JC sealed a third straight win.
Davy Klaassen's goal handed Ajax a 1-0 win at bottom club SC Cambuur on Saturday that maintained their two-point lead at the top of the Eredivisie.
Marko van Ginkel scored twice as PSV returned to the top of the Eredivisie table with a 4-2 win at AZ Alkmaar on Saturday.
Ajax failed to take advantage of PSV's Saturday slip-up as they dropped their first points in five Eredivisie games at home to NEC.
Ajax closed the gap to Eredivisie leaders PSV Eindhoven back to a single point after thumping Willem II 4-0 on Sunday.
Ajax closed the gap back to one point on Eredivisie leaders PSV Eindhoven with a 4-1 win at home to AZ Alkmaar on Sunday.
Eredivisie leaders PSV Eindhoven coasted to an eighth straight win to open up a four-point advantage over Ajax.
AZ Alkmaar climbed up to fourth in the Eredivisie after beating Heracles 6-2 to maintain their perfect start to 2016.
FC Twente came from behind to beat 10-man Heerenveen 3-1 in the Eredivisie on Saturday, as AZ and Heracles also won.
Eredivisie leaders Ajax were held to a frustrating goalless draw by Heracles at the Amsterdam ArenA.
Ajax extended their gap at the top of the Eredivisie with a narrow 1-0 victory at home to Vitesse on Saturday.
PSV Eindhoven edged out Zwolle 3-2 to move level on points with Eredivisie leaders Ajax.
Eredivisie leaders Ajax slipped to a 1-0 defeat at Utrecht on Sunday, while Feyenoord were held to a 1-1 draw at Groningen.
Dirk Kuyt's impressive scoring form continued for Feyenoord on Sunday as the Rotterdam club beat Heracles Almelo 3-0 at home.
Heracles missed the chance to close the gap on Eredivisie leaders Ajax as they conceded a 90th-minute equaliser at PEC Zwolle.
PSV Eindhoven and Heracles maintained their pressure on the Eredivisie's top two with late away wins on Saturday.
Nigel Hasselbaink hit a 92nd-minute equaliser to earn Excelsior a 1-1 draw against PSV Eindhoven on Saturday night.
Heracles moved to within a point of Eredivisie leaders Ajax after a 2-0 win at home to Heerenveen.