Yuki Kobayashi fired a second-half winner as Heerenveen climbed top of the Eredivisie table with a 2-1 victory at Willem II.
Heerenveen secured a surprise 2-0 home win over 10-man PSV Eindhoven on Sunday.
PEC Zwolle moved to the top of the Eredivisie with a 2-0 win at home to FC Twente on Saturday.
Eredivisie newcomers Venlo maintained their perfect start to the campaign with a 2-1 win at FC Twente.
PEC Zwolle came from behind to open their Eredivisie account with a 4-2 victory over Roda JC, while champions Feyenoord beat FC Twente.
AZ Alkmaar will play FC Utrecht in the Eredivisie's Europa League play-off final after they negotiated semi-final ties.
Ajax kept up the pressure on leaders Feyenoord in the race for the Eredivisie title by thrashing Heerenveen.
Ajax thrashed NEC Nijmegen 5-1 to move level on points with Eredivisie leaders Feyenoord on Saturday.
PSV Eindhoven moved up to second place in the Eredivisie after a 2-0 win at Sparta Rotterdam.
ADO Den Haag boosted their hopes of survival in the Eredivisie with a 1-0 home victory against NEC on Saturday.
Go Ahead Eagles snatched a 2-2 draw at Heerenveen on Friday thanks to a late equaliser from substitute Leon de Kogel.
Utrecht came from two goals down to win 3-2 at Groningen to record a fourth win in the last five Eredivisie matches.
Ajax kept up the pressure on Eredivisie leaders Feyenoord with a 2-0 victory against Sparta Rotterdam on Sunday.
Feyenoord won 2-0 at Twente on Sunday to maintain their five-point Eredivisie lead, as Ajax, PEC Zwolle and Utrecht also recorded victories.
Feyenoord retained their five-point lead at the top of the Eredivisie with a resounding 4-0 win over NEC Nijmegen.
PSV Eindhoven scored two late goals to secure a thrilling 4-3 victory over Heerenveen in the Eredivisie on Sunday.
What happened to Martin Odegaard? The Real Madrid prodigy is hoping to fulfil his potential on loan.
PSV Eindhoven moved level on points with second-placed Ajax as they beat Excelsior 2-0 at Philips Stadion.
Heerenveen have confirmed the signing of Real Madrid teenager Martin Odegaard on an 18-month loan.
Fran Sol's double earned Willem II a 2-1 win at home to fourth-placed Heerenveen in the Eredivisie on Friday night.