AZ Alkmaar had to overcame blustery conditions to beat Willem II 2-0 to reclaim third place in the Eredivisie on Saturday.
Luuk De Jong scored a hat-trick as PSV strengthened their grip at the top of the Eredivisie after a 4-2 victory at AZ.
A calamitous error by Go Ahead Eagles goalkeeper Mickey van der Hart gave parent club Ajax a 2-1 win.
AZ Alkmaar inflicted a second league defeat in four days upon Ajax as they registered a 1-0 win at the Amsterdam ArenA.
Ajax lost 1-0 at Vitesse Arnhem on Sunday to fall further behind PSV in the Eredivisie title race.
Eredivisie leaders PSV Eindhoven made it six wins in a row as they beat Cambuur 2-1 on Saturday evening.