By James Pearson
Last Updated: 01/01/70 1:00am
Ivar van Dinteren stunned the visitors with a 18th minute opener before Dominggus Lim-Duan clinched the points with a second after the break.
ADO Den Haag remain above the drop zone despite a 3-1 home defeat to RKC Waalwijk.
Goals from Jason Oost and Robert Fuchs put the visitors in control before ADO responded.
The home side pulled one back with 10 minutes remaining from the penalty spot through Jan Paul Saeijs, however Bernardo Vasconcelos sealed the win with a third for RKC.
Heerenveen emphatically defeated Utrecht at the Abe Lenstra Stadium with a thumping 4-0 victory.
Former Sheffield Wednesday marksman Gerald Sibon was the hero - netting a hat-trick in the comfortable win.
Jesper Hakansson also got his name on the scoreboard in what proved a stroll in the park for Heerenveen.
Elsewhere, Volendam remain in the relegation places after Tom Caluwe's 88th minute goal handed Willem II a 1-0 win at the Veronica Stadion.
Click below for match summaries:Click below for match summaries:
ADO Den Haag 1-3 RKC
FC Volendam 0-1 Willem II
FC Zwolle 2-0 AZ
Heerenveen 4-0 FC Utrecht
Click here for the latest Eredivisie table.