Captain Teun Koopmeiners scored a penalty and free-kick to bring his total for the season to 11. Owen Wijndal scored his first goal for the Alkmaarders, while a late strike by substitute Ferdy Druijf completed a scoreline that reflected AZ’s dominance.
Ajax got back to winning ways after three straight defeats in the league and cup, but it took nearly an hour for Dusan Tadic to put the champions ahead in Heerenveen. Further strikes by Tadic and Quinsy Promes within six minutes banished Ajax’s jitters, while the Frisians’ only reward for their efforts was a well-taken goal by Mitchell van Bergen.
Feyenoord stayed in touch with the leaders by beating Willem II 2-0 in De Kuip. The match was decided in the first half by a neat finish from Jens Toornstra and a Steven Berghuis penalty.