Ajax moved within three points of Eredivisie leaders FC Twente with a 5-1 thrashing of nine-man Feyenoord.
• Saturday's round-up
Demy de Zeeuw scored a goal in each half while Feyenoord's Stefan Babovic and goalkeeper Rob van Dijk saw red to complete a miserable day for the visitors. Urby Emanuelson and Gregory Van Der Wiel also got on the scoresheet before Luis Suarez capped the win with a late penalty.
Heracles also enjoyed a home victory, coming from a goal down to beat Utrecht 3-1. Michael Silberbauer gave the visitors the lead after 14 minutes but Willy Overtoom (23) and Everton (31) ensured Heracles went into half-time in front. Darl Douglas then effectively settled the contest with a goal only two minutes into the second period.
RKC Waalwijk remain rooted to the bottom of the table after losing 1-0 at home to Willem II. Christophe Gregoire grabbed the only goal in the 63rd minute before the home side had Benjamin de Ceulaer sent off 13 minutes from time.
The day's other game saw Sparta Rotterdam beat NEC 2-0 at home thanks to a goal in each half from Erik Falkenburg. Midfielder Falkenburg struck just before half-time and then just before the hour for a victory which keeps Sparta in ninth place, comfortably above Willem II and level on points with eighth-placed NAC Breda.