Ajax edged three points ahead of PSV Eindhoven in the Eredivisie title race with a hard-fought 1-0 win at FC Groningen.
PSV Eindhoven's Eredivisie title chances were dealt a blow as they had to settle for a 3-3 draw away at 10-man Vitesse.
Nicolas Tagliafico scored a calamitous own goal to add some excitement to an otherwise run-of-the-mill victory for Ajax against Eredivisie bottom club Emmen.
David Neres scored a second-half double as Ajax moved back to the top of the Eredivisie - for a day at least - with a 5-2 win at Emmen.
Fortuna Sittard pulled four points clear of the relegation zone with a comfortable 3-1 win over fellow strugglers FC Emmen.
Robin van Persie scored a hat-trick as Feyenoord won 4-0 at home against FC Emmen in the Eredivisie on Sunday.