By James Pearson
Last Updated: 01/01/70 1:00am
The Dutch giants uncharacteristically entered the match in poor form, however a Steve Olfers own goal changed that.
The RKC stopper put the ball past his own keeper just before the break for what proved the decisive goal.
AZ Alkmaar cemented their third place spot following a late 3-2 win at ADO Den Haag despite trailing late on.
Roy Streove's 11th minute strike was cancelled out by Barry van Galen (pictured), however Romeo Castelen restored their advantage.
Just when it looked like ADO would take the points late goals from Peter Wijker and Martijn Meerdink completed a remarkable turnaround.
Late goals from Romano Denneboom and Anour Hadouir lifted Willem II to a 2-0 victory over Groningen.
Roda remain in contention for a European place following a 1-1 home draw with Zwolle after Iwan Redan netted on his debut.
Roda's new signing Redan, on loan from RKC Waalwijk, opened the scoring only for Ivar van Dinteren to level matters 12 minutes later.
RBC Roosendaal came from a goal behind to snatch a 2-1 away victory over NEC Nijmegen.
Mike Zonnveld put the home side ahead just before the break, however that was as good as it got for NEC.
Two goals in the space of four minutes after the interval from Robert Molenaar and Bjorn Daelemans secured the points for the visitors.
Click here for the latest Eredivisie table.