Two late goals saw a profligate Feyenoord side slump to a 2-0 defeat at NAC Breda in the Eredivisie.
Feyenoord had the better share of the chances for much of the game and went close through Ron Vlaar more than once.
However, Robbert Schilder broke the deadlock for NAC six minutes from time and doubled his tally in added time when Feyenoord's Bruno Martins Indi was dismissed and the resulting free-kick was converted.
Andreas Granqvist's 85th-minute penalty was enough for FC Groningen to claim a deserved 1-0 home success against FC Utrecht.
The home side dominated for the majority of the match but had to rely on Granqvist's cool head from the spot to claim the points after Tim Matavz was fouled in the area by Michael Silberbauer.
The win means Pieter Huistra's side remain unbeaten and are just two points off joint leaders PSV Eindhoven and Ajax.
A late Hugo Bargas brace saw De Graafschap battle back from two goals down to secure a point from their match at ADO Den Haag.
Dmitri Bulykin had put the hosts ahead in the 11th minute and substitute Kevin Visser doubled their advantage with virtually his first touch in the 71st minute.
But Bargas pulled one back two minutes later and then notched again with a spectacular overhead kick two minutes from time to earn the visitors their fourth point of the season.