Police arrested 30 supporters before and after the football match between Amsterdam’s Ajax and Feyenoord of Rotterdam on Sunday. Ajax won 2-0 in front of its home crowd.
The mayors of both cities had warned before the kick-off that the police would come down hard on trouble-makers.
Elsewhere this weekend, premier league leaders AZ of Alkmaar drew 2-2 against the number four, PSV Eindhoven.
FC Twente maintained its three points lead over Ajax and remians in second place with a 2-1 win over Volendam.
For the full results and standings, click here