Ghana's Mohammed Kudus was again missing in the Eredivisie on Sunday but new Ivorian signing Sebastien Haller made his presence count one more time as Ajax registered a 1-0 home win over Feyenoord.
With three points in the matchday 17 fixture at Johan Cruijff Stadium, Ajax consolidated their position at the top of the table, leaving Feyenoord fourth on the standings.
After missing Ajax's league encounter with FC Twente on Thursday on precautionary grounds and the suggestion of a prompt recall by coach Erik ten Hag, the Ghanaian midfielder was expected back in action for Sunday's De Klassieker.