Erik ten Hag's Ajax edged closer to securing the Eredivisie title with a 3-0 victory at home to PEC Zwolle, with Davy Klaassen scoring twice.
Ten Hag, who will take charge of Manchester United at the conclusion of the campaign, is looking to sign off in style at Ajax.
His side are now seven points clear of their closest challengers PSV, who have a game in hand.
Dusan Tadic put Ajax in front on the half hour mark with a fantastic effort.