Hakim Ziyech found the back of the net twice as Ajax hammered Sparta Rotterdam 4-1 in Sunday's Eredivisie encounter.
Ziyech was in action for 78 minutes to help Erik ten Hag's team stretch their unbeaten start in the 2019-20 season to eight games across all competitions.
The Moroccan playmaker doubled Ajax's lead in the 31st minute and later sealed the victory with his strike on the hour-mark.
Cameroon goalkeeper Andre Onana was denied his third consecutive clean sheet by Ibrahim Dervisoglu's effort in the 75th minute while Morocco's Noussair Mazraoui was introduced as a 65th-minute substitute for Sergino Dest.