Despite the win, Klaassen felt Ajax had not played their best. "I think all of us were trying to do something with the ball. Whenever Fortuna Sittard came forward, they were immediately dangerous. It was as if we had no energy, but we just weren't focused on the job in hand."
Ajax – Fortuna Sittard 5-2 (2-1)
7. Cox 0-1
32. Klaassen 1-1
45. Klaassen 2-1
74. Brobbey 3-1
85. Tadic 4-1 (strafschop)
90+5. Promes 5-1 (strafschop)
90+6. Cox 5-2
Ajax: Onana, Mazraoui (64. Klaiber), Schuurs, Blind, Martínez, Klaassen, Gravenberch (78. Álvarez), Ekkelenkamp (46. Promes), Antony (66. Tadic), Traoré (65. Brobbey), Neres