Ryan Gravenberch benefited from an error by Union Saint-Gilloise to score his first goal in a 2-0 Europa League win.
West Ham continued their continental cruise as headers from Lucas Paqueta and Nayef Aguerd secured a 2-1 win at Freiburg.
Brighton gave themselves a Europa League lifeline as Joao Pedro's late penalty completed a comeback from two goals down away to Marseille.
Ghana midfielder Mohammed Kudus was delighted with West Ham's winning start to their Europa League campaign.
Roberto De Zerbi congratulated his Brighton players in the dressing room for their performance despite losing 3-2 to AEK Athens on their European debut.
West Ham made heavy weather of the opening match of their latest European adventure as they beat Serbian minnows Backa Topola 3-1.