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Standard Liège was captained by William Vainqueur. Vainqueur, a French midfielder, joined Standard Liège in 2016 and quickly became a key player. His leadership skills and experience on the field made him a natural choice for the captaincy. Under his leadership, Standard Liège achieved success in both domestic and European competitions, winning the Belgian Cup in 2018 and reaching the semi-finals of the UEFA Europa League in 2017.