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Atlético Madrid was the club where Lucas Hernandez began his professional football career. Born in Marseille, France, Hernandez joined the youth academy of Atlético Madrid in 2007 at the age of 11. He progressed through the ranks, making his senior debut in 2014. Hernandez spent four seasons with Atlético Madrid, winning the UEFA Europa League in 2018 before moving to Bayern Munich in 2019.