Adolfo Alfredo Pedernera, born in Avellaneda, Argentina, was a football (soccer) player and coach. He was involved with several teams such as Club Atlético Huracán, Club Atlético River Plate (known as "La Máquina" or "The Machine"), Club Atlético Atlanta, and Millonarios (known as "El Ballet Azul" or "The Blue Dance"). He was affectionately known as "El Maestro" ("The Master") for much of his career. Wikipedia
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