Mario Domínguez Carriles (born 23 January 2009) is a Spanish footballer who plays as a forward for Real Valladolid Promesas.
Career Born in Gijón, Asturias but raised in Ponferrada, Castile and León, Domínguez joined Real Valladolid's youth sides in 2023, from SD Ponferradina. In September 2025, aged 16, he started to train with the first team under manager Guillermo Almada.
Domínguez made his senior debut with the reserves on 12 October 2025, coming on as late substitute in a 4–1 Segunda Federación home routing of CD Lealtad. He made his first team debut on 14 November, replacing Julien Ponceau late into a 1–0 Segunda División home loss to UD Las Palmas; aged 16 years and nearly ten months, he became the second-youngest player to debut for the club, only behind Luis Miguel Gail's debut in 1977.
Personal life Domínguez's father, known as Fran, was also a footballer. A midfielder, he played in the second division with Recreativo de Huelva, Gimnàstic de Tarragona and Ponferradina.
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