Cristóbal CastilloCristóbal Alonso Castillo Espinaza is a Chilean professional footballer who plays as a midfielder for O'Higgins.Club careerBorn in Machalí, Castillo came to O'Higgins F.C. at the age of 10. He became the team captain of the under-13 level, winning the 2016 Youth Football National Championship. He made his professional debut in the 2021 Primera División match against Everton de Viña del Mar on 27 March. In 2025, he was loaned out to Deportes Santa Cruz.International careerCastillo represented Chile U20 at the friendly tournament Copa Rául Coloma Rivas, playing all the matches, and at three friendly matches against Paraguay U20 and Peru U20 on 2022. In September 2022, he made three appearances in the Costa Cálida Supercup. In the 2022 South American Games, he made three appearances. In 2023, he made three appearances in the South American U20 Championship.