 Ablanedo was born in Mieres, Asturias.During his career he played solely for Sporting de Gijón after being a product of the club's famed youth system, "Mareo", and received his first-team debut on 2 January 1983, as a second-half substitute in a 1–0 home win against RCD Español after José Aurelio Rivero was sent off.After two further appearances in the following season, Ablanedo became the Asturian side's undisputed starter, totalling 399 La Liga appearances.