Rubén Óscar Valdez

Valdez began his playing career in 1967 with Almirante Brown of the Argentine 2nd division. In 1969, he joined Club Atlético Platense of the Primera División where he played 54 games and scored 12 goals in his time at the club. In the 1970–71 season, he signed for Valencia C.F. of Spain, he won the Spanish league championship with the club in his first season. He played for the club until 1978 making 195 appearances and scoring 51 goals all competitions. Between 1977 and 1978 he played alongside fellow Argentine striker Mario Kempes. In 1979 Valdez left Valencia to play for CD Castellón but before the end of the year he had returned to Argentina to join Kimberley where he made five appearances, including a famous 2–1 victory against River Plate on 9 September 1979. before his retirement at the end of the year.

Valdez was first selected to play for Spain in 1972. He made his debut in a 2–0 home win against Uruguay on 23 May 1972, in which he scored one of the goals. His final international appearance came on 13 February 1974 in a 1–0 defeat to Yugoslavia in Frankfurt in a qualification game for the 1974 FIFA World Cup.

Valdez was born in Buenos Aires, Argentina on 25 June 1946. He died from complications of Alzheimer's disease in Valencia, Spain on 16 February 2025, at the age of 78.

Platense have a filial club in Spain which has adopted the name Peña Calamar Óscar Valdez in his honour.