José María Martínez Muguerza

José María Martínez Muguerza (born 13 November 1942) was a Spanish footballer who played as a defender for Real Sociedad between 1962 and 1976. A historical member of Sociedad, he played his entire 14-year career there, thus being a member of the so-called one-club men group.

Career Born in the Gipuzkoan town of Pasajes on 13 November 1942, Martínez began his career in the youth teams of Pasajes, Touring de Errenteria, from which he joined Real Sociedad Sanse (the B team), then in Tercera División, with whom he scored a total of 2 goals in 54 official matches between 1962 and 1964. Having played two Copa del Rey matches with the first team in the 1963–64 season, he established himself as an undisputed starter in the following season, making his debut for Real Sociedad on 3 May 1964, in a Segunda División fixture against Levante.

On 23 April 1967, Martínez was the captain of the so-called Los héroes de Puertollano ("the heroes of Puertollano"), the town where Sociedad, which included Alberto Ormaetxea, Rafael Mendiluce, and Dionisio Urreisti, secured the long-awaited promotion by drawing against Calvo Sotelo on the final matchday, thus winning the 1966–67 Segunda División. He later stated that this event marked "the beginning of the current Real Sociedad", and recalled that when they returned to Gipuzkoa, they "had no choice but to stop in every town because they set up roadblocks, as everyone wanted to greet us". Martínez was named the best Gipuzkoan sportsman in 1973. The following year, they knocked out Grasshopper, but then loss to the eventual champions Liverpool.

Later life In 1976, Martínez, along with fellow Sociedad player Patxi Gorriti, founded Gorriti Martínez, a company dedicated to the installation of PVC and aluminum windows. He was also astute in hunting matters. After his retirement, Martínez joined the club's board of directors,

Martínez became a regular attendee of the annual dinner hosted by "the heroes of Puertollano", stating that "there's always someone who drops out", either because they are "away or traveling", but "those of us who get together always have a great time, and it is a pleasure to remember every year what we achieved in '67".

Honours Real Sociedad Segunda División: Champions (1): 1966–67