[3] After spending the first months on loan to CD Iruña, he made his La Liga debut on 10 January 1960 in a 2–1 away loss against Real Oviedo, and eventually started in all of his appearances as the season ended in relegation.

[4] In the summer of 1962, Zoco signed for powerhouse Real Madrid, playing only 13 matches in his first year, which ended with league conquest, but becoming a starter from there onwards.

In 1965–66, apart from appearing in every minute in the domestic competition, he added nine complete games in that campaign's European Cup, including the final against FK Partizan (2–1 win).

[5] Apart from those two accolades, Zoco won a further six national championships and two Copa del Rey trophies with Real Madrid, totalling 64 appearances in European competition with the Merengues (six goals scored).

[5] He retired in June 1974 at the age of 35 and, 20 years later, was appointed the club's match delegate in replacement of Miguel Ángel González,[6] retaining the position until 1998.