[1] By the age of 18 he was making his debut in the Spanish first division with San Sebastián's team, Real Sociedad (his position was midfielder; his brother José María also played, as a goalkeeper).
[2] But his career in sports ended in 1959, when he moved to Madrid to set up his own film production company.
[1] He produced Mr. Saura's La Prima Angélica (1973) and Cría Cuervos (1975), which won special jury prizes at the 1973 and 1975 at the special prize of the jury at the Cannes Film Festival, and Mama Turns 100 (1979), which was nominated for the Academy Award for Best Foreign Language Film at the 52nd Academy Awards.
"Mama Turns 100" was a sequel to Mr. Saura's Ana and the Wolves (1973), which Mr. Querejeta also produced.
[3] Querejeta gave wings to the careers of directors such as Carlos Saura, Jaime Chávarri, Emilio Martínez Lázaro, Fernando León de Aranoa, Víctor Erice and his own daughter, Gracia Querejeta.