Gorostiza was a member of an Athletic attack (coached by Englishman Fred Pentland) that also included Bata, José Iraragorri, Chirri II, Lafuente and Víctor Unamuno, and would be remembered as one of the best in the club's history; he won two Pichichi awards as league top goalscorer while with the club. He scored the last goal in the 1933 Spanish Cup final, a 2–1 victory over Real Madrid in Barcelona.
Gorostiza was a member of an Athletic attack (coached by Englishman Fred Pentland) that also included Bata José Iraragorri Chirri II Lafuente and Víctor Unamuno and would be remembered as one of the best in the club's history; he won two Pichichi awards as league top goalscorer while with the club He scored the last goal in the 1933 Spanish Cup final a 2–1 victory over Real Madrid in Barcelona