|Full name||Javier Escalza Ellakuria|
|Date of birth||10 December 1952|
|Place of birth||Arrankudiaga, Spain|
|Date of death||16 November 2007(aged 54)|
|Place of death||Getxo, Spain|
|Height||1.77 m (5 ft 10 in)|
|* Senior club appearances and goals counted for the domestic league only|
Born in Arrankudiaga, Biscay, Escalza began playing with amateurs CD Villosa, returning to organized football only two years later with Barakaldo CF in Segunda División. In the following summer, aged 21, he joined Basque giants Athletic Bilbao, making his La Liga debut on 27 April 1974 in a 0–1 away loss against UD Las Palmas, his only appearance of the season.
From there onwards, Escalza became an undisputed starter for the Lions: in the 1976–77 campaign he played 51 official games as the team finished in third position in the league and reached the UEFA Cup final, losing on the away goals rule to Juventus FC.
Escalza left Athletic in June 1980, having appeared in 207 matches all competitions comprised (one goal in the Copa del Rey). He subsequently joined fellow top level side RCD Español, being first-choice over the course of three seasons, and finished his career at the age of nearly 36 after one year with CE Sabadell FC and three with Sestao Sport Club (two seasons in Segunda División B, another two in the second level).
- "Los cachorros son casi leones" [The pups are almost lions] (PDF) (in Spanish). Mundo Deportivo. 23 May 1975. Retrieved 7 December 2015.
- Fallece Javier Escalza, ex defensa internacional (Javier Escalza, former international defender, dies); Marca, 16 November 2007 (in Spanish)