Zarraonandía signed his first professional contract with the S. D. Erandio of the Second Division, and was incorporated into the 1937–38 season.
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Signing with Athletic after playing one season for Erandio, he became a prolific goalscorer for Athletic in his 15 seasons at the club, winning The Pichichi Trophy for highest scorer in the league on six occasions.
Erandio |
The battle of Luchana took place in the district belonging to the parish of Deusto and the municipality of Desierto-Erandio, on the banks of the Asúa River, which empties into the Nervión at the spot known as Luchana.