The original request was rejected although the AFA gave its approval short time later, therefore Eureka became a member of the Association.

In 1916, Eureka lost the semi-final v. San Telmo to achieve a place in División Intermedia, the second division by those times.

The final game ended 1–1 so a rematch was scheduled at Racing Club stadium, with Eureka winning 2–1.

[3] Eureka debuted in Primera División in 1919, where the squad finished 4th of 19 teams, although the championship was definitely suspended with only 10 rounds played.

Eureka's jersey was green and white in vertical stripes, until the club shortly wore the blue colors of Sportivo Palermo.