He played with Tigre for two seasons, until 1937 when he joined Ferro Carril Oeste, where he formed a powerful group of forwards along with Bernardo Gandulla, Raúl Emeal, Juan J. Maril and Luis Brognia.

Sarlanga's elegant playing style soon caught the attention of fans and media, also remarking his skills as playmaker.

With the addition of Ferro's former partners Emeal and Gandulla, Boca would dispute the first places with Club Atlético River Plate's La Máquina during the 1940s.

Sarlanga was part of the attacking line along with Mario Boyé, Pío Corcuera, Severino Varela and Sánchez.

In the last match against Ferro, Sarlanga scored 2 goals, giving Boca Juniors the victory that allowed the team to crown champion of the season.