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Piedra made his debut for Orión on 24 May 1936 against Herediano, immediately scoring two goals. He went on to win two league titles with them and also played for Sociedad Gimnástica Española, La Libertad (winning another title) and Cuban team Juventud Asturiana.
He was joint league top goalscorer in 1938 with 11 goals and totalled 124 Primera División matches.
As a manager, Piedra was in charge of teams like Orión, Saprissa (twice), Alajuelense (also twice), Cartaginés (5 times), Barrio México, Herediano, San Ramón, San Carlos, Puntarenas, Rohrmoser and in Mexico with Monarcas Morelia. He also managed the national team on three occasions, winning the 1963 CONCACAF Championship.
In total, Piedra was in charge at 356 Primera División matches and 49 times with the national team.
Achievements
As player
League title - Orión (1938, 1944) (top goalscorer in 1938)