Letran College won the La Liga Catolica (The Catholic League) in the early 1920s. When Letran joined the NCAA (Philippines) in 1928, the Squires promptly won the junior's championship in their first season and went on to establish the then NCAA (Philippines) record of three consecutive junior's championships. Letran College withdrew, however, in 1932, after a dispute over an ineligible player in the track and field athletics league. Letran College later rejoined the league in 1936. Two years later, the Knights won their first senior basketball title under coach Jacinto Ciria Cruz and team captain Felicismo Fajardo. The other members of the victorious 1938 quintet were Angel de Leon, who later coached the 1950 Letran team that won the NCAA title, Guillermo Salvador, Feliciano Manlulu, Carlos Camillas, Jose Pacheco, Honesto Baltazar, Francisco Nepomuceno, Victorio Salazar, German Monzon and Guillermo Mendoza.