January 30, 1948
On February 5, 1969, in Mérida, Yucatán, he lost by technical knockout in three rounds to Raúl Hernández.
won the world title
On January 8, 1975, in Miyagi, Japan, he beat Japanese Shoji Oguma on points and obtained the WBC flyweight title.
Lost His Title
On September 9, 1979, in Seoul, South Korea, with local Chan-Hee Park, who defeated him by decision
On July 24, 1982, in Mérida, Rodolfo Ortega knocked him out in nine rounds.
He was world champion for four years, he made 15 successful defenses of the title, due to his great quality within those tied up he was baptized as"El Maestro".