Born in Leon, Guanejuato, Mexico, Velazquez's family moved to El Monte, California when he was ten.
did not have a soccer team at the time Velazquez attended but was scouted by UCLA while he played with the Valley Germans semi pro club when he was 17.
On January 15, 1975, the San Antonio Thunder picked Velasquez in first round (second overall) of the North American Soccer League draft.
Six days later, the Los Angeles Aztecs traded Luis Marotte, Pedro Martinez, Renato Costa, Julio Cesar Cortez, Ricardo de Rienzo, Mario Zanotti and Blas Sanchez to the San Antonio Thunder in exchange for Velasquez and the Thunder's 1976 and 1977 first round draft picks.
[2] Velazquez spent two seasons with the Aztecs before being traded to the Seattle Sounders in exchange for Paul Gizzi on February 2, 1977.