||This biographical article needs additional citations for verification. (January 2014)|
|Date of birth||February 7, 1948|
|Place of birth||Port of Spain, Trinidad and Tobago|
|Height||5 ft 9 in (1.75 m)|
|1967–1968||New York Generals||15||(3)|
|1977–1978||San Jose Earthquakes||30||(6)|
|1979||Detroit Lightning (indoor)||1||(0)|
|1979-1983||Phoenix Inferno (indoor)||122||(73)|
|Trinidad and Tobago|
* Senior club appearances and goals counted for the domestic league only.
DeLeon graduated from Saint Benedict's College. In 1967, he signed with the New York Generals of the National Professional Soccer League. In 1968, the NPSL merged with the United Soccer Association to form the North American Soccer League. DeLeon and the Generals spent the 1969 season in the NASL. In 1970, DeLeon moved to the Washington Darts. He was a 1970 First Team All Star. Following the 1971 season, the Darts moved to Miami, Florida and became the Miami Gatos. DeLeon did not play in the NASL in 1972. In May 1974, Miami (now renamed the Toros) traded DeLeon to the Washington Diplomats for cash and the Diplomats 1974 first round draft choice. In April 1977, the Diplomats traded DeLeon to the San Jose Earthquakes in exchange for Mark Liveric. He finished his NASL career in 1979 with the Seattle Sounders. In the fall of 1979, DeLeon moved to the Detroit Lightning of the Major Indoor Soccer League. The Lightning traded him to the Phoenix Inferno where he retired after three seasons.
In 2008, he was inducted into the Trinidad and Tobago Sports Hall of Fame.