| Intro | Argentine footballer |
| Is |
Athlete Football player Association football player Boxer |
| From |
Puerto Rico Argentina |
| Type | Sports |
| Gender | male |
| Birth | 25 July 1975, Buenos Aires |
| Age: | 45 years |
Leonardo Óscar Mas (born July 25, 1975 in Buenos Aires, Argentina) is a retired Argentine footballer.
He came through the youth system of Argentinos Juniors until 1993 when he made his professional debut. Mas has played most of his career in Argentina. He did play six months in Ecuador. In 2005 he made the move to Chilean club Huachipato, where he played very well. Because of his good form, in 2008 one of Chile’s biggest club, Universidad de Chile, signed Mas.