Marcelo Omar Garrafo Biano (born September 5, 1957) is a retired field hockey

Field hockey

Field Hockey, or Hockey, is a team sport in which a team of players attempts to score goals by hitting, pushing or flicking a ball into an opposing team's goal using sticks...

 player from Argentina

Argentina

Argentina , officially the Argentine Republic , is the second largest country in South America by land area, after Brazil. It is constituted as a federation of 23 provinces and an autonomous city, Buenos Aires...

, who competed in three Summer Olympics for his native country.

At his Olympic debut in 1976 he ended up in 11th place with the national squad

Argentina national field hockey team

The Argentina national field hockey team represents Argentina in the international field hockey competitions. The team competed in every World Cup since the first edition in 1971, except for the 1998 edition which was held in Utrecht, The Netherlands....

, followed by the 8th place in 1988. Four years later, at the 1992 Summer Olympics

1992 Summer Olympics

The 1992 Summer Olympic Games, officially known as the Games of the XXV Olympiad, were an international multi-sport event celebrated in Barcelona, Catalonia, Spain, in 1992. The International Olympic Committee voted in 1986 to separate the Summer and Winter Games, which had been held in the same...

 in Barcelona, Spain, Garraffo was the oldest member (34 years, 323 days) of the Argentinian hockey delegation, and had the honour of carrying the flag at the opening ceremony. As a coach he guided the men's national team to the silver medal at the 1999 Pan American Games

1999 Pan American Games

The 1999 Pan American Games, officially the XIII Pan American Games or the 13th Pan American Games, was a major international multi-sport event that was held from July 23-August 8, 1999 in Winnipeg, Manitoba, Canada. Approximately 5,000 athletes from 42 nations participated at the games. The 1999...

.