Mario Oscar Gerosa (born 27 April 1967 in Rosario, Argentina) is an Argentine-born Italian former rugby union player, coach and a current sports director.
Gerosa first team was Club Atlético del Rosario, where he won the Nacional de Clubes in 1987.
He was called for the 1995 Rugby World Cup, playing two games and scoring a try in 31-25 win over Argentina, at 4 June 1995, in East London.
[1] He returned to Argentina, playing for Rosario, from 1998/99 to 2009/10, when he finished his player career, aged 43 years old.
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