Background
Siviero was born in Montevideo.
Siviero was born in Montevideo.
He played for clubs in Uruguay, Mexico and Chile and for the Uruguay national football team Racing Club de Montevideo 1969-1971 Cerro 1972 Rentistas 1973-1977 Atlético Potosino 1978 Deportivo Neza 1979 Sud América 1980 Cobreloa 1981-1984 San Marcos de Arica 1985 Cobreloa 1986 Cobreloa 1986-1988 Deportes Antofagasta 1990 Rangers 1990 Deportes Concepción 1991 Coquimbo Unido 1992 Santiago Wanderers 1994-1997 Everton 1999-2000 Santiago Wanderers 2001 Everton 2002 Unión Louisiana Calera 2004 Deportivo Italmaracaibo 2004-2005 Deportes Puerto Montt 2007.