Gaston Edmundo Castro Makuc took charge of one match in the 1982 World Cup finals and a match in the 1984 Olympics.
In the group stage match in the 1984 Olympic Games Italy - Egypt, Castro showed 11 yellow cards and four reds. The Egyptians must have behaved themselves badly because they received 9 bookings and three players were sent off. The Italian player (Nela) got sent off with a direct red.
Gaston Castro has been a FIFA referee between 1977 and 1993.