He made his debut the 22, February, 1981 against Talleres. He won 4-2 and he scored 2 goals. Boca and Diego seemed made for each other. He became champion of the Metropolitan Tournament. Diego played 40 matches and scored 28 goals. He came back. He made his debut the 7 October, 1995 winning 1-0 against Colón. On the 25, that same month, he said good-bye with a victory.