In 431 games coached, Díaz-Miguel guided the Spain National Team to six Summer Olympic Games tournaments, including a silver medal at the 1984 Summer Olympic Games, in Los Angeles. That was the top classification for the Spain National Team until the 2008 Summer Olympics, when they finished second again. Díaz-Miguel's Spain National teams also participated in 13 EuroBaskets and four FIBA World Cups, and his team's best finishes were two silver medals (EuroBasket 1973, EuroBasket 1983), and one bronze medal (EuroBasket 1991) in the EuroBasket. He also won a silver medal at the 1987 Mediterranean Games.