 Two years later, he moved to the Spanish club Valencia Basket.Sastre was a member of the junior national teams of Spain.With Spain's junior national teams, he played at the 2009 FIBA Europe Under-18 Championship, the 2010 FIBA Europe Under-20 Championship, where he won a bronze medal, and he also won a gold medal at the 2011 FIBA Europe Under-20 Championship, which was held in Bilbao, while playing with the Spanish under-20 national team.