Barcelona Atlètic was founded as the Barcelona's reserve team in 1970 with the merger of Condal (Barcelona's previous reserve team) and Atlètic Catalunya. Castilla was founded as Real Madrid's reserve team in 1972, after the folding of A.D. Plus Ultra (Real Madrid's previous reserve team). Both teams would meet for the first time during the third round of the 1974–75 Copa del Generalísimo and then again during the 1982–83 Segunda División season.
