In 1943, Barcelona faced rivals Real Madrid in the semi-finals of Copa del Generalísimo (now the Copa del Rey). The first match at Les Corts was won by Barcelona 3–0. Real Madrid comfortably won the second leg, beating Barcelona 11–1. According to football writer Sid Lowe, "There have been relatively few mentions of the game [since] and it is not a result that has been particularly celebrated in Madrid. Indeed, the 11–1 occupies a far more prominent place in Barcelona's history." It has been alleged by local journalist Paco Aguilar that Barcelona's players were threatened by police in the changing room, though nothing was ever proven.

What team won the first match in the 1943 Copa del Generalissimo?