Gimnasia also won its matches against three of the most important European clubs : a 3-1 victory against Real Madrid ( at Madrid , on January 1 , 1931 ) , 2-1 against FC Barcelona ( at Barcelona , on January 6 , 1931 ) , and 1-0 against Benfica ( at Lisbon , on March 29 , 1931 ) . Gimnasia also won its matches against three of the most important European clubs : a 3-2 victory against Real Madrid ( at Madrid , on January 1 , 1931 , first South American team to ever defeat Real Madrid at Madrid ) , 2-1 against FC Barcelona ( at Barcelona , on January 6 , 1931 ) , and 1-0 against Benfica ( at Lisbon , on March 29 , 1931 ) .