UNAM defeated Nacional 6–5 on aggregate to win their first Copa Interamericana title.
In the second half, Nacional fought back and found an equaliser from Víctor Espárrago, scored in the 57th minute.
Ricardo Ferretti then restored UNAM's lead, to make the score 2–1 in the 60th minute.
However, the game was to end at 3–1 after Gustavo Vargas with three minutes to go scored for UNAM, forcing a play-off.
The play-off leg finally went ahead after a month with Los Angeles as the neutral site.