The Copa Interamericana is played on a home-and-away two-legged basis, with the Copa Libertadores champions hosting the second leg. If tied on aggregate, the away goals rule would not be used, and a play-off match would be played. If still tied after the play-off match, the penalty shoot-out would be used to determine the winners.[4]
In the 5th minute, Hugo Sánchez opened the scoring for UNAM. 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. Hugo Sánchez got his second goal of the match in the 85th minute.[1]
The game was goalless until the 70th minute mark, when Wilmar Cabrera put Nacional ahead, in the 77th José Cabrera scored to make it 2–0, then Wilmar Cabrera in the 81st minute scored his second of the match to make it 3–0. 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. Nacional opened the scoring at the 17th minute from José Cabrera. Ricardo Ferretti equalised at the 69th minute. In the 89th minute, Gustavo Vargas scored the winning goal for UNAM.
^ a b"Copa Interamericana 1980: Pumas Unam Campeón". Fútbol en América. 3 April 2015. Archived from the original on 23 May 2020. Retrieved 18 May 2022.
^Gustavo Vargas: "El título más importante que ha ganado Pumas" by Karla Uzeta on Record, 13 May 2020
^Los Pumas ante el gran objetivo[dead link] on Fifa.com, 5 Apr 2005
^Ricardo Ferretti ya fue campeón continental con Pumas (in Spanish), AS, 5 August 2015, retrieved 5 August 2015