When the club managed to win the championship and secure a spot for the 1980 Copa Libertadores, defeating its arch-rival Colo-Colo in both tournaments
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When the club managed to win the championship and secure a spot for the 1980 Copa Libertadores, defeating its arch-rival Colo-Colo in both tournaments
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-23 from Wikipedia. The archived copy is preserved so this citation survives link rot.