Unlike most other competitions around the world , the Copa Libertadores historically did not use extra time , an additional period of play specified under the rules of a sport to bring a game to a decision and avoid declaring the match a tie or draw , or away goals , a method of breaking ties in football and other sports when teams play each other twice , once at each team 's home ground , to decide a tie that was level on aggregate .
Unlike European club competitions , the Copa Libertadores , in the past , did not use extra time or away goals to decide a tie .