The aggregate score is a used in football (soccer). It refers to the sum of two scorelines when the same two teams play each over two legs (most commonly in a knockout competition). It may also come into use in the league system if two teams are tied on points and goal difference in a critical situation (1st and 2nd or relegation positions). Federation Internationale de Football Association (FIFA) Asian Football Confederation (AFC) Confederation of African Football (CAF) Confederation of North, Central American and Caribbean Association Football (CONCACAF Union of European Football Associations (UEFA) South American Football Confederation (CONMEBOL) Oceania Football Confederation (OFC) The Current Laws of the Game (LOTG) The Rec. ...

For example, if two teams are playing each other in a two-legged match, and the first result is 1-1 and then 2-1, then the aggregate scoreline will be 3-2. It is used as a more fair way to resolve who is the strongest of the two teams by having them play at home and away. If the aggregate score is tied, then away goals may come into consideration. If away goals are equal, or are not considered, then extra time and possibly a penalty shootout will occur. The away goals rule is a method of breaking ties in football matches contested over two legs in which a winner must be determined. ... Extra time is an additional period played at the end some games of football (soccer) if the score is tied after the two standard periods (halves) of play. ... Kicks from the penalty mark (commonly referred to as a penalty shootout) are sometimes used to decide the winner of a tied match of association football (soccer). ...