The away goals rule is a method of breaking ties in association
football and other sports when teams play each other twice, once at
each team's home ground. By the away goals rule, the team that has
scored more goals "away from home" will win if scores are otherwise
tied. This is sometimes expressed by saying that away goals (or at
least one of them) "count double" in the event of a tie. The
away-goals rule is most often invoked in two-legged fixtures, where
the initial result is determined by the aggregate score - i.e. the
scores of both games are added together. In many competitions, the
away goals rule is the first tie-breaker for such cases, with a
penalty shootout as the second tie-breaker if each team has scored
the same number of away goals. Rules vary as to whether the away
goals rule applies at the end of normal time of the second leg, or
after extra time.