Laws of the Game
2. Winning team
The team scoring the greater number of goals is the winner. If both teams score no goals or an equal number of goals, the match is drawn.
When competition rules require a winning team after a drawn match or home-and-away tie, the only permitted procedures to determine the winning team are:
away goals rule
two equal periods of extra time not exceeding 5 minutes each
kicks from the penalty mark
A combination of the above procedures may be used