Association football

====Tie-breaking====
{{Main|Determining the Outcome of a Match (association football)}}
[[File:Didier Drogba Manuel Neuer last penalty kick Champions League Final 2012.jpg|alt=|thumb|Most knockout competitions use a [[Penalty shoot-out (football)|penalty shoot-out]] to decide the winner if a match ends as a draw]]
In league competitions, games may end in a draw. In knockout competitions where a winner is required, various methods may be employed to break such a deadlock; some competitions may invoke [[Replay (sports)|replays]].<ref>For example, in the [[FA Cup]] prior to the semi-finals.</ref> A game tied at the end of regulation time may go into extra time, which consists of two further 15-minute periods. If the score is still tied after extra time, some competitions allow the use of [[penalty shoot-out (football)|penalty shoot-outs]] (known officially in the Laws of the Game as "kicks from the penalty mark") to determine which team will progress to the next stage of the tournament or be the champion. Goals scored during extra time periods count towards the final score of the game, but kicks from the penalty mark are only used to decide the team that progresses to the next part of the tournament, with goals scored in a penalty shoot-out not making up part of the final score.<ref name="laws51-52">{{cite book |title=Laws of the Game 2010/2011 |publisher=FIFA |pages=51–52 |chapter=Procedures to determine the winner of a match or home-and-away |access-date=4 March 2011 |chapter-url=https://www.fifa.com/mm/document/affederation/generic/81/42/36/lawsofthegame_2010_11_e.pdf |archive-url=https://web.archive.org/web/20110313194624/https://www.fifa.com/mm/document/affederation/generic/81/42/36/lawsofthegame_2010_11_e.pdf |archive-date=Mar 13, 2011 |url-status=dead}}</ref>

In competitions using [[two-legged match]]es, each team competes at home once, with an aggregate score from the two matches deciding which team progresses. Where aggregates are equal, the [[away goals rule]] may be used to determine the winners, in which case the winner is the team that scored the most goals in the leg they played away from home. If the result is still equal, extra time and potentially a penalty shoot-out are required.<ref name="laws51-52"/>