Association football
Domestic competitions

The governing bodies in each country operate league systems in a domestic season, normally comprising several divisions, in which the teams gain points throughout the season depending on results. Teams are placed into tables, placing them in order according to points accrued. Most commonly, each team plays every other team in its league at home and away in each season, in a round-robin tournament. At the end of a season, the top team is declared the champion. The top few teams may be promoted to a higher division, and one or more of the teams finishing at the bottom are relegated to a lower division.

The teams finishing at the top of a country's league may also be eligible to play in international club competitions in the following season. The main exceptions to this system occur in some Latin American leagues, which divide football championships into two sections named Apertura and Clausura (Spanish for Opening and Closing), awarding a champion for each. Most countries supplement the league system with one or more "cup" competitions organised on a knock-out basis. These include the domestic cup, which may be open to all eligible teams in a country's league system—both professional and amateur—and is organised by the national federation.

Some countries' top divisions feature highly-paid star players; in smaller countries, lower divisions, and many women's clubs, players may be part-timers with a second job, or amateurs. The five top European leagues – Premier League (England), Bundesliga (Germany), La Liga (Spain), Serie A (Italy), and Ligue 1 (France) – attract most of the world's best players and, during the 2006–07 season, each of these leagues had a total wage cost in excess of € 600 million. These leagues also generated a combined €17.2 billion in revenue in the 2021–22 season from television contracts, matchday tickets, sponsorships, and other sources.
keywords:forbidden_words, oulipo:avoid_letter[e], detectable_content:postscript